热处理对Ni-P化学镀层阻垢和耐蚀性能的影响

he effect of heat treatment temperature on the microstructural evolution of electroless plated Ni-P coatings was investigated using X-ray diffraction (XRD) analysis. The results showed that the as plated electroless Ni-P coating is amorphous. After heat treatment at 350 , Ni-P coatings turn into crystalline state, while Ni3P phase appeared at 400 . With the increasing heat treatment temperature, the Ca2 + atomic percentage of the formed fouling scales reduced firstly at 300 , and then increased at 350 and 400 . After heat treatment at 300 , the internal stress and hydrogen embrittleness of the coating was eliminated, thereby, the anