Various implementations include a combustion engine piston, including a skirt in a counter-part and including a first contact area of the piston in the counter-part, a head which extends transverse to a central axis, and a ring carrier which comprises at least two lands and at least two grooves for receiving the rings, including a first land adjoining the head and a second land situated between the first land and the skirt, wherein the lands include at least one contact land having a diameter greater than a minimum diameter of the skirt to form a second contact area of the piston in the counter-part, and wherein at least one contact land comprises a friction-reducing surface coating, formed at least on a radial sector covering an angle of at least 30 degrees, and up to on a single sector covering an angle of 360 degrees.
The present invention concerns a method for preparing a metal powder for an additive manufacturing process involving the near-infrared laser beam sweeping of a powder bed, characterized in that the method comprises: an initial step of selecting a powder having an optical reflectivity of more than 70% for a wavelength in a range between 800 and 1500 nm; then a step of treating said powder, which is different from a grafting of particles and which induces physical and/or chemical surface modification of the particles (4) of said powder so as to reduce its optical reflectivity at the given wavelength. The invention also concerns the use of such a powder, of which the particles (4) after treatment have a median particle size d50 of between 5 and 50 µm.
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p. ex. par frittage ou fusion laser sélectif
B33Y 70/00 - Matériaux spécialement adaptés à la fabrication additive
The present invention relates to a member (1) for guiding a mobile element (2) in oscillation or rotation. The member (1) has a body (10), consisting of a hardened metallic material, provided with a bore (12) for mounting the mobile elements (2), comprising cavities (20) that are distributed discontinuously in the bore (12) and that are able to serve as grease reserves (30), and comprising possible means (26) for supplying grease (30). In the bore (12) there are defined a contact surface (14) outside the cavities (20) and the supply means (26), and a non-contact surface (16) in the cavities (20) and the supply means (26). The bore (12) comprises at least one region (40) with: cavities (20) having a depth (P20) of between 2 and 5 mm, and a quantity of grease (30) in the cavities (20) per contact surface (14) of between 0.05 and 0.3 g/cm². The invention also relates to a mechanical system comprising such a member (1), and to a method for producing such a member (1).
F16C 17/24 - Paliers à contact lisse pour mouvement de rotation exclusivement caractérisés par des particularités sans rapport avec la direction de la charge avec dispositifs affectés par des conditions anormales ou indésirables, p. ex. pour empêcher un surchauffement, pour la sécurité
F16C 33/10 - Structures relatives à la lubrification
4.
GUIDING MEMBER, MECHANICAL SYSTEM COMPRISING SUCH A GUIDING MEMBER, AND METHOD FOR PRODUCING SUCH A GUIDING MEMBER
The present invention relates to a guiding member (10), comprising a body (12) provided with a bore (14) for mounting a mobile element, the body (12) consisting of a metal material, characterized in that the bore (14) has a surface layer (16) that has undergone an anti-seizing treatment over a diffusion depth (P16) of less than or equal to 0.6 mm, the surface layer (16) having a hardness of greater than or equal to 500 Hv1 over a depth (P18) of between 5 and 50 µm.
F16C 17/24 - Paliers à contact lisse pour mouvement de rotation exclusivement caractérisés par des particularités sans rapport avec la direction de la charge avec dispositifs affectés par des conditions anormales ou indésirables, p. ex. pour empêcher un surchauffement, pour la sécurité
F16C 33/10 - Structures relatives à la lubrification
5.
Guiding member in the form of a metal ring for assembly with friction and with the articulating and/or sliding capability of a shaft
a) suitable to act as a grease reserve, such that after wearing of the layer of self-lubricating coating at the friction surface of the bore, the difference in wettability between the said friction surface and the workings still having the coating, enables the grease to be drawn out of the said workings in order to lubricate the said friction surface.
A metal foil including on at least one of its sides a layer of a material including: a metal or a metal alloy, carbon, hydrogen, and optionally oxygen, the atomic percentage of the metal or of the metals of the alloy in the material ranging from 10 to 60%, the atomic percentage of carbon in the material ranging from 35 to 70%, the atomic percentage of hydrogen in the material ranging from 2 to 20%, and the atomic percentage of oxygen if present in the material being less than or equal to 10%. The metal foil can be used in the manufacture of a cathode of a lithium-ion electrochemical cell. The deposition of this layer reduces the internal resistance of the cell.
H01M 4/90 - Emploi de matériau catalytique spécifié
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
The present invention relates to a mechanical system (1), comprising a bearing (4) and a shaft (10) coupled to the bearing (4), especially for an internal combustion engine, being subjected to average contact pressures of less than 200 MPa. The shaft (10) has at least one area (12) provided with an anti-seizing surface coating (20), having a surface hardness at least twice that of the bearing (4), and a microtexturation (30) comprised of a set of individual microcavities (31), distributed in said area (12). The invention also relates to a method for manufacturing such a mechanical system (1).
The present invention concerns a friction piece (10) suitable for operating in a lubricated medium at a temperature higher than 200° C. The piece (10) comprises a metal surface (12) and an external coating (14) composed of tungsten carbide doped with nitrogen WC(N) with an atomic ratio of nitrogen between 5 and 12%. The invention also relates to a mechanical system (1) comprising such a piece (10). The invention also relates to a method for implementing such a piece (10).
F16N 17/02 - Lubrification des machines ou des appareils travaillant dans des conditions très sévères à haute température
F16N 1/00 - Modifications structurales des éléments de machines ou d'appareils pour la lubrification
C23C 14/00 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
F16J 15/16 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre
C10M 135/00 - Compositions lubrifiantes caractérisées en ce que l'additif est un composé organique non macromoléculaire contenant du soufre, du sélénium ou du tellure
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c.-à-d. non caractérisé par le procédé de revêtement
The present invention relates to a hinged component (1) with one degree of freedom, comprising at least two concentric rings (10, 20), rotatable with respect to one another about a central axis, defining a friction interface (40) therebetween, and including: an outer ring (10) having an inner friction surface (12), and an inner ring (20) having an outer friction surface (22) and an inner friction surface (24) provided so as to receive a movable element guided by the component (1) to rotate, oscillate and/or translate.
F16C 17/18 - Paliers à contact lisse pour mouvement de rotation exclusivement caractérisés par des particularités sans rapport avec la direction de la charge avec coussinets ou bagues flottants, tournant à vitesse réduite
The present application relates to a part comprising a metal substrate, a non-hydrogenated amorphous ta-C or a-C carbon coating that coats the substrate, and an undercoat which is based on chromium (Cr), carbon (C) and silicon (Si) and is disposed between the metal substrate and the amorphous carbon coating and to which the amorphous carbon coating is applied, characterized in that the undercoat comprises, at its interface with the amorphous carbon coating, a ratio of silicon in atomic percent to chromium in atomic percent (Si/Cr) of 0.35 to 0.60, and a ratio of carbon in atomic percent to silicon in atomic percent (C/Si) of 2.5 to 3.5.
C23C 28/04 - Revêtements uniquement de matériaux inorganiques non métalliques
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
C23C 14/32 - Évaporation sous vide par explosionÉvaporation sous vide par évaporation suivie d'une ionisation des vapeurs
C23C 14/35 - Pulvérisation cathodique par application d'un champ magnétique, p. ex. pulvérisation au moyen d'un magnétron
C23C 16/50 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD] caractérisé par le procédé de revêtement au moyen de décharges électriques
11.
