Glass ceramic, tempered glass and preparation method and application thereof

The invention relates to microcrystalline glass, tempered glass and a preparation method and application thereof. The microcrystalline glass comprises a spinel crystal phase with the crystallinity greater than 20%; the microcrystalline glass comprises the following components in percentage by mass: 35% < = SiO2 < = 55%, 15% < = Al2O3 < = 35%, 0% < = Li2O < 1%, 0% < = MgO < = 10%, 0% < = Na2O < = 15%, 5% < = ZnO < = 15%, 0% < = ZrO2 < = 6%, and 0% < = TiO2 < = 6%. The composition of the microcrystalline glass meets the following conditions in percentage by mass: greater than or equal to 67% of SiO2 and Al2O3, greater than or equal to 3% and less than or equal to 8% of ZrO2 and TiO2, less than or equal to 16% of MgO and ZnO, and less than or equal to 0.11 of Li2O/(MgO and ZnO). 本申请涉及一种微晶玻璃、强化玻璃及其制备方法、应用。微晶玻璃包含有结晶度＞20％的尖晶石晶相；按质量百分比计，微晶玻璃的组成包括：35％≤SiO2≤55％、15％≤Al2O3≤35％、0％≤Li2O＜1％、0％≤MgO≤10％、0％≤Na2O≤15％、5％≤ZnO≤15％、0％≤ZrO2≤6％、及0％≤TiO2≤6％；所述微晶玻璃的组成的质量百分比满足以下条件：SiO2+Al2O3≥67％，3％≤ZrO2+TiO2≤8％，MgO+ZnO≤16％，Li2O/(MgO+Zn