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    • 2. 发明授权
    • Hermetic sealing composition
    • 密封组合物
    • US5916832A
    • 1999-06-29
    • US986325
    • 1997-12-05
    • Ryuichi TanabeHiroshi UsuiTsuneo ManabeYuichi Kuroki
    • Ryuichi TanabeHiroshi UsuiTsuneo ManabeYuichi Kuroki
    • C03C8/24C03C10/00
    • C03C10/0054C03C8/245
    • A hermetic sealing composition consisting essentially of from 90 to 99.95 wt % of a crystalline low melting glass powder and from 0.05 to 10 wt % of a low expansion ceramic filler powder, and having an average thermal expansion coefficient after firing of from 80.times.10.sup.-7 to 110.times.10.sup.-7 /.degree.C. within a range of from room temperature to 300.degree. C., wherein the crystalline low melting glass consists essentially of:______________________________________PbO 71.5 to 78.0 wt %ZnO 10.5 to 14.5 wt %B.sub.2 O.sub.3 7.0 to 10.0 wt %SiO.sub.2 1.65 to 3.0 wt %BaO 0.1 to 1.95 wt %SrO 0 to 1.5 wt %CaO 0 to 1.5 wt %BaO + SrO + CaO 0.5 to 1.95 wt %,______________________________________and contains substantially no fluorine, and the weight ratio of ZnO/PbO is within a range of from 0.14 to 0.20.
    • 一种气密密封组合物,其基本上由90至99.95重量%的结晶低熔点玻璃粉末和0.05至10重量%的低膨胀陶瓷填料粉末组成,并且煅烧后的平均热膨胀系数为80×10 -7至 在室温至300℃的范围内为110×10 -7 /℃,其中结晶低熔点玻璃基本上由以下组成: - PbO 71.5〜78.0重量%-Zn.10.5〜14.5重量%-B2O3 7.0〜10.0重量% %-SiO 2 1.65〜3.0重量%BaO 0.1〜1.95重量%SrO 0〜1.5重量%CaO 0〜1.5重量%BaO + SrO + CaO 0.5〜1.95重量%,基本上不含氟, ZnO / PbO的重量比在0.14〜0.20的范围内。