Abstract

222323222522O is an alkali metal oxide, and RO is an alkaline earth metal oxide. The obtained molten glass has a low liquidus viscosity and a low forming temperature, and is suitable for fusion leakage forming of a platinum pipeline or a platinum former.

IPC Classes  ?

• C03C 10/14 - Silica crystalline phase, e.g. stuffed quartz, cristobalite
• C03C 10/04 - Silicate or polysilicate crystalline phase, e.g. mullite, diopside, sphene, plagioclase
• C03C 10/12 - Lithium aluminosilicate, e.g. spodumene, eucryptite
• C03C 10/02 - Non-silica and non-silicate crystalline phase, e.g. spinel, barium titanate
• C03C 4/02 - Compositions for glass with special properties for coloured glass
• C03B 32/02 - Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles
• C03B 5/235 - Heating the glass
• C03C 21/00 - Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals into the surface

Abstract

A method for analyzing a crystallization starting temperature of microcrystalline glass, a method for analyzing a crystallization temperature interval of microcrystalline glass, and a microcrystalline glass production method. The method for analyzing the crystallization starting temperature of microcrystalline glass comprises the following steps: acquiring basic glass; preparing crystallized samples of the basic glass under different heat treatment temperature conditions, and measuring differential thermal curves of the crystallized samples treated under different heat treatment temperature conditions; and comparing the differential thermal curves of the crystallized samples treated under two close heat treatment temperature conditions, and if the number of crystallization peaks in the differential thermal curve of the crystallized sample treated at a higher heat treatment temperature is less than that in the differential thermal curve of the crystallized sample treated at a lower heat treatment temperature by one, setting the higher heat treatment temperature as the crystallization starting temperature of the microcrystalline glass.

IPC Classes  ?

• G01N 25/20 - Investigating or analysing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
• C03B 32/02 - Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles
• C03C 10/10 - Alkali metal aluminosilicate crystalline phase
• C03C 10/04 - Silicate or polysilicate crystalline phase, e.g. mullite, diopside, sphene, plagioclase

Abstract

4102254104102255 is ≥1.13; and the average transmittance of light with a wavelength of 380-780 nm is ≥ 90.5%, the b value is ≤ 0.45, the haze is ≤ 0.25, and the drop height is ≥ 1.6 m. The glass ceramics article is used for display screens, electronic intelligent terminals and photovoltaic devices.

IPC Classes  ?

• C03C 10/12 - Lithium aluminosilicate, e.g. spodumene, eucryptite
• C03C 10/04 - Silicate or polysilicate crystalline phase, e.g. mullite, diopside, sphene, plagioclase
• C03C 10/02 - Non-silica and non-silicate crystalline phase, e.g. spinel, barium titanate

Abstract

22325222222O on the surface of the strengthened glass ceramics is 0.5%-7%, the surface compressive stress is 120 MPa to 400 MPa, the compressive stress from the glass surface to the depth of 30 nm inside the glass is 70 MPa to 200 MPa, the depth of layer is 90 μm to 150 μm, and the average transmittance at 380 nm to 780 nm after a double 85 experiment is greater than or equal to 90.5%. The excellent mechanical performance of the glass ceramics can be ensured while the technical problem of fogging and molding on the surface of the glass caused by agglomeration of Na+ is solved. The prepared glass-ceramic product can be applied to the field of display screens, electronic intelligent terminals or photovoltaic power generation devices.

IPC Classes  ?

• C03C 3/097 - Glass compositions containing silica with 40% to 90% silica by weight containing phosphorus, niobium or tantalum
• C03C 10/12 - Lithium aluminosilicate, e.g. spodumene, eucryptite
• C03C 21/00 - Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals into the surface
• C03B 32/02 - Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles

Abstract

The present invention comprises controlling nucleation and crystallization treatment so as to obtain pre-crystallized microcrystalline glass; and then subjecting the pre-crystallized microcrystalline glass to 3D hot-bending treatment so as to prepare 3D microcrystalline glass. By means of first controlling the crystalline phase structure of the pre-crystallized microcrystalline glass, different changes of glass phase and crystalline phase structures during a 3D hot-bending process can be controlled then, so as to obtain the 3D microcrystalline glass having higher dimensional precision and lower warping.

IPC Classes  ?

• C03C 10/00 - Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
• C03B 23/023 - Re-forming glass sheets by bending
• C03B 32/02 - Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles