Composite electrical contact material of Ag-alloy matrix and int

Details Composite electrical contact material of Ag-alloy matrix and int Composite electrical contact material of Ag-alloy matrix and int

1978-03-22

1979-07-17

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75173R, C22C 506

Patent

active

041614038

ABSTRACT:
Internally oxidized Ag-Sn alloy electrical contact materials have their electrical characteristics improved by being compounded with other Ag alloys containing metal elements which are in solid solution with Ag and are internally oxidizable. Compounds obtained in accordance with this invention include microscopic silver grain matrices containing Sn oxides and other silver grain matrices which contain metallic oxides of the said other Ag alloys and are intercoalesced with each other and with the first mentioned silver grain matrices, and present macroscopically improved electric characteristics as if they were a single alloy.

REFERENCES:
patent: 3666428 (1972-05-01), Haarbye
patent: 3868275 (1975-02-01), Godfrey et al.
patent: 3930849 (1976-01-01), Krock et al.
patent: 3933486 (1976-01-01), Shibata
patent: 4050930 (1977-09-01), Motoyoshi et al.
patent: 4131458 (1978-12-01), Satoh et al.
Harmsen et al., ". . . Ag-Metal Oxide . . . Contacts", Z. Mettkde, 58 (1967) 752.

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