Tribological and electrical properties of dispersion-hardened copper-matrix coating deposited using cold spray

A comparative study of tribological and electrical properties of copper and copper-tungsten coatings obtained by cold spray was conducted. It was shown that the embedment of hardening tungsten particles into copper-matrix coating allows to reduce significantly the specific wear rate of the obtained composite under dry friction conditions. The presence of hardening particles in the copper matrix does not significantly affect the coefficient of friction, wear mechanisms and specific electrical conductivity of the composite coating.