The effect of an electric arc on the microstructure of composite Cu-Cr, Cu-W, Cu-Cr-W alloys, obtained after vibrational reactive infiltration of powders by copper melt

Abstract

Alloys Cu–Cr, Cu–W, Cu–Cr–W (≥ 50 wt.% Cu) were obtained by infiltration of Cr, W uncompacted powders or their mixtures by copper melt. After electric erosion tests of the obtained alloys, a comparative analysis of the changes in the microstructure was carried out. The expediency of completely or partially replacing of W with Cr for electric contact materials is shown.