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

1976-07-20

Dean, R.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

200266, C22C 506

Patent

active

039704513

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), Wurst
patent: 1719365 (1929-07-01), Gray et al.
patent: 1720215 (1929-07-01), Gray et al.
patent: 2116215 (1938-05-01), Ruben
patent: 2319259 (1943-05-01), Peterson
patent: 3171052 (1965-02-01), Schwartzwalder
patent: 3246979 (1966-04-01), Lafferty et al.

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