Platinum corrosion reducing premelted oxide compositions for lead containing solder glasses
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United States of America Patent
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Sep 29, 1987
Grant Date -
N/A
app pub date -
Apr 7, 1986
filing date -
Apr 7, 1986
priority date (Note) -
Expired
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Abstract
Platinum corrosion reducing amounts of a premelted oxide mixture that is PbO and B.sub.2 O.sub.3, or PbO and SiO.sub.2, or PbO, SiO.sub.2 and B.sub.2 O.sub.3 are added to raw batch ingredients for a lead-containing solder glass. All or part of the Pb.sub.3 O.sub.4 or PbO normally used in the raw batch is replaced for advantages including reducing the amount of platinum corrosion in a platinum melter used to melt the raw batch to provide the glass.
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