Preparation and Characteristics of Electroless Ni-P-nano-SiC Composite Plating

The preparation technique and performance of the Ni-P-nano-SiC electroless composite coating were studied.The results revealed that the nano-powder dispersion and stability in the plating solution were improved by using the ultrasonic dispersing and anion surfactant to disperse the nano-powder.The nano-powders were dispersed in the electroless composite coating.It decreased the coating porosity and improved its hardness.Compare with Ni-P alloy electroless coating,the corrosion resistance and the wear resistance of electroless composite coating are improved.