| 摘要 |
Thermally stable and chemically resistant glass composition. The glass compositions according to the invention include the following constituents within the limits expressed below as cation percentages: SiO2 46 to 56 % Al2O3 12 to 17 % B2O3 10 to 23 % CaO 9 to 15 % MgO 0.5 to 4 % SrO 2 to 7 % BaO 0 to 4 % Na2O + K2O </= 0.5 % TiO2 0 to 3 %. These glasses can be employed for the manufacture of packages, of fire-resistant glazing or substrates for the electronics industry. |
