| abstract |
The invention provides a lithium metasilicate glass-ceramic, the composition of which comprises: SiO 2 60-75%, Li 2 O 9-16%, Li 3 PO 4 5-12%, ZrSiO 4 3-8%, A1 2 O 3 3-6%, K 2 O 3-5%, CeO 2 1.5-3%; the present invention also provides a preparation method, comprising (1) a lithium-containing compound, a potassium-containing compound, an aluminum-containing compound, SiO 2 , nucleating agent and CeO 2 are mixed, and the binder, dispersant and water are added for grinding and drying to obtain the base glass powder; (2) the base glass powder is melted at a high temperature of 1500-1650° C., and poured into molding (3) The transparent glass body is heated to 610-750° C., kept for 70-90 minutes, and cooled to obtain lithium metasilicate glass-ceramic. The lithium metasilicate glass-ceramic provided by the invention has good mechanical properties in the application process, which broadens the application range of the glass-ceramic. |