Internal oxidized Ag-Sn-In system alloy electrical contact composite
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United States of America Patent
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Jun 9, 1987
Grant Date -
N/A
app pub date -
Oct 28, 1985
filing date -
Nov 8, 1984
priority date (Note) -
Expired
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Abstract
Electrical contact materials made from Ag-Sn-In system alloys which have been internally oxidized. A substratum or base part of the materials is internally oxidized after having been clad with a thin layer of alloys of the same alloy system, concentration of solute elements of which is, however, smaller than that of the substratum alloys, so that no segregation of the solute metal elements shall be produced within the substratum alloys. Electrical contact resistance and consequent temperature raise of the internally oxidized materials under operation are considerably lowered.
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