Contact material for high-power vacuum circuit breakers

Details Contact material for high-power vacuum circuit breakers Contact material for high-power vacuum circuit breakers

1972-05-10

1976-04-06

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75123AA, 75123A, 75153, 75154, C22C 1900

Patent

active

039486524

ABSTRACT:
A new material for making the electrical contacts of high-power vacuum circuit breakers comprises an alloy having as a base metal, a metal such as copper, nickel, iron, cobalt or titanium, and as an alloying metal, a metal such as bismuth, tellurium or lead, this alloy also including an auxiliary metal which forms a eutectic with the base metal used. The alloy has a fine grain size while at the same time a low gas content.

REFERENCES:
patent: 2157979 (1939-05-01), Cooper
patent: 2182759 (1939-12-01), Harder
patent: 2209935 (1940-07-01), Samuels
patent: 2215734 (1970-09-01), Harder
patent: 2239800 (1941-04-01), Vogt
patent: 2375506 (1945-05-01), Turck
patent: 3343949 (1967-09-01), Wikle
patent: 3437479 (1969-04-01), Nakajima
patent: 3471343 (1939-10-01), Koehler
patent: 3655368 (1972-04-01), Walter

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