Directionally crystallized LAS microcrystalline glass and preparation method thereof

• Main Author: LI CHANGJIU
• Format: Patent
• Language: Chinese; English
• Published: 14.01.2022
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

The invention relates to the technical field of glass ceramics, in particular to directionally crystallized LAS microcrystalline glass and a preparation method thereof. The directionally crystallized LAS microcrystalline glass comprises the following components in percentage by weight: 40wt%-60wt% of SiO2; 6 wt%-15 wt% of Al2O3; 6 wt%-15 wt% of Li2CO3; 10 wt% to 25 wt% of B2O3; 0 wt%-6 wt% of ZnO; 0 wt% to 6 wt% of Na2O; 0.5 wt% to 4 wt% of TiO2; 1.5 wt% to 6 wt% of La2O3; and 2 wt%-8 wt% of Y2O3. The directionally crystallized LAS microcrystalline glass provided by the invention adopts specific components in a specific ratio, the smelting temperature can be obviously reduced, the smelting time can be shortened, and meanwhile,directionally crystallized orientation and the surface hardness of crystals are obviously improved in cooperation with thermal-electric field coupling treatment. 本发明涉及微晶玻璃技术领域，尤其涉及一种定向析晶LAS微晶玻璃及其制备方法。定向析晶LAS微晶玻璃包括：SiO240wt％～60wt％；Al2O36wt％～15wt％；Li2CO36wt％～15wt％；B2O310wt％～25wt％；ZnO 0wt％～