Study on the Process of Ni-P-SiC Composite Electroless Plating

The process of Ni P SiC composite electroless plating has been developed on the aluminum alloy surface. With scanning electromicroscope, spectrometer and microhardometer,the authors analyze synthetically the surface condition , microscopic structure and properties of the composite electroless plating. The results show that with the increase in the quantity of SiC particles in bath, the SiC particles in the composite plating gradually increase and they are evenly distributed throughout the matrix of electroless Ni-P alloy.The authors find out the best SiC additive quantity by a series of experiments. At the same time, a contrastive study is given to the pre process of aluminium alloy. As a result, the pre process of composite electroless plating on the aluminium alloy surface is simplified.