Abstract—Nano composite Cr–WC coatings are widely used in different industries due to the favorite charac teristics such as high wear and corrosion resistance. In this article, at the first time the nano composite CrWC coatings are produced via square and direct current in Watts’ deposition bath containing tungsten carbide particles of 70 nm diameters. And then the effects of applied current to deposition on the size of tungsten car bide particles, distribution in the coating, homogeneity, hardness and the coatings wear ratio are investigated. The morphology of coating is studied by scanning electron microscope (SEM). The weight percentage of the tungsten carbide particles and the coatings hardness are determined by EDX composite analysis and Vickers micrometer ingressive hardness system respectively. The results reveal that the amounts of nano particles and homogeneous distribution in the pulse current coating are more than direct current. The coating wear behav ior and homogeneity of thickness in pulse current are better than direct current