PART COATED WITH A NON-HYDROGENATED AMORPHOUS CARBON COATING ON AN UNDERCOAT COMPRISING CHROMIUM, CARBON AND SILICON
The present application relates to a part comprising a metal substrate, a non-hydrogenated amorphous ta-C or a-C carbon coating that coats the substrate, and an undercoat which is based on chromium (Cr), carbon (C) and silicon (Si) and is disposed between the metal substrate and the amorphous carbon coating and to which the amorphous carbon coating is applied, characterized in that the undercoat comprises, at its interface with the amorphous carbon coating, a ratio of silicon in atomic percent to chromium in atomic percent (Si/Cr) of 0.3 to 0.60, and a ratio of carbon in atomic percent to silicon in atomic percent (C/Si) of 2.5 to 3.5.
C23C 28/04 - Revêtements uniquement de matériaux inorganiques non métalliques
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
C23C 14/32 - Évaporation sous vide par explosionÉvaporation sous vide par évaporation suivie d'une ionisation des vapeurs
C23C 14/35 - Pulvérisation cathodique par application d'un champ magnétique, p. ex. pulvérisation au moyen d'un magnétron
C23C 16/50 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD] caractérisé par le procédé de revêtement au moyen de décharges électriques
12.
Multimaterial powder with composite grains for additive synthesis
Some embodiments are directed to a multimaterial powder used in the field of metallurgy and plasturgy. The multimaterial powder includes support particles having a median particle size distribution between 1 μm and 100 μm and functionalising particles having a median particle size distribution that is a factor of 10 to 1000 lower relative to the support particles. The powder is characterised in that the support particles and the functionalising particles form composite grains having a core-shell structure that each have a core formed by a support particle, and a shell, that covers between 10 and 100% of the surface of the support particle and which is formed by at least one surface layer of the functionalising particles.
C09D 11/037 - Encres d’imprimerie caractérisées par des particularités autres que la nature chimique du liant caractérisées par le pigment
B01J 13/02 - Fabrication de microcapsules ou de microbilles
B33Y 70/00 - Matériaux spécialement adaptés à la fabrication additive
B22F 1/00 - Poudres métalliquesTraitement des poudres métalliques, p. ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
C09D 11/102 - Encres d’imprimerie à base de résines artificielles contenant des composés macromoléculaires obtenus par des réactions autres que celles faisant intervenir uniquement des liaisons non saturées carbone-carbone
B22F 9/04 - Fabrication des poudres métalliques ou de leurs suspensionsAppareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau solide, p. ex. par broyage, meulage ou écrasement à la meule
13.
System and method for producing an optical mask for surface microtexturing, and surface microtexturing plant and method
Centre National De La Recherche Scientifique (CNRS) (France)
Inventeur(s)
Bichotte, Maxime
Jourlin, Yves
Dubost, Laurent
Abrégé
The invention relates to a system (2) for producing an optical mask (35) for surface microtexturing, said system (2) comprising: a substrate (10) having a surface (11) that is to be textured; a layer of material (20) which covers the surface (11) of the substrate (10) and has an outer surface (21) that is exposed to the outside environment; and a generating and depositing device for generating and depositing droplets (30) on the outer surface (21) of the layer of material (20), in a specific arrangement (31) under condensation, forming the optical mask (35) on the outer surface (21) of the layer of material (20). The invention also relates to a treatment plant comprising a system (2) of said type. The invention further relates to a method for producing a mask as well as to a surface microtexturing method.
Centre National De La Recherche Scientifique (CNRS) (France)
Inventeur(s)
Bichotte, Maxime
Jourlin, Yves
Dubost, Laurent
Abrégé
The invention relates to a system (2) for producing an optical mask (35) for surface treatment, in particular surface microtexturing, said system (2) comprising: a layer of material (20) which has an outer surface (21) that is exposed to the outside environment; and a generating and depositing device for generating and depositing droplets (30) on the outer surface (21) of the layer of material (20) in which a specific arrangement (31), forming the optical mask (35) on the outer surface (21) of the layer of material (20). The invention also relates to a treatment plant comprising a system (2) of said type. The invention further relates to a method for producing a mask as well as to a method for surface treatment.
The present invention relates to a shaft (10) designed to be coupled to a bearing (4), notably within a mechanical system (1) with which a combustion engine is equipped, being subjected to average contact pressures of less than 200 MPa. The shaft (10) has at least one region (12) provided with an anti-seizing surface coating (20) that has a surface hardness at least twice that of the shaft (10), and microtexturing (30) made up of a set of separate microcavities (31) that are distributed in said region (12). The invention also relates to a method for manufacturing such a shaft (10), and to a mechanical system (1) comprising such a shaft (10).
The present invention relates to a mechanical system (1), comprising a bearing (4) and a shaft (10) coupled to the bearing (4), especially for an internal combustion engine, being subjected to average contact pressures of less than 200 MPa. The shaft (10) has at least one area (12) provided with an anti-seizing surface coating (20), having a surface hardness at least twice that of the bearing (4), and a microtexturation (30) comprised of a set of individual microcavities (31), distributed in said area (12). The invention also relates to a method for manufacturing such a mechanical system (1).
The present invention relates to a mechanical system (1), comprising a bearing (4) and a shaft (10) coupled to the bearing (4), especially for an internal combustion engine, being subjected to average contact pressures of less than 200 MPa. The shaft (10) has at least one area (12) provided with an anti-seizing surface coating (20), having a surface hardness at least twice that of the bearing (4), and a microtexturation (30) comprised of a set of individual microcavities (31), distributed in said area (12). The invention also relates to a method for manufacturing such a mechanical system (1).
The invention mainly relates to a mechanical device (9) for transmitting movement for a combustion engine, comprising: - a connecting rod (10) comprising a connecting rod big end (13) intended to cooperate with a crank pin of a crankshaft and a connecting rod small end (12) having an internal bore (18); - a piston (16) comprising a pin hole (22); and - a piston pin (15) inserted into said pin hole (22) of said piston (16) and into said internal bore (18) of the connecting rod small end (12) in order to provide a rotary link between said connecting rod (10) and said piston (16), characterised in that the piston pin (15) is covered with a surface coating (14a) with a low friction coefficient and the pin hole (22) of said piston (16) or an insert interposed between said piston pin (15) and said pin hole (22) is covered with a layer of a surface coating (14b) with a low friction coefficient.
The present invention concerns a combustion engine piston (1), comprising: a skirt (2) for guiding the piston (1) in translation along a central axis (X1) in a counter-part (C) and consisting of a first contact area (Z2) of the piston (1) in the counter-part (C), a head (3) which extends transverse to the central axis (X1) and is intended to be arranged in contact with the combustion gases, and a ring carrier (4) which comprises at least two lands (11, 12, 13) and at least two grooves (14, 15, 16) intended for receiving the rings, including a first land (11) adjoining the head (3) and a second land (12) situated between the first land (11) and the skirt (2), characterised in that the lands (11, 12, 13) include at least one contact land (12) having a diameter (D12) greater than a minimum diameter (D2) of the skirt (2) in order to form a second contact area (Z4) of the piston (1) in the counter-part, and in that at least one contact land (12) comprises a friction-reducing surface coating (20), formed at least on a radial sector covering an angle of at least 30 degrees, and up to on a single sector covering an angle of 360 degrees.
Heat engine piston, comprising a skirt, a head and a ring carrier that comprises at least two cords and at least two lands and at least two ring grooves intended for receiving segments, including a first land adjoining the head and a second land located between the first land and the skirt, in which at least one of the at least two lands is a contact land, having a diameter greater than a minimum diameter of the skirt to constitute a second support zone of the piston in a counterpart; comprises a friction-reducing surface coating, forms at least on one radial area covering an angle of at least 30 degrees, and up to a single area covering an angle of 360 degrees, the diameter of said land being considered without the surface coating, and the minimum diameter of the skirt being considered without a bore in the skirt.
Some embodiments are directed to the manufacture of functional composites (electrical conductors, thermal conductors, etc.) produced from coated powders.
