Patent ID: 10017415

Abstract:
A transparent, colorless and non-scattering glass-ceramic plate of lithium aluminosilicate type and containing crystals of β-quartz structure, the chemical composition of which does not contain oxides of arsenic, of antimony and of neodymium, and includes the following constituents within the limits defined below, expressed as weight percentages: SiO2 55-75%; Al2O3 12-25%; Li2O 2-5%; Na2O+K2O 0-<2%; Li2O+Na2O+K2O 0-<7%; CaO 0.3-5%; MgO 0-5%; SrO 0-5%; BaO 0.5-10%; CaO+BaO >1%; ZnO 0-5%; TiO2 ≤1.9%; ZrO2 ≤3%; TiO2+ZrO2 >3.80%; SnO2 ≥0.1%; SnO2/(SnO2+ZrO2+TiO2)<0.1.