| 摘要 |
PROBLEM TO BE SOLVED: To obtain glass which contains no lead component so as to reduce load of environment, is usable at a sufficiently low temperature to seal and coat an electronic part and stands a practical use. SOLUTION: This lead-free glass has a composition comprising 5.1-60 mol% calculated as CuO of copper, 25-75 mol% P2O5 and 1-60 mol% RO (RO is one or more kinds selected from the group consisting of ZnO, BaO, CaO, MgO, SrO, SnO, NiO, FeO and MnO) based on oxide.
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