H01B 1/02 - Conducteurs ou corps conducteurs caractérisés par les matériaux conducteurs utilisésEmploi de matériaux spécifiés comme conducteurs composés principalement de métaux ou d'alliages
H01B 1/08 - Conducteurs ou corps conducteurs caractérisés par les matériaux conducteurs utilisésEmploi de matériaux spécifiés comme conducteurs composés principalement d'autres substances non métalliques oxydes
H01B 1/12 - Conducteurs ou corps conducteurs caractérisés par les matériaux conducteurs utilisésEmploi de matériaux spécifiés comme conducteurs composés principalement d'autres substances non métalliques substances organiques
H01B 1/24 - Matériau conducteur dispersé dans un matériau organique non conducteur le matériau conducteur comportant des compositions à base de carbone-silicium, du carbone ou du silicium
22.
Powder paint thermosetting binder composition and manufacturing method
Some embodiments relate to a powder paint thermosetting binder composition that is solvent-free and includes at least one hardener and one cross-linking catalyst, and a first epoxy resin or a functionalized resin having at least one epoxy group. The resin has an epoxy equivalent weight of between 250 and 800 g/eq and a glass transition temperature of between 35 and 80° C. A binder composition of this kind has a polymerization starting temperature of 80° C. and a gel time of between 35 s and 140 s at 180° C. Some embodiments also relate to a paint composition containing a thermosetting binder composition of this kind, at least one pigment and, optionally, in addition a leveling agent and inorganic or organic fillers.
The present invention concerns a friction piece (10) suitable for operating in a lubricated medium at a temperature higher than 200°C. The piece (10) comprises a metal surface (12) and an external coating (14) composed of tungsten carbide doped with nitrogen WC(N) with an atomic ratio of nitrogen between between 5 and 12%. The invention also relates to a mechanical system (1) comprising such a piece (10). The invention also relates to a method for implementing such a piece (10).
F16N 1/00 - Modifications structurales des éléments de machines ou d'appareils pour la lubrification
F16N 17/02 - Lubrification des machines ou des appareils travaillant dans des conditions très sévères à haute température
C23C 14/00 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
F16J 15/16 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre
C10M 135/00 - Compositions lubrifiantes caractérisées en ce que l'additif est un composé organique non macromoléculaire contenant du soufre, du sélénium ou du tellure
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c.-à-d. non caractérisé par le procédé de revêtement
The present invention concerns a friction piece (10) suitable for operating in a lubricated medium at a temperature higher than 200°C. The piece (10) comprises a metal surface (12) and an external coating (14) composed of tungsten carbide doped with nitrogen WC(N) with an atomic ratio of nitrogen between between 5 and 12%. The invention also relates to a mechanical system (1) comprising such a piece (10). The invention also relates to a method for implementing such a piece (10).
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c.-à-d. non caractérisé par le procédé de revêtement
F16C 33/12 - Composition structuraleEmploi de matériaux spécifiés ou de traitement particulier des surfaces, p. ex. contre la rouille
F16J 1/01 - PistonsPistons à fourreauPlongeurs caractérisés par l'emploi de matériaux particuliers
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
F16J 10/04 - Surfaces de contactChemises de cylindres
F16N 1/00 - Modifications structurales des éléments de machines ou d'appareils pour la lubrification
25.
MULTIMATERIAL POWDER WITH COMPOSITE GRAINS FOR ADDITIVE SYNTHESIS
The present invention relates to a multimaterial powder comprising support particles having a median particle size distribution d50 between 1 µm and 100 µm and functionalizing particles having a median particle size distribution d50 that is a factor of 10 to 1000 lower relative to the support particles. According to the invention, the support particles and the functionalizing particles form composite grains having a core-shell structure that each have a core formed by a support particle, and a shell that covers between 10% and 100% of the surface of the support particle and is formed by at least one surface layer of functionalizing particles. The present invention also relates to a process for producing such a powder.
The present invention relates to a multimaterial powder comprising support particles having a median particle size distribution d50 between 1 µm and 100 µm and functionalizing particles having a median particle size distribution d50 that is a factor of 10 to 1000 lower relative to the support particles. According to the invention, the support particles and the functionalizing particles form composite grains having a core-shell structure that each have a core formed by a support particle, and a shell that covers between 10% and 100% of the surface of the support particle and is formed by at least one surface layer of functionalizing particles. The present invention also relates to a process for producing such a powder.
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) (France)
Inventeur(s)
Bichotte, Maxime
Jourlin, Yves
Dubost, Laurent
Abrégé
The invention relates to a system (2) for producing an optical mask (35) for surface treatment, in particular surface microtexturing, said system (2) comprising: a layer of material (20) which has an outer surface (21) that is exposed to the outside environment; and a device for creating and depositing droplets (30) on the outer surface (21) of the layer of material (20) in a specific pattern (31) such that the optical mask (35) is formed on the outer surface (21) of the layer of material (20). The invention also relates to a treatment plant comprising a system (2) of said type. The invention further relates to a method for producing a mask as well as to a surface treatment method.
G03F 1/00 - Originaux pour la production par voie photomécanique de surfaces texturées, p. ex. masques, photomasques ou réticulesMasques vierges ou pellicules à cet effetRéceptacles spécialement adaptés à ces originauxLeur préparation
G03F 1/68 - Procédés de préparation non couverts par les groupes
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) (France)
Inventeur(s)
Bichotte, Maxime
Jourlin, Yves
Dubost, Laurent
Abrégé
The invention relates to a system (2) for producing an optical mask (35) for surface microtexturing, said system (2) comprising: a substrate (10) having a surface (11) that is to be textured; a layer of material (20) which covers the surface (11) of the substrate (10) and has an outer surface (21) that is exposed to the outside environment; and a device for creating and depositing droplets (30) on the outer surface (21) of the layer of material (20) in a specific pattern (31) under the effect of condensation such that the optical mask (35) is formed on the outer surface (21) of the layer of material (20). The invention also relates to a treatment plant comprising a system (2) of said type. The invention further relates to a method for producing a mask as well as to a surface microtexturing method.
G03F 1/00 - Originaux pour la production par voie photomécanique de surfaces texturées, p. ex. masques, photomasques ou réticulesMasques vierges ou pellicules à cet effetRéceptacles spécialement adaptés à ces originauxLeur préparation
G03F 1/68 - Procédés de préparation non couverts par les groupes
Disclosed is a method for surface treatment of a steel component, providing high resistance to wear and corrosion, including nitriding or nitrocarburising to form a compound layer with a thickness of at least 8 micrometers made up of iron nitrides having phases ε and/or γ′, oxidizing to generate a layer of oxides with a thickness of 0.1-3 micrometers, and soaking in an impregnation bath during at least 5 minutes at room temperature, the bath being made up of at least 70 wt %, ±1%, of a solvent made up of a mixture of hydrocarbons formed by a C9 to C17 alkane fraction, 10 to 30 wt %, ±1%, of at least one paraffin oil formed by a C16 to C32 alkane fraction, and at least one additive such as a synthetic phenolic additive with a concentration of 0.01 to 3 wt %, ±0.1%.
A cam treatment to reduce the friction coefficient thereof relative to a counterpart in an area provided with a hard coating made from amorphous Diamond-Like Carbon or DLC, involves disposing the cams on a support, bringing the support and the cams into a chamber placed under vacuum so as to clean the cams, bringing the support into relative movement along a trajectory of travel relative to a coating source, and taking the cams off the support before assembling them on a camshaft; the method involves disposing the cams on the support in a fixed configuration which is defined in such a way that the cams are brought successively opposite the source with orientations and at distances substantially identical relative to the source, to deposit a hard coating made from amorphous Diamond-Like Carbon or DLC, selectively on the fraction of the section of the cams that is oriented towards the source.
