Effect of Phosphorus Content on Performance of Ni-based Alloy Composite Coatings

Using high-speed steel as basis material,Ni-based alloy composite coatings with different P contents were prepared by electroless plating.The results of SEM showed that the alloy coating was cellular structure.The content of P was 10.94% in high P coating,the grains were homogencous and small in volume.The content of P was 3.15% in low P coating,the grains had comparatively large volume.According to the analysis of X-ray diffraction,the high P coating was uncrystalline structure,while the low P coating was crystalline.The microhardness and wear resistance of the coatings was significantly improved than the basis material.