Electrical contact materials

Details Electrical contact materials Electrical contact materials

1975-06-13

1976-09-21

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75211, 75200, 294205, 252514, 252521, B22F 100, B22F 300

Patent

active

039817261

ABSTRACT:
An electrical contact material which consists of a mixture of silver, 5 to 50 weight per cent of copper and 2 to 20 weight per cent of lanthanum, strontium chromite of formula La.sub.1-x Sr.sub.x CrO.sub.3, where the values of x lie between 0 and 1.0, formed as a hard, chemically inert, non-metallic phase of high electrical conductivity both within the bulk of, and at the surface of, the contact material. Methods of producing the electrical contact materials utilizing powder metallurgical techniques are outlined.

REFERENCES:
patent: 3385677 (1968-05-01), Schreiner
patent: 3506437 (1970-04-01), Gwyn, Jr.
patent: 3630968 (1971-12-01), Hamano

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