Material for electrical contacts

Details Material for electrical contacts Material for electrical contacts

1981-04-30

1982-07-27

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75232, 75234, 252514, 200266, C22C 506, H01B 102

Patent

active

043415563

ABSTRACT:
There is described a material for electrical contacts based on silver having 5 to 20 weight % tin oxide and 0.5 to 5 weight % tungsten oxide which has the welding strength reduced further without producing an increased switching temperature. The material contains additionally 0.1 to 5 weight % of bismuth oxide.

REFERENCES:
patent: 3755723 (1973-08-01), Short
patent: 3798516 (1974-03-01), Short
patent: 3933485 (1976-01-01), Shibata
patent: 3933486 (1976-01-01), Shibata
patent: 4141727 (1979-02-01), Shida
patent: 4204863 (1980-05-01), Schreiner
patent: 4242135 (1980-12-01), Shibata
patent: 4243413 (1981-01-01), Shibata
Chemical Abstracts, vol. 90, 1979, Abstract No. 90:146524z, Ezawa, Nobuyasu, "Silver-Tin Oxide Type Contact Material".
Chemical Abstracts, vol. 94, 1981, Abstract No. 94:196245s, Boehm, Wolfgang, German Offen. 2933338, 2-1981, "Silver Alloy for Electrical Contacts".

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