In a method of treating a nitrided/nitrocarburized workpiece, at least a portion of the workpiece is subjected to a first step in which at least one laser beam is moved in at least one pass over the portion, until the surface layer of the portion is transformed in part or in full, and until the distribution of the nitrogen concentration in the diffusion zone is modified. In a second step at least one laser beam is moved in at least one pass over said portion so as to enable the nitrogen concentration in the underlying diffusion layer to be reduced.
The present invention relates to the manufacture of functional composites (electrical conductors, thermal conductors, etc.) produced from coated powders.
The present invention relates to the manufacture of functional composites (electrical conductors, thermal conductors, etc.) produced from coated powders.
H01B 1/02 - Conducteurs ou corps conducteurs caractérisés par les matériaux conducteurs utilisésEmploi de matériaux spécifiés comme conducteurs composés principalement de métaux ou d'alliages
H01B 1/08 - Conducteurs ou corps conducteurs caractérisés par les matériaux conducteurs utilisésEmploi de matériaux spécifiés comme conducteurs composés principalement d'autres substances non métalliques oxydes
H01B 1/12 - Conducteurs ou corps conducteurs caractérisés par les matériaux conducteurs utilisésEmploi de matériaux spécifiés comme conducteurs composés principalement d'autres substances non métalliques substances organiques
C08J 7/06 - Revêtement par des compositions ne contenant pas de substances macromoléculaires
H01B 1/22 - Matériau conducteur dispersé dans un matériau organique non conducteur le matériau conducteur comportant des métaux ou des alliages
The present invention relates to a powder paint thermosetting binder composition that is solvent-free and includes at least one hardener and one cross-linking catalyst, and a first epoxy resin or a functionalized resin having at least one epoxy group. Said resin has an epoxy equivalent weight of between 250 and 800 g/eq and a glass transition temperature of between 35 and 80°C. A binder composition of this kind has a polymerization starting temperature of 80°C and a gel time of between 35 s and 140 s at 180°C. The present invention also relates to a paint composition containing a thermosetting binder composition of this kind, at least one pigment and, optionally, in addition a leveling agent and inorganic or organic fillers.
An inside surface of an internal combustion engine liner is treated to have a surface roughness Ra smaller than 0.06 μm, and then receives a DLC coating. A method of producing the internal combustion engine liner includes: forming the liner from a metal material, polishing an inside surface of the liner to obtain a polished inside surface of roughness Ra smaller than 0.06 μm, and applying the DLC coating to the polished inside surface.
C23C 16/50 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD] caractérisé par le procédé de revêtement au moyen de décharges électriques
36.
POWDER PAINT THERMOSETTING BINDER COMPOSITION AND MANUFACTURING METHOD
The present invention relates to a powder paint thermosetting binder composition that is solvent-free and includes at least one hardener and one cross-linking catalyst, and a first epoxy resin or a functionalized resin having at least one epoxy group. Said resin has an epoxy equivalent weight of between 250 and 800 g/eq and a glass transition temperature of between 35 and 80°C. A binder composition of this kind has a polymerization starting temperature of 80°C and a gel time of between 35 s and 140 s at 180°C. The present invention also relates to a paint composition containing a thermosetting binder composition of this kind, at least one pigment and, optionally, in addition a leveling agent and inorganic or organic fillers.
The piston pin has an anti-seize coating limited to an angular sector corresponding at least to a friction area submitted to a contact pressure along a preferential direction.
C23C 16/50 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD] caractérisé par le procédé de revêtement au moyen de décharges électriques
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
C23C 14/00 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement
The invention relates to a method for surface treatment of a steel component in order to grant same high resistance to wear and corrosion, including a step of nitriding or nitrocarburising suitable for forming a compound layer with a thickness of at least 8 micrometres made up of iron nitrides having phases e and/or ?', an oxidising step suitable for generating a layer of oxides with a thickness of 0.1 to 3 micrometres, and a step of impregnating by soaking in an impregnation bath during at least 5 minutes at room temperature, said bath being made up of at least 70 wt %, plus or minus 1%, of a solvent made up of a mixture of hydrocarbons formed by a C9 to C17 alkane fraction, 10 to 30 wt %, plus or minus 1%, of at least one paraffin oil formed by a C16 to C32 alkane fraction, and at least one additive such as a synthetic phenolic additive with a concentration of 0.01 to 3 wt %, plus or minus 0.1%.
The invention relates to a method for surface treatment of a steel component in order to grant same high resistance to wear and corrosion, including a step of nitriding or nitrocarburising suitable for forming a compound layer with a thickness of at least 8 micrometres made up of iron nitrides having phases ε and/or γ', an oxidising step suitable for generating a layer of oxides with a thickness of 0.1 to 3 micrometres, and a step of impregnating by soaking in an impregnation bath during at least 5 minutes at room temperature, said bath being made up of at least 70 wt %, plus or minus 1%, of a solvent made up of a mixture of hydrocarbons formed by a C9 to C17 alkane fraction, 10 to 30 wt %, plus or minus 1%, of at least one paraffin oil formed by a C16 to C32 alkane fraction, and at least one additive such as a synthetic phenolic additive with a concentration of 0.01 to 3 wt %, plus or minus 0.1%.
This assembly includes a ball joint assembled in a casing, and receiving an axle capable of sliding and/or rotating therein. The ball joint is formed from the winding of a fabric of small thickness ranging between 20 μm and 150 μm and mixed with a resin comprising fillers. The fabric has the form of strips having a width ranging between 5 mm and 200 mm; the strips being crossed in several layers.
A mechanical part provided with an amorphous carbon coating (with at least 70 wt. % of carbon not including hydrogen) and used to cooperate slidingly with an antagonistic part having a surface hardness which is a maximum of two thirds of that of the coating. The mechanical part is such that the coating has a roughness Ra which, measured by profilometry, is equal to a maximum of 0.050 microns and, measured by atomic force microscopy, a micro-roughness which is equal to a minimum of 0.004 microns and a maximum of 0.009 microns. This minimizes the wear of the less hard antagonistic part and that of the coating.
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
The element is formed from the winding of a fabric of small thickness ranging between 20 μm and 150 μm and mixed with a resin containing fillers. The fabric has the form of strips having a width ranging between 5 mm and 200 mm, with the strips being crossed in several layers.
The method involves subjecting at least a portion of the part to a first step that involves moving at least one laser beam in at least one pass over said portion, until partial or total transformation of the surface layer of the portion in question and modification of the concentration distribution of nitrogen in the diffusion area, and subjecting at least the portion treated by laser to transform the surface layer, to a second step that involves moving at least one laser beam in at least one pass over said portion in order to reduce the nitrogen concentration in the underlying diffusion layer.
The method involves subjecting at least a portion of the part to a first step that involves moving at least one laser beam in at least one pass over said portion, until partial or total transformation of the surface layer of the portion in question and modification of the concentration distribution of nitrogen in the diffusion area, and subjecting at least the portion treated by laser to transform the surface layer, to a second step that involves moving at least one laser beam in at least one pass over said portion in order to reduce the nitrogen concentration in the underlying diffusion layer.
The invention relates to a self-lubricating composite friction part (1) that can be subjected, during operation, to temperatures that are at least equal to 250°C. Said part comprises, along the friction surface (2), a single layer of a material consisting of weft and warp yarns made of polytetrafluoroethylene, said material being impregnated with a thermostable resin having a glass transition temperature that is at least equal to 250°C. It is applied to a reinforcing layer (3).
The invention relates to a self-lubricating composite friction part (1) that can be subjected, during operation, to temperatures that are at least equal to 250°C. Said part comprises, along the friction surface (2), a single layer of a material consisting of weft and warp yarns made of polytetrafluoroethylene, said material being impregnated with a thermostable resin having a glass transition temperature that is at least equal to 250°C. It is applied to a reinforcing layer (3).
