The intermediate layer was prepared by nickel doped with WC particles electroplating. The parameters,including current density and temperature, were studied. The measured methods, which consisted of surface roughometer and SEM, were used to character the roughness and micrograph. Based on the results, it was shown that the optimized parameters of the composite were as follows, temperature 65 ℃, current density 5 A/dm2 and pH 6.5.In the range of optimized parameters, the roughness Ra was from 4.5 to 6.7 μm. From the SEM micrograph, the particles on the surface were well distributed. The nickel content, which affected the binding force, was determined by the electroplating time.
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