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    • 10. 发明授权
    • Non-lead sealing glasses
    • 非铅密封眼镜
    • US5281560A
    • 1994-01-25
    • US78648
    • 1993-06-21
    • Gaylord L. FrancisRobert Morena
    • Gaylord L. FrancisRobert Morena
    • C03C3/16C03C8/24H01L23/10C03C3/21
    • C03C3/16C03C8/24
    • Lead-free, tin phosphate glasses contain 25-50 mole percent P.sub.2 O.sub.5, 30-70% SnO, 0-15% ZnO, the mole ratio of SnO:ZnO being greater than 5:1, and an effective amount up to 25% total of at least one oxide in the indicated proportion selected from the group consisting of up to 25% R.sub.2 O, wherein R.sub.2 O consists of 0-25% Li.sub.2 O, 0-25% Na.sub.2 O, and 0-25% K.sub.2 O, up to 20% B.sub.2 O.sub.3, up to 5% Al.sub.2 O.sub.3, up to 5% SiO.sub.2, and up to 5% WO.sub.3. The glasses are particularly useful as sealing glass frits in sealing material to join component parts in electrical and electronic devices. The sealing glass material may contain mill additions to reduce the effective coefficient of thermal expansion in a seal, as well as a strength reinforcing additive having a coefficient of thermal expansion preferably below 120.times.10.sup.-7 /.degree.C.
    • 无铅锡磷酸盐玻璃含有25-50摩尔%的P2O5,30-70%的SnO,0-15%的ZnO,SnO:ZnO的摩尔比大于5:1,有效量高达25% 的至少一种氧化物,所述比例选自最高达25%的R2O,其中R2O由0-25%Li2O,0-25%Na2O和0-25%K2O组成,最高达20%B2O3, 高达5%的Al2O3,至多5%的SiO 2和至多5%的WO 3。 该玻璃特别适用于密封材料中的玻璃料,用于连接电气和电子设备中的组件。 密封玻璃材料可以包含研磨添加物以减少密封件中的有效热膨胀系数,以及具有优选低于120×10-7 /℃的热膨胀系数的强度增强添加剂。