| 摘要 |
<p>For environmental protection, a glass composition for lamps that can suppress the consumption of mercury by the glass is provided. An embodiment of the glass composition consists essentially of, expressed in percentages by weight: SiO2:65-75, Al2O3:0.5-4, Na2O: 1-8, K2O: 1-8, Li2O: 0-2, MgO: 0.5-5, CaO: 1-8, SrO: 1-7, BaO: 3.5-7, B2O3: 0-3, Sb2O3: 0-1, Fe2O3: 0-0.2, TiO2: 0-1, CeO2: 0-1; and the total amount of Na2O, K2O and Li2O is not more than 13 weight %. The glass composition is substantially free of lead. <IMAGE></p> |
