Study on Ni-P-(Ni/SiC)_P Electroless Composite Coatings

In order to decrease the high cost of applications of naked(SiC)P,(SiC)P was surface-modified to(Ni/SiC)P by a simple electroless plating,then(Ni/SiC)P particles were incorporated into the Ni-P plating solution to prepare Ni-P-(Ni/SiC)P electroless composite coatings.The microstructure and properties of the Ni-P-(Ni/SiC)P electroless composite coatings were investigated by metallographic microscope,scanning electronic microscope(SEM),energy dispersive spectrum(EDS) and micro-sclerometer.Compared with the Ni-P coatings and the Ni-P-(SiC)P coatings,the results show that the Ni-P-(Ni/SiC)P electroless composite coatings has many merits such as the homogenous composition,thick coatings,high hardness and good wear-resisting properties,etc.The electroless plating method is very simple and the cost is very low,which may be avail to the further research of(SiC)P reinforced the alloy coating and metal matrix composite.