In order to treat the cams of a camshaft for an internal combustion vehicle, so as to reduce the friction coefficient thereof relative to a counterpart in an area provided with a hard coating made from amorphous Diamond-Like Carbon or DLC, the method involves disposing the cams on a support, bringing the support and the cams into a chamber placed under vacuum so as to clean said cams, bringing said support into relative movement along a trajectory of travel relative to a coating source, and taking said cams off the support before assembling them on a camshaft; the method involves disposing the cams on the support in a fixed configuration which, together with the trajectory, is defined in such a way that said cams are brought successively opposite the source with orientations and at distances substantially identical relative to said source, so as to deposit a hard coating made from amorphous Diamond-Like Carbon or DLC, selectively on the fraction of the section of the cams that is oriented towards the source.
C23C 14/04 - Revêtement de parties déterminées de la surface, p. ex. au moyen de masques
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
The ring or the component have workings to supply grease to the friction area at given time intervals, with the bore of the ring having workings able to act as a grease reserve. The ring's bore has facilities suitable for putting the grease supply workings in communication with all the workings suitable to act as a grease reserve.
The bore of the ring has workings suitable to act as a grease reserve at a friction area. A self-lubricating coating layer with a low wettability is applied to the entire surface of the bore, including in the workings suitable to act as a grease reserve, such that after wearing of the layer of self-lubricating coating at the friction surface of the bore, the difference in wettability between the friction surface and the workings still having the coating layer, enables the grease to be drawn out of the workings in order to lubricate the friction area.
C10M 107/38 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un composé macromoléculaire contenant des halogènes
F16C 33/10 - Structures relatives à la lubrification
F16C 33/20 - Surface de glissement principalement constituée de matériaux plastiques
C10M 175/00 - Traitement des lubrifiants usés pour récupérer les produits utiles
F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
50.
METHOD AND DEVICE FOR GENERATING A PLASMA EXCITED BY MICROWAVE ENERGY IN THE ELECTRON CYCLOTRON RESONANCE (ECR) DOMAIN, IN ORDER TO CARRY OUT A SURFACE TREATMENT OR PRODUCE A COATING AROUND A FILIFORM ELEMENT
LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (LIST) (Luxembourg)
Inventeur(s)
Blandenet, Olivier
Lagarde, Thierry Léon
Choquet, Patrick
Duday, David
Abrégé
According to the method: the filiform element is continuously moved linearly through magnetic dipoles placed facing each other and around a tube forming a processing chamber; and the microwave energy is introduced between at least two magnetic dipoles.
The device includes at least two coaxial waveguides each formed of a central conductor and of an external conductor to bring microwaves into a treatment chamber. The at least two electromagnetic wave injection guides are combined with a magnetic circuit elongated in one direction. The magnetic circuit surrounding the waveguides by creating a magnetic field capable of achieving an ECR condition close to the waveguides.
The invention relates to a piston pin (1) which comprises an anti-seize coating (4) limited to an angular sector (S) corresponding at least to a friction area submitted to a contact pressure along a preferential direction.
C23C 14/00 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
F16J 1/16 - Liaison avec les organes d'entraînement avec les bielles, c.-à-d. liaisons articulées à pivotement avec les axes de pistonAxes de piston
53.
A PISTON PIN AND METHOD OF APPLYING AN ANTI-SEIZE COATING ON THE PIN
The invention relates to a piston pin (1) which comprises an anti-seize coating (4) limited to an angular sector (S) corresponding at least to a friction area submitted to a contact pressure along a preferential direction.
F16J 1/16 - Liaison avec les organes d'entraînement avec les bielles, c.-à-d. liaisons articulées à pivotement avec les axes de pistonAxes de piston
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
C23C 14/00 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement
54.
MECHANICAL PART COATED WITH A LAYER OF AMORPHOUS CARBON FOR SLIDING IN RELATION TO A LESS HARD COMPONENT
The invention relates to a mechanical part provided with an amorphous carbon coating (with at least 70 wt. % of carbon not including hydrogen) and used to cooperate slidingly with an antagonistic part having a surface hardness which is a maximum of two thirds of that of the coating. The mechanical part is such that said coating has a roughness Ra which, measured by profilometry, is equal to a maximum of 0.050 microns and, measured by atomic force microscopy, a micro-roughness which is equal to a minimum of 0.004 microns and a maximum of 0.009 microns. This minimises the wear of the less hard antagonistic part and that of the coating.
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
C23C 14/32 - Évaporation sous vide par explosionÉvaporation sous vide par évaporation suivie d'une ionisation des vapeurs
The lubricated environment incorporates a friction modifier, and a coating is applied to the part. The coating is chromium nitride and the friction modifier is MoDTC. The chromium nitride presents an NaCl-type crystallization and a microhardness of 1,800+/−200 HV.
F16C 33/10 - Structures relatives à la lubrification
C10M 171/00 - Compositions lubrifiantes caractérisées par des critères purement physiques, p. ex. contenant comme matériau de base, épaississant ou additif des ingrédients exclusivement caractérisés par des valeurs numériques particulières de leurs propriétés physiques, c.-à-d. contenant des ingrédients physiquement bien définis mais dont la nature chimique n'est pas précisée ou n'est que très vaguement indiquée
C10M 111/02 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un mélange d'au moins deux composés couverts par plus d'un des groupes principaux , chacun de ces composés étant un composé essentiel l'un d'eux, au moins, étant un composé organique non macromoléculaire
C10M 135/18 - ThioacidesThiocyanatesLeurs dérivés comportant une liaison double carbone-soufre du type thiocarbamique, c.-à-d. contenant les groupes
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c.-à-d. non caractérisé par le procédé de revêtement
C10M 105/72 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un composé organique non macromoléculaire contenant du soufre, du sélénium ou du tellure
56.
Method for cooling metal parts having undergone a nitriding/nitrocarburising treatment in a molten salt bath, unit for implementing said method and the treated metal parts
Before the end of the treatment of metal parts in a molten salt bath nitriding/nitrocarburizing station, a chamber, arranged so that the oxygen contained in the chamber can be discharged in order to create an inert atmosphere, is filled with a refrigerant in liquid form and with a strong capacity for volume expansion as it evaporates. All the parts treated are transferred into the chamber. The chamber is closed, and the parts are left in the chamber for a preset length of time to reach a temperature at which the salt congeals and forms a protective barrier. The parts are then removed and subjected to a rinsing operation.
The borehole of the ring has arrangements (1a) capable of serving as lubricant reserves in the friction area. A self-lubricating coating (3), with low wettability, is applied to the entire surface of said borehole, including in the arrangements (1a) capable of serving as lubricant reserves, so that after the layer of self-lubricating coating (3) has worn off the friction surface of the borehole, the difference in wettability between said friction surface and the arrangements that still have the coating, helps extract said lubricant from said arrangements in order to lubricate said friction surface.
The borehole of the ring has arrangements (1a) capable of serving as lubricant reserves in the friction area. A self-lubricating coating (3), with low wettability, is applied to the entire surface of said borehole, including in the arrangements (1a) capable of serving as lubricant reserves, so that after the layer of self-lubricating coating (3) has worn off the friction surface of the borehole, the difference in wettability between said friction surface and the arrangements that still have the coating, helps extract said lubricant from said arrangements in order to lubricate said friction surface.
Said ring (1) or said element (2) has fittings (3-4-5) for supplying the friction region with grease according to determined periods, the bore of the ring (1) being provided with fittings (1a) acting as grease stores. According to the invention, the bore of the ring has means (1b) for communication between the grease-supplying fittings (3-4-5) and all of the fittings (1a) that act as grease stores.
