Ni-P-SiC composite coatings electroplated on carbon steel assisted by mechanical attrition

Ni-P-SiC composite coatings were electroplated on carbon steel substrate assisted by mechanical attrition(MA).The MA action was conducted by dispersing glass balls on the cathodic surface,vibrating in the horizontal direction.The experimental results show that,under the assistant of MA action,the adhesion of Ni-P-SiC coating on the steel substrate can be improved effectively,and the Ni-P-SiC coatings exhibit a crystallized structure and Ni-P matrix can combine tightly with SiC particles,and the hardness and corrosion resistance of these coatings increase markedly.During heat treatment,the defects produced in conventional Ni-P-SiC composite coatings can be avoided assisted by MA action.Both of the wear resistance and corrosion resistance of these coatings can be improved further.