Comparative Study on the Compression Sintering Performance of Different Kinds of Copper-Chromium Powder Applied to Electrical Contact Materials

Abstract In this paper, the pressing and sintering properties of three kinds copper-coated chromium composite powder copper-chromium mechanical mixed with same copper content were compared studied. The was prepared by a diffusion method, liquid electroless plating method an added binder. results show that increase in content, advantage copper-clad is more obvious. density, hardness, size shrinkage sintered sample are stable. Moreover, uniform distribution Cu Cr can effectively improve composition uniformity electrical contact alloy.