Silver-iron material for electrical switching contacts (III)

Details Silver-iron material for electrical switching contacts (III) Silver-iron material for electrical switching contacts (III)

1996-11-19

1998-03-17

Mai, Ngoclan

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75232, 75247, 75252, 419 21, 419 26, 419 42, 420501, 252513, C22C 2912

Patent

active

057281947

ABSTRACT:
Silver-iron materials for electrical switching contacts with properties which come very close to those of silver-nickel materials formed of 0.5 to 20% by weight iron 0.5 to 5% by one or more of the elements rhenium, iridium, and ruthenium, and 0.05 to 2% by weight of one or more of the oxides magnesium oxide, calcium oxide, yttrium oxide, lanthanum oxide, titanium oxide, zirconium oxide, hafnium oxide, cerium oxide, niobium oxide, tantalum oxide, chromium oxide, manganese oxide, iron oxide, zinc oxide, copper oxide, aluminum oxide, indium oxide, silicon oxide, and tin oxide, the balance being silver.

REFERENCES:
patent: 3951872 (1976-04-01), Neely
patent: 4204836 (1980-05-01), Schreiner
patent: 4279649 (1981-07-01), Fujiwara et al.
patent: 4330331 (1982-05-01), Fujiwara et al.
patent: 4859238 (1989-08-01), Weise et al.
patent: 5246480 (1993-09-01), Haufe et al.
patent: 5422065 (1995-06-01), Hauner et al.

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