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Low-expansion lithium aluminum silicon transparent glass ceramic

A technology of glass-ceramic and lithium-aluminum-silicon is applied in the field of low-expansion lithium-aluminum-silicon transparent glass-ceramic, which can solve the problems of limiting the application range of glass-ceramic, safety production and environmental risks, and lack of transparency of glass-ceramic. , to achieve the effect of good chemical stability, good light transmittance and high strength

Active Publication Date: 2014-04-16
AVIC (HAINAN) SPECIAL GLASS MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, glass-ceramics generally do not possess transparency, such as a lithium-aluminum-silicate glass-ceramic using high-silicon iron tailings, which limits the scope of application of glass-ceramics; in order to make glass-ceramics have certain transparency property, adding As in the glass-ceramics 2 o 3 As a clarifying agent, however As 2 o 3 There are potential dangers to safety production and environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] B 2 o 3 6%;K 2 O+ Na 2 O 8%; SiO 2 56%; A1 2 o 3 18%; Li 2 O 3.25%; MgO 3.5%; 1.6% Sb added 2 o 3 and 0.35% CeO 2 As clarifier; add 2.5% TiO 2 and 0.8% ZrO 2 as crystal nucleating agent.

[0022] Weigh various raw materials according to the designed glass composition, and fully mix them uniformly; put the uniformly mixed batch materials into a corundum crucible for melting at 1550°C, pour into blocks and anneal at 600°C and cool to room temperature; put the cooled basic glass Put it into an electric furnace for heat treatment, first raise the temperature to the nucleation temperature of 610°C and keep it for 60 minutes, then continue to heat it to the crystallization temperature of 830°C and keep it for 40 minutes for crystallization treatment; after the heat treatment, control the electric furnace to let the sample cool down at a constant speed to obtain expansion Coefficient α 20～400℃ 18×10 -7 / °C, the grain radius is only 20-50nm, and the transmittan...

Embodiment 2

[0024] B 2 o 3 9%; (K 2 O+ Na 2 O) 5%; SiO 2 62.75%; A1 2 o 3 15.8%; Li 2 O 2%; MgO 1%; add 1.6% Sb 2 o 3 and 0.35% CeO 2 As clarifier; add 2.5% TiO 2 and 0.8% ZrO 2 as crystal nucleating agent.

[0025] Weigh various raw materials according to the designed glass composition, and fully mix them evenly. Put the uniformly mixed batch into a corundum crucible for melting at 1550°C, pour it into blocks and anneal at 600°C to cool to room temperature; put the cooled basic glass into an electric furnace for heat treatment, first raise the temperature to the nucleation temperature of 610°C and keep it warm for 60 min, and then continue to heat to the crystallization temperature of 830°C for 40 minutes for crystallization treatment; after the heat treatment, control the electric furnace to let the sample cool down at a constant speed, and the expansion coefficient α can be obtained 20～400℃ 15 x 10 -7 / °C, the grain radius is only 20-50nm, and the transmittance Tvis(%...

Embodiment 3

[0027] B 2 o 3 7%; (K 2 O+ Na 2 O) 5.75%; SiO 2 64%; A1 2 o 3 13%; 2 O 4%; MgO 1%; add 1.6% Sb 2 o 3 and 0.35% CeO 2 As clarifier; add 2.5% TiO 2 and 0.8% ZrO 2 as crystal nucleating agent.

[0028] Weigh various raw materials according to the designed glass composition, and fully mix them uniformly; put the uniformly mixed batch materials into a corundum crucible for melting at 1550°C, pour into blocks and anneal at 600°C and cool to room temperature; put the cooled basic glass Put it into an electric furnace for heat treatment, first raise the temperature to the nucleation temperature of 610°C and keep it for 60 minutes, then continue to heat it to the crystallization temperature of 830°C and keep it for 40 minutes for crystallization treatment; after the heat treatment, control the electric furnace to let the sample cool down at a constant speed to obtain expansion Coefficient α 20～400℃ 20×10 -7 / °C, the grain radius is only 20-50nm, and the transmittance ...

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Abstract

The invention belongs to the technical field of special glass production and manufacturing and provides low-expansion lithium aluminum silicon transparent glass ceramic. The low-expansion lithium aluminum silicon transparent glass ceramic comprises the following basic ingredients by mass percentage: 6-9% of B2O3, 5-10% of K2O+Na2O, 56-64% of SiO2, 13-18% of Al2O3, 2-4% of Li2O, and 1-3.5% of MgO, wherein clarifiers and nucleation agents are added into the basic ingredients of the transparent nucleated glass; the clarifiers are Sb2O3 and CeO2; the additions of Sb2O3 and CeO2 are 1.6% and 0.35% respectively; the nucleation agents are TiO2 and ZrO2; and the additions of TiO2 and ZrO2 are 2.5% and 0.8% respectively. The transparent nucleated glass has excellent light transmittance and chemical stability, high strength and low expansion coefficient.

Description

technical field [0001] The invention belongs to the technical field of special glass production and manufacture, and mainly relates to a low-expansion lithium-aluminum-silicon transparent glass-ceramic. Background technique [0002] Glass-ceramics is a hard, dense and uniform composite material composed of crystalline phase and glass phase, which is made of glass particles with appropriate composition after sintering and crystallization. The scientific name of glass-ceramic is glass-ceramic, which has the dual characteristics of glass and ceramics. Compared with ceramics, glass-ceramic has higher brightness and stronger toughness than glass. It can be used for building curtain walls and indoor high-end decoration, and can also be used as mechanical structural materials. Insulating materials for electronics and electrical engineering, backplane materials for large-scale integrated circuits, chemical and anti-corrosion materials, and wear-resistant materials for mines, etc. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/14
Inventor 田瑞平赵会峰吴建玉张振华姜宏潘国治崔永红周莉陈垂昌谭惠
Owner AVIC (HAINAN) SPECIAL GLASS MATERIALS CO LTD
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