Said ring (1) or said element (2) has fittings (3-4-5) for supplying the friction region with grease according to determined periods, the bore of the ring (1) being provided with fittings (1a) acting as grease stores. According to the invention, the bore of the ring has means (1b) for communication between the grease-supplying fittings (3-4-5) and all of the fittings (1a) that act as grease stores.
This assembly comprising a ball (1) mounted in a cage (2), said ball (1) receiving, with the ability to slide and/or rotate, a pin (3). This ball is made from a winding of a thin fabric between 20 µm and 150 µm thick and mixed with a resin comprising fillers, said fabric being in the form of strips between 5 mm and 200 mm wide, said bands being crossed in several layers.
This assembly comprising a ball (1) mounted in a cage (2), said ball (1) receiving, with the ability to slide and/or rotate, a pin (3). This ball is made from a winding of a thin fabric between 20 µm and 150 µm thick and mixed with a resin comprising fillers, said fabric being in the form of strips between 5 mm and 200 mm wide, said bands being crossed in several layers.
This element is produced from a winding of a thin fabric of a thickness comprised between 20 µm and 150 µm and mixed with a resin containing fillers, said fabric being in the form of strips of widths comprised between 5 mm and 200 mm, said strips criss-crossing in several layers.
This element is produced from a winding of a thin fabric of a thickness comprised between 20 µm and 150 µm and mixed with a resin containing fillers, said fabric being in the form of strips of widths comprised between 5 mm and 200 mm, said strips criss-crossing in several layers.
A part has a layer with a WC-C composition gradient, with the exception of a metal-containing undercoat and with the exception of an ion implantation layer and a DLC surface layer having cohesive behavior in scratch tests.
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
The device comprises at least two coaxial wave guides (4), each consisting of a central conductor (1) and an external conductor (2) to supply microwaves to a treatment chamber, characterised in that at least the two electromagnetic wave injection guides (4) are combined with a magnetic circuit (21-22) extended in one direction, said magnetic circuit surrounding the wave guides (4), creating a magnetic field capable of creating an ECR condition near said wave guides.
The device comprises at least two coaxial wave guides (4), each consisting of a central conductor (1) and an external conductor (2) to supply microwaves to a treatment chamber, characterised in that at least the two electromagnetic wave injection guides (4) are combined with a magnetic circuit (21-22) extended in one direction, said magnetic circuit surrounding the wave guides (4), creating a magnetic field capable of creating an ECR condition near said wave guides.
A molten-salt bath for nitriding mechanical steel parts, essentially consisting of the following (the contents being expressed in wt %): 25 to 60 wt % of alkali-metal chlorides; 10 to 40 wt % of alkali-metal carbonates; 20 to 50 wt % of alkali-metal cyanates; and a maximum of 3 wt % of cyanide ions (formed during the use of the bath), wherein the total of the contents is 100 wt %. Preferably, the bath contains: 25 to 30 wt % of sodium cyanate; 25 to 30 wt % of sodium carbonate and lithium carbonate; 40 to 50 wt % of potassium chlorides; and a maximum of 3 wt % of cyanide ions (formed during the use of the bath), the total of the contents being 100 wt %.
The invention relates to an internal combustion engine jacket, the inside of which is treated so as to be totally smooth and is provided with a DLC type coating.
C23C 16/00 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD]
The invention relates to an internal combustion engine jacket, the inside of which is treated so as to be totally smooth and is provided with a DLC type coating.
C23C 16/00 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD]
The lubricated medium comprises a friction modifier. A coating is applied to the part. According to the invention, the coating is chromium nitride and the friction modifier is MoDTC. Chromium nitride is selected to have NaCl type crystallisation with a microhardness of 1800 +/- 200 HV.
C10M 135/18 - ThioacidesThiocyanatesLeurs dérivés comportant une liaison double carbone-soufre du type thiocarbamique, c.-à-d. contenant les groupes
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
C23C 14/35 - Pulvérisation cathodique par application d'un champ magnétique, p. ex. pulvérisation au moyen d'un magnétron
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c.-à-d. non caractérisé par le procédé de revêtement
F16C 33/12 - Composition structuraleEmploi de matériaux spécifiés ou de traitement particulier des surfaces, p. ex. contre la rouille
F16H 55/06 - Emploi de matériauxEmploi de traitements d'organes dentés ou de vis sans fin pour modifier les propriétés intrinsèques des matériaux
F16N 15/00 - Lubrification avec des substances autres que l'huile ou la graisseLubrification caractérisée par l'utilisation de lubrifiants particuliers dans des appareils particuliers ou dans des conditions particulières
The lubricated medium comprises a friction modifier. A coating is applied to the part. According to the invention, the coating is chromium nitride and the friction modifier is MoDTC. Chromium nitride is selected to have NaCl type crystallisation with a microhardness of 1800 +/- 200 HV.
C10M 135/18 - ThioacidesThiocyanatesLeurs dérivés comportant une liaison double carbone-soufre du type thiocarbamique, c.-à-d. contenant les groupes
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c.-à-d. non caractérisé par le procédé de revêtement
F16N 15/00 - Lubrification avec des substances autres que l'huile ou la graisseLubrification caractérisée par l'utilisation de lubrifiants particuliers dans des appareils particuliers ou dans des conditions particulières
F16N 1/00 - Modifications structurales des éléments de machines ou d'appareils pour la lubrification
73.
Self-lubricating bushing for a joint, which is intended to be mounted on a shaft
This bush is made out of a composite material that has a modulus of elasticity of between 500 and 6000 N/mm2, said bush having at least one lip formed directly at the time of manufacture as an overrun edge of its bore to act as a leak-tight or protective barrier after mounting on the shaft by creating a tightening effect between the inside diameter of said lip or said lips, and the outside diameter of said shaft.
F16C 33/74 - Dispositifs d'étanchéité pour paliers à contact lisse
F16C 33/20 - Surface de glissement principalement constituée de matériaux plastiques
74.
METHOD FOR COOLING METAL PARTS HAVING UNDERGONE A NITRIDING/NITROCARBURISING TREATMENT IN A MOLTEN SALT BATH, UNIT FOR IMPLEMENTING SAID METHOD AND THE TREATED METAL PARTS
According to the method: prior to the end of the treatment, an enclosure (1) is filled with a liquid cooling agent having a high capacity for volume expansion upon vaporisation, said enclosure being arranged to discharge the oxygen contained therein in order to create an inert atmosphere; all of the treated parts are transferred to the enclosure (1); the enclosure (1) is closed; the parts are left in the enclosure for a pre-determined period of time in order to reach a temperature at which the salt freezes and creates a protective barrier; and the parts are removed and subjected to a rinsing operation.
METHOD FOR COOLING METAL PARTS HAVING UNDERGONE A NITRIDING/NITROCARBURISING TREATMENT IN A MOLTEN SALT BATH, UNIT FOR IMPLEMENTING SAID METHOD AND THE TREATED METAL PARTS
According to the method: prior to the end of the treatment, an enclosure (1) is filled with a liquid cooling agent having a high capacity for volume expansion upon vaporisation, said enclosure being arranged to discharge the oxygen contained therein in order to create an inert atmosphere; all of the treated parts are transferred to the enclosure (1); the enclosure (1) is closed; the parts are left in the enclosure for a pre-determined period of time in order to reach a temperature at which the salt freezes and creates a protective barrier; and the parts are removed and subjected to a rinsing operation.
The invention relates to a part having a layer with a WC-C composition gradient, with the exception of a metal sub-layer and with the exception of an ion implantation layer and a surface layer of DLC, wherein said part is characterised by having cohesive behaviour in a scratch test.
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
77.
PART HAVING A DLC COATING AND METHOD FOR APPLYING THE DLC COATING
The invention relates to a part having a layer with a WC-C composition gradient, with the exception of a metal sub-layer and with the exception of an ion implantation layer and a surface layer of DLC, wherein said part is characterised by having cohesive behaviour in a scratch test.
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
C23C 28/04 - Revêtements uniquement de matériaux inorganiques non métalliques
78.
MOLTEN-SALT BATH FOR NITRIDING MECHANICAL STEEL PARTS, AND IMPLEMENTATION METHOD
The invention relates to a molten-salt bath for nitriding mechanical steel parts, essentially consisting of the following (the contents being expressed in wt %): 25 to 60 wt % of alkali-metal chlorides; 10 to 40 wt % of alkali-metal carbonates; 20 to 50 wt % of alkali-metal cyanates; and a maximum of 3 wt % of cyanide ions (formed during the use of the bath), wherein the total of the contents is 100 wt %. Preferably, the bath contains: 25 to 30 wt % of sodium cyanate; 25 to 30 wt % of sodium carbonate and lithium carbonate; 40 to 50 wt % of potassium chlorides; and a maximum of 3 wt % of cyanide ions (formed during the use of the bath), the total of the contents being 100 wt %.
The invention relates to a molten-salt bath for nitriding mechanical steel parts, essentially consisting of the following (the contents being expressed in wt %): 25 to 60 wt % of alkali-metal chlorides; 10 to 40 wt % of alkali-metal carbonates; 20 to 50 wt % of alkali-metal cyanates; and a maximum of 3 wt % of cyanide ions (formed during the use of the bath), wherein the total of the contents is 100 wt %. Preferably, the bath contains: 25 to 30 wt % of sodium cyanate; 25 to 30 wt % of sodium carbonate and lithium carbonate; 40 to 50 wt % of potassium chlorides; and a maximum of 3 wt % of cyanide ions (formed during the use of the bath), the total of the contents being 100 wt %.
A method for processing parts for kitchen tools in order to protect the parts from scratches, includes sequentially: a nitridation step, optionally including a nitrocarburizing step, between 592 and 750° C. in order to promote the formation of a nitrogen austenite layer; and a processing step for promoting the conversion of at least a portion of the nitrogen austenite into a phase with reinforced hardness.
C21D 1/74 - Procédés de traitement en gaz neutre, en atmosphère contrôlée, sous vide ou dans des matières pulvérulentes
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 9/18 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour couteaux, faux, ciseaux ou autres outils à couper à main similaires
C23C 8/36 - Diffusion à l'état solide uniquement d'éléments non métalliques dans la couche superficielle de matériaux métalliquesTraitement chimique de surface par réaction entre le matériau métallique de la surface et un gaz réactif, laissant dans le revêtement des produits de la réaction, p. ex. revêtement de conversion, passivation des métaux au moyen de gaz au moyen de gaz ionisés, p. ex. nitruration ionique
C23C 8/56 - Carbo-nitruration de la couche superficielle de matériaux ferreux
C23C 8/76 - Carbo-nitruration de la couche superficielle de matériaux ferreux
This bushing is made of a composite material having an elastic modulus of between 500 and 6000 N/mm2, said bushing having at least one lip (1a) formed directly at the time of its manufacture to overhang its bore (1b) to act as a sealing or protective barrier once it has been mounted on the shaft (2), thereby creating a clamping effect between the inside diameter of said lip (1a) or said lips, and the outside diameter of said shaft (2).
This bushing is made of a composite material having an elastic modulus of between 500 and 6000 N/mm2, said bushing having at least one lip (1a) formed directly at the time of its manufacture to overhang its bore (1b) to act as a sealing or protective barrier once it has been mounted on the shaft (2), thereby creating a clamping effect between the inside diameter of said lip (1a) or said lips, and the outside diameter of said shaft (2).
A method for fabricating a heating a element includes modifying the surface state of a substrate in order to obtain at least one smooth area of low roughness and at least one rough area having a higher roughness; applying a highly electrically conductive material to these various areas; and connecting smooth area(s) of the conductive material to an electrical power source.
A method of treating a surface of at least one part by individual sources of an electron cyclotron resonance plasma is characterized by subjecting the part(s) to at least one movement of revolution with regard to at least one fixed linear row of elementary sources. The linear row or rows of elementary sources are disposed parallel to the axis or axes of revolution of the part or parts.
C23C 16/50 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD] caractérisé par le procédé de revêtement au moyen de décharges électriques
H01J 37/32 - Tubes à décharge en atmosphère gazeuse
C23C 16/458 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD] caractérisé par le procédé de revêtement caractérisé par le procédé utilisé pour supporter les substrats dans la chambre de réaction
C23C 16/511 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD] caractérisé par le procédé de revêtement au moyen de décharges électriques utilisant des décharges à micro-ondes
The invention relates to a method for processing parts for kitchen tools in order to protect said parts from scratches, characterised in that said method comprises sequentially: a nitridation step, optionally including a nitrocarburizing step, between 592 and 750°C in order to promote the formation of a nitrogen austenite layer; and a processing step for promoting the conversion of at least a portion of the nitrogen austenite into a phase with reinforced hardness.
C23C 8/26 - Nitruration de la couche superficielle de matériaux ferreux
C23C 8/32 - Carbo-nitruration de la couche superficielle de matériaux ferreux
C23C 8/36 - Diffusion à l'état solide uniquement d'éléments non métalliques dans la couche superficielle de matériaux métalliquesTraitement chimique de surface par réaction entre le matériau métallique de la surface et un gaz réactif, laissant dans le revêtement des produits de la réaction, p. ex. revêtement de conversion, passivation des métaux au moyen de gaz au moyen de gaz ionisés, p. ex. nitruration ionique
C23C 8/56 - Carbo-nitruration de la couche superficielle de matériaux ferreux
C23C 8/76 - Carbo-nitruration de la couche superficielle de matériaux ferreux
A47J 47/00 - Récipients, supports ou objets similaires pour la cuisine, non prévus dans les autres groupes de la présente sous-classePlanches à découper, p. ex. pour le pain
C21D 9/18 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour couteaux, faux, ciseaux ou autres outils à couper à main similaires
86.
Device for generating cold plasma in a vacuum chamber and use of said device for thermo-chemical processing
A device for generating a cold plasma in a vacuum enclosure includes a cathode body having hollow chambers for confining the plasma. Magnets are placed around each hollow chamber for creating a magnetic field forcing electrons to rotate about the field lines. The cathode body cooperates with an element for circulating a coolant to extract the heat generated by an intense ion bombardment at each of the hollow chambers.
According to the method, drops of an adhesive material are deposited on one of the plates, with the drops being spaced from one another. A grid having a predefined thickness lower than that of the drops is applied to the plate receiving the drops. A perpendicular and uniform pressure is applied to at least one of the plates, so that the drops spread and come into contact with the opposing sides of the two plates. The spacing of the drops is defined so that after spreading under the pressure applied, air is not trapped between the drops.
B32B 7/14 - Liaison entre couches utilisant des adhésifs interposés ou des matériaux interposés ayant des propriétés adhésives appliqués en disposition espacée, p. ex. en bandes
B32B 37/00 - Procédés ou dispositifs pour la stratification, p. ex. par polymérisation ou par liaison à l'aide d'ultrasons
B29C 65/00 - Assemblage d'éléments préformésAppareils à cet effet
B29C 65/48 - Assemblage d'éléments préformésAppareils à cet effet en utilisant des adhésifs
C23C 14/00 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement
C25B 11/00 - ÉlectrodesLeur fabrication non prévue ailleurs
Centre National de la Recherche Scientifique (France)
Ecole Central de Lyon (France)
Inventeur(s)
Maurin-Perrier, Philippe
Ledrappier, Florent
Mourier, Louis
Donnet, Christophe
Audouard, Eric
Mazuyer, Denis
Abrégé
Friction part in a lubricated medium working at contact pressures above 200 MPa and having a contact surface that is textured and subjected, before or after texturizing, to a case hardening treatment for a tribological function, wherein the surface is subjected to operations for producing a periodic network of micrometric cavities having predefined shapes and sizes and a period adapted to the width of the contact surface in order to promote passage to elastohydrodynamic lubrication regime.
