Electrical contact materials and methods of making the same

Details Electrical contact materials and methods of making the same Electrical contact materials and methods of making the same

1974-11-25

1976-06-29

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

C22C 506, C22C 103

Patent

active

039664643

ABSTRACT:
The contact materials comprise silver with additions of mercury or mercury and tellurium and silver-cadmium oxide compositions with additions of mercury and tellurium. The methods of making the materials include the steps of adding a silver-mercury alloy to molten silver and to a molten silver-tellurium powder mixture. The materials including cadmium oxide are produced by heating a mixture of powders of silver, a cadmium-tellurium compound, cadmium oxide, and mercuric oxide powders in a reducing atmosphere and then reoxidizing.

REFERENCES:
patent: 550360 (1895-11-01), Wurts
patent: 1719365 (1929-07-01), Gray et al.
patent: 1720215 (1929-07-01), Gray et al.

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