Glass tube for metal sealing and glass for metal sealing
AssigneeNippon Electric Glass Co., Ltd.
InventorsTatsuya Goto, Kakumi Shiraishi, Kiyoyuki Okunaga, Koichi Hashimoto
Life of this patent
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Abstract
A glass tube for sealing a metal includes a glass that contains, in terms of mass %, 50% or more of SiO2+B2O3, 0% to 10% of Al2O3, 3% to 20% of RO (R is an alkaline earth metal), and 11% to 22% of R′2O (R′ is an alkali metal), and that has 10 μl/g or less of an amount of CO2 emitted when heated from a room temperature to 1100° C.
Claims8
A glass tube for sealing a metal, comprising a glass that contains, in terms of mass %, 50% or more of SiO2+B2O3, 0% to 10% of Al2O3, 3% to 20% of RO (R is an alkaline earth metal), and 11% to 22% of R′2O (R′ is an alkali metal), 0% to 3% of SrO, 8% to 15% of K2O, 4.5% to 8% of BaO, 0% to 2% of B2O3, 0.3% to 2% of Sb2O3, and 1% or less of Fe2O3, and that has 10 μl/g or less of an amount of CO2 emitted when heated from a room temperature to 1100° C.
A glass for sealing a metal, comprising, in terms of mass %, 69% to 74% of SiO2, 0.1% to 2% of B2O3, 2% to 6% of Al2O3, 0% to 10% of MgO, 0% to 10% of CaO, 0.1% to 3% of SrO, 4.5% to 8% of BaO, 0% to 4% of ZnO, 2% to 4% of Li2O, 3% to 6% of Na2O, 8% to 11% of K2O, and 0.3% to 2% of Sb2O3, and 1% or less of Fe2O3.
Dependencies are inferred from the claim text.