Material for electric contacts and process for producing same

Details Material for electric contacts and process for producing same Material for electric contacts and process for producing same

H - Electricity

01

B

75/162, 75/72, 7

H01B 1/02 (2006.01) C22C 32/00 (2006.01) H01H 1/0237 (2006.01) H01H 11/04 (2006.01)

Patent

CA 1149645

ABSTRACT OF THE DISCLOSURE As a substitute for conventional Ag/CdO materials for electric contacts materials are required which are based on Ag/SnO2 and contain a further metallic oxide component to im- prove the weld strength without having to accept a higher temp- erature in the switching device. According to the invention this is achieved with a material containing 8 to 20% by weight of tin oxide, 0.05 to 5% by weight of tungsten oxide, the rest being silver. If required, the material can also contain 0.1 to 5% by weight of metallic chromium.

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