Phase Composition, Structure, and Wear Resistance of Electric-Explosive CuO–Ag System Coatings after Electron Beam Processing

Abstract

Electroerosion-resistant CuO–Ag system coatings are obtained via electric explosive spraying and subsequent electron beam processing for the first time. The coatings are a structurally homogeneous composite material consisting of a silver matrix with copper oxide inclusions. The CuO–Ag system coatings have a wear resistance more than 300% greater than that of copper. The basis of the structural formation of the CuO–Ag system electric-explosive coating is the dynamic rotation of sprayed particles that form a hierarchically organized vortex structure in both the coating and in the upper layers of the substrate, including their interface.