Cr_3C_2-25%NiCr and WC-25%NiCr metal-ceramic coating have a broad prospect with a good wear resistance, anti-oxidation performance under high temperature. This paper takes Cr_3C_2-25%NiCr and WC-25%NiCr powders as spraying materials. Coating is prepared by regulating the spraying voltage, current and the main gas flow rate based on orthogonal analysis. The effect regularities of the spray parameters, and the structures, properties and abrasion resistance of the coating is analyzed. The wear mechanis...