Wear and immersion corrosion of Ni-P electrodeposit in NaCl solution

This paper presents an experimental study on the block-on-cylinder wear behavior of an electroplated Ni-P coating immersed in 5% NaCl solution at different temperatures and polarization potentials. The simply immersion corrosion without normal load was performed first, and then the corrosion effect on the wear behavior including friction coefficient, surface roughness and weight loss were discussed. It is found that the morphology nature of the corrosion film has crucial effect on the wear performance of the coating. Moreover, the bath temperature and the polarization potential greatly influence the formation of the corrosion film.