Electrical contact material and process

Details Electrical contact material and process Electrical contact material and process

1975-10-08

1977-03-08

Hunt, Brooks H.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

75200, 75206, 148126, 200266, B22F 100, B22F 300

Patent

active

040110524

ABSTRACT:
A material for use in making electrical contacts is produced in a powder form suitable for later processing into electrical contacts by standard metallurgical techniques. The material consists of a first metal, such as silver, and the oxide of a second metal, such as cadmium, added to the first metal in a proportion up to the limits of solubility of the second metal in the first metal. An oxide of a third metal having a low electronic work function level, such as lithium oxide, is added and uniformly distributed on the surfaces of the powder particles by precipitation. A fourth metal, such as tellurium, that is insoluble in the first metal is also added to provide selected characteristics.

REFERENCES:
patent: 2396101 (1946-03-01), Hensel et al.
patent: 2770700 (1956-11-01), Holm et al.
patent: 2890315 (1959-06-01), Graves
patent: 3472654 (1969-10-01), Comey et al.
patent: 3501287 (1970-03-01), Lever
Broadwarow, Proceedings 5th International Conference on Electrical Contact Phenomena, Munich, May 1970.

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