Study on Wear-resisting Property of Nickel-diamond Composite Electroforming Films in Supercritical Fluids

摘要

Ni-diamond nano-composite electroforming films were prepared in supercritical fluids. The effect of process parameters to wear-resisting property of composite electroforming films was analyzed by orthogonal tests, which included current density, working time, diamond content and working pressure. It has been found that the composite electroforming films prepared in supercritical CO_2 fluids have spherical crystallization with refined crystalline grain and small internal stress. Then it can be found that the wear-resisting property of supercritical electroforming films is far higher than that of conventional electroforming by detecting the wear scar cross-sectional area, and the wear-resisting property increased by 18.8%.