Silver base electrical contact material

Details Silver base electrical contact material Silver base electrical contact material

1995-09-26

1997-01-07

Jordan, Charles T.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75232, C22C 506

Patent

active

055919260

ABSTRACT:
A silver base electrical contact material is described which contains uniformly in a silver matrix dispersed particles of nickel, nickel oxide, and at least one additive selected from the group consisting of vanadium, manganese, chromium, thallium, titanium, cobalt, and tungsten carbide. The contact material contains 1.3 to 24.8 wt % of nickel, 0.2 to 4.7 wt % of nickel oxide, 0.05 to 3 wt % of the additive, and balance silver. A superior silver base contact material having excellent welding and wear resistances is obtained by adding the metals and the metal carbide to a silver-nickel-nickel oxide contact material.

REFERENCES:
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patent: 4834939 (1989-05-01), Bornstein
patent: 4874430 (1989-10-01), Bornstein
patent: 5022932 (1991-06-01), Yamada et al.
patent: 5198015 (1993-03-01), Tsuji et al.
ASM Handbook, vol. 7, Powder Metallurgy, 1984, pp. 630-634.

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