| 摘要 |
PROBLEM TO BE SOLVED: To obtain a sealing material containing no toxic material and capable of sealing a package at <=330 deg.C without loading. SOLUTION: This sealing material is a mixture consisting of 10-55 vol.% of a refractory material powder and 45-90 vol.% of a low melting point composition powder comprising 20-40 mol.% of Ag2O, 0-20 mol.% of AgI, 20-45 mol.% of P2O5, 2-25 mol.% of PbF2+ZnF2+BiF3 and 0-35 mol.% of PbO+ZnO+CuO and <=40 mol.% of PbF2+ZnF2+BiF3+PbO+ZnO+CuO.
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