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

1975-09-17

1977-03-29

Steiner, Arthur J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75123R, 75123A, 75123AA, 75123F, 75123J, C22C 3812

Patent

active

040146880

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: 2378548 (1945-06-01), Gregg et al.
patent: 2579452 (1951-12-01), Eckman et al.
patent: 3010823 (1961-11-01), Avery et al.
patent: 3424576 (1969-01-01), Fogleman et al.
patent: 3437479 (1969-04-01), Nakajima
patent: 3655368 (1972-04-01), Walter et al.
patent: 3762915 (1973-10-01), Heine et al.

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