| 摘要 |
A lead- and alkali metal-free bismuth borosilicate glass composition has specified aluminum oxide and fluorine contents and low barium and strontium oxide contents. A lead- and alkali metal-free bismuth borosilicate glass composition comprises (by wt.) 50-90% Bi2O3, 5-20% SiO2, 2-9% B2O3, 0.1-10% Al2O3, 0-8% TiO2, 0-9% ZnO, 0-10% ZrO2,0-4% F<->, up to 10% SrO, up to 7% CaO, up to 7% MgO, up to 10% CeO, up to 10% MnO, up to 10% SnO, up to 7% P2O5, up to 10% Sb2O3, up to 10% Fe2O3 and up to 10% Nb2O5. Independent claims are also included for the following: (i) a glass frit produced from the above glass composition; (ii) a glass enamel paste containing the above glass frit; and (iii) a non-porous substrate, on which the above glass enamel paste is fired. |
