Patent ID: 6024896
Filing Date: 2000-02-15
Classification: C22C,H01H

Abstract:
A contacts material, comprising:a silver-tungsten carbide alloy containing 55 weight % to 70 weight % of tungsten carbide of a mean particle size of 0.1 .mu.m to 6 .mu.m, wherein 0.005 weight % to 0.2 weight % of carbon particles of equivalent diameter from 0.01 to 5 .mu.m are present in an undissolved state or non-compound-forming state;said carbon being highly dispersed and distributed through said silver-tungsten carbide alloy and the carbon particles being separated by an average distance not less than the size of adjacent carbon particles; andthe average roughness (Rave) of a contact surface of said contacts material being within the range of 0.05 .mu.m to 10 .mu.m.