Improving the Properties of Ni-ZrO2 Composite Coatings by Sol-Enhanced Electroplating

Chao Xiong, School of Electrical and Photoelectronic Engineering, Changzhou Institute of Technology, Changzhou, 213032, China
2018 International Journal of Electrochemical Science  
ZrO 2 powder has been used as a second phase in metal coatings which can significantly improve the wear resistance of composite coatings. By using newly developed sol-enhanced electroplating method, Ni-ZrO 2 composite coating has been deposited on mild steel samples. The microstructure, hardness and wear property of sol-enhanced electroplated a Ni-ZrO 2 composite coatings with different ZrO 2 sol concentration were analyzed using SEM, XRD, micro-hardness and wear tests. The effect of ZrO 2 sol
more » ... ffect of ZrO 2 sol concentration on the surface morphology, microstructure and mechanical property of electroplated coatings was discussed and compared with Ni-ZrO 2 composite coatings prepared by adding ZrO 2 powder. It was found that incorporation of ZrO 2 sol improves the mechanical property of Ni coatings in composite coatings. Compared with the traditional ZrO 2 powder method, Sol-enhanced method has better enhancement effect. The mechanical properties of Ni-ZrO 2 coatings reach the optimum value when the ZrO 2 sol concentration is 15 ml/L.
doi:10.20964/2018.11.97 fatcat:5oig7osbdvcfnka6zwk6mlbe5i