B32B 3/12 - Produits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche discontinue, c.-à-d. soit continue et percée de trous, soit réellement constituée d'éléments individuels caractérisés par une couche d'alvéoles disposées régulièrement, soit formant corps unique dans un tout, soit structurées individuellement ou par assemblage de bandes indépendantes, p. ex. structures en nids d'abeilles
B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
B23K 26/06 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples
F16H 55/06 - Emploi de matériauxEmploi de traitements d'organes dentés ou de vis sans fin pour modifier les propriétés intrinsèques des matériaux
According to the method: -the state of the surface of the substrate (1) is modified to obtain at least one smooth area (1a) -(1b) of a minimal roughness Ra and at least one area (1c) of greater roughness Rax; -a highly electrically conductive material (2) is applied to the different areas (1a), (1b), (1c),; -the smooth area(s) (2a) and (2b) of the material (2) are connected to an electric power source (3).
B32B 17/10 - Produits stratifiés composés essentiellement d'une feuille de verre ou de fibres de verre, de scorie ou d'une substance similaire comprenant du verre comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique
H01C 7/00 - Résistances fixes constituées par une ou plusieurs couches ou revêtementsRésistances fixes constituées de matériaux conducteurs en poudre ou de matériaux semi-conducteurs en poudre avec ou sans matériaux isolants
H01C 17/065 - Appareils ou procédés spécialement adaptés à la fabrication de résistances adaptés pour déposer en couche le matériau résistif sur un élément de base par des techniques de film épais, p. ex. sérigraphie
H05B 3/84 - Dispositions pour le chauffage spécialement adaptées à des surfaces transparentes ou réfléchissantes, p. ex. pour désembuer ou dégivrer des fenêtres, des miroirs ou des pare-brise de véhicules
H05K 1/16 - Circuits imprimés comprenant des composants électriques imprimés incorporés, p. ex. une résistance, un condensateur, une inductance imprimés
H05K 3/00 - Appareils ou procédés pour la fabrication de circuits imprimés
91.
METHOD FOR MAKING A HEATING ELEMENT BY DEPOSITING THIN LAYERS ONTO AN INSULATING SUBSTRATE, AND RESULTING ELEMENT
According to the method: -the state of the surface of the substrate (1) is modified to obtain at least one smooth area (1a) -(1b) of a minimal roughness Ra and at least one area (1c) of greater roughness Rax; -a highly electrically conductive material (2) is applied to the different areas (1a), (1b), (1c),; -the smooth area(s) (2a) and (2b) of the material (2) are connected to an electric power source (3).
B32B 17/10 - Produits stratifiés composés essentiellement d'une feuille de verre ou de fibres de verre, de scorie ou d'une substance similaire comprenant du verre comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique
H01C 7/00 - Résistances fixes constituées par une ou plusieurs couches ou revêtementsRésistances fixes constituées de matériaux conducteurs en poudre ou de matériaux semi-conducteurs en poudre avec ou sans matériaux isolants
H01C 17/065 - Appareils ou procédés spécialement adaptés à la fabrication de résistances adaptés pour déposer en couche le matériau résistif sur un élément de base par des techniques de film épais, p. ex. sérigraphie
H05B 3/84 - Dispositions pour le chauffage spécialement adaptées à des surfaces transparentes ou réfléchissantes, p. ex. pour désembuer ou dégivrer des fenêtres, des miroirs ou des pare-brise de véhicules
H05K 1/16 - Circuits imprimés comprenant des composants électriques imprimés incorporés, p. ex. une résistance, un condensateur, une inductance imprimés
H05K 3/00 - Appareils ou procédés pour la fabrication de circuits imprimés
A guide member has a ring for mounting a pin with friction and articulation and/or sliding capacity. The member is adapted for mounting in the bore of a support. The ring and/or the pin is subjected, at least at its friction surface, to a surface hardening treatment by diffusion or by structural transformation, followed by finishing surface treatment for reducing the tendency to jamming and to reduce the friction coefficient. The friction surface of the ring, comprising its bore, has arrangements acting as a lubricant reserve. The outer periphery of the ring is joined to an element made from a deformable flexible material suitable for being engaged in the bore of the support.
This method consists in subjecting the part or parts (1) to at least one rotational movement with respect to at least one fixed linear row of individual sources (2), said linear row or rows of individual sources (2) being arranged so as to be parallel to the rotation axis or axes of the part or parts.
This method consists in subjecting the part or parts (1) to at least one rotational movement with respect to at least one fixed linear row of individual sources (2), said linear row or rows of individual sources (2) being arranged so as to be parallel to the rotation axis or axes of the part or parts.
A pair of guiding elements is characterized in that at least one of its elements is made of a steel containing at least 0.15 to 0.3% by weight of carbon, 2 to 5% (preferably 2 to 3%) by weight of chromium, at least 0.45% (preferably no greater than 0.9%) by weight of molybdenum, and at least 0.01% by weight and no greater than 0.5% (preferably no greater than 0.3%) of vanadium. This steel is nitrided after being shaped whereby obtaining a compound layer consisting of iron and nitrogen atoms of a thickness ranging from 5 to 50 micrometers. The steel can also contain 0.4% to 1.5% by weight of manganese.
Sputtering target comprising: - between 30 and 40 at% of a metal, - between 2 and 10 at% nitrogen - between 35 and 50 at% oxygen, - the complement to 100% being composed of at least one element chosen from the group comprising phosphorous (P), boron (B), silicon (Si), germanium (Ge), gallium (Ga), sulphur (S) and aluminium (Al). A method of manufacturing a thin film from the target and an electrochemical device comprising the thin film.
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
C23C 14/35 - Pulvérisation cathodique par application d'un champ magnétique, p. ex. pulvérisation au moyen d'un magnétron
The invention relates to a method that comprises: depositing, on one of the plates (2), studs (3) of an adhesive material spaced from each other; applying on the plate (2) with the studs (3) a grid (5) having a predetermined thickness lower than that of the studs (3); applying a uniform and perpendicular pressure on at least one of the plates so that the studs (3) can spread and contact the opposite faces of two plates (1) and (2); wherein the space (4) between the studs is determined so that, after the spreading under the applied pressure, no air is trapped between said studs.
The invention relates to a device for generating a cold plasma in a vacuum chamber and to the use of said device for thermo-chemical processing. The device includes a cathode (1) with hollow cavities (1a) for confining the plasma. Means (2) are provided about each hollow cavity (1a), and said means are capable of generating a magnetic field that forces the electrons to revolve about the field lines, the body of the cathode (1) interacting with a member (3) that allows for a flow of coolant for extracting the calories generated by the intense ionic bombarding at each one of said hollow cavities (1a).
The invention relates to a device for generating a cold plasma in a vacuum chamber and to the use of said device for thermo-chemical processing. The device includes a cathode (1) with hollow cavities (1a) for confining the plasma. Means (2) are provided about each hollow cavity (1a), and said means are capable of generating a magnetic field that forces the electrons to revolve about the field lines, the body of the cathode (1) interacting with a member (3) that allows for a flow of coolant for extracting the calories generated by the intense ionic bombarding at each one of said hollow cavities (1a).
A greased joint assembly operating in oily conditions comprises an axle mounted rotating or pivoting in a ring. The axle and/or the ring are subjected to a hardening surface treatment by diffusion or by structural transformation followed by a finishing surface treatment and a treatment suitable for reducing the tendency to jamming and for reducing the sensitivity to corrosion, and the bore of the ring and/or the axle is provided with arrangements acting as a lubricant reserve.
