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Document Type and Number:
Japanese Patent JPS5140940
Kind Code:
B2
Abstract:
A contact material for a vacuum switch having a composition comprising from 50 to 75 percent of tungsten carbide, from 0.3 to 5 percent of cobalt, and a remainder of copper, said tungsten carbide having a finely pulverized structure of a grain size of less than 1.2 microns.

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Application Number:
JP2332072A
Publication Date:
November 06, 1976
Filing Date:
March 07, 1972
Export Citation:
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International Classes:
C22C29/06; C22C29/08; H01B1/02; H01H1/02; H01H1/021; H01H11/04; H01H33/66; H01H1/0233



 
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