A Research on Laser Remelted Nano Ni Coating

The basic principle of jet-electroplating is presented.The nanocrystalline nickel coating was prepared by a(self-designed) and made jet-electroplating system,and the coating was further processed by laser remelting.The impact of current density on coating microstructure and macro-property under direct and pulse current power source,and the impact of laser remelting on coating morphology were especially studied.The changes of the metal matrix,jet-electroplating and laser remelt coatings in microhardness were investigated.The results indicate that compared with the metal matrix,the coating prepared by jet-electroplating is obviously improved,and further improved after laser remelting in microhardness.