| 摘要 |
<p>A tungsten sealing glass for use in a fluorescent lamp has a composition of, by mass percent, 65-76 % SiO2, 10-25 % B2O3, 2-6 % Al2O3, 0.5-5.8 % MgO + CaO + SrO + BaO + ZnO, 3-8 % Li2O + Na2O + K2O, 0.01-4 % Fe2O3 + CeO2, 0-10 % TiO2 + Sb2O3 + PbO, and 0-2 % ZrO2, where Na2O/(Na2O + K2O) </= 0.6.</p> |
