| 摘要 |
The invention relates to a non-diffusing, colorless, transparent lithium aluminosilicate vitroceramic plate containing β-quartz crystals, the chemical composition of which does not contain arsenic, antimony, or neodymium oxides. Said vitroceramic plate also includes the following components within the defined limits, hereinafter expressed in wt%: 55-75% SiO2, particularly 60-70%; 12-25% A12O3, particularly 19-24%; 2-5% Li2O, particularly 3-4%; 0-<2% Na2O+ K2O, particularly 0-1%; 0-<7% Li2O+Na2O+K2O, particularly 0-5%; 0.3-5% CaO; 0-5% MgO, particularly 0-1%; 0-5% SrO, particularly 0-1%; 0.5-10% BaO, particularly 1-5%; >1% CaO+BaO, particularly 3-5%; 0-5% ZnO, particularly 1-2%; ≤1.9% TiO2; ≤3% ZrO2, particularly 2-3%; >3.80% TiO2+ZrO2; >0.1% SnO2; and <0.1 SnO2/(SnO2+ZrO2+TiO2), particularly <0.06. |
