Electrical contact compositions and novel manufacturing method

Details Electrical contact compositions and novel manufacturing method Electrical contact compositions and novel manufacturing method

1994-03-30

1996-05-14

Luebke, Renee S.

Electricity: circuit makers and breakers

Electric switch details

Contact

H01H 102

Patent

active

055169953

ABSTRACT:
A new class of low chop contact materials based on Ag-chromium carbide and Ag-Cr compositions have an essentially 100% dense, porosity free microstructure. These materials combine the advantageous properties of Ag-WC and Cu-Cr contacts without their disadvantages. A method of making this new class of low chop contact materials includes the steps of cold pressing a mixture of Ag and chromium or chromium carbide to form an unsintered blank and the elevated temperature infiltration of silver into the unsintered blank to obtain an essentially 100% dense, porosity free microstructure.

REFERENCES:
patent: 4457780 (1984-07-01), Osada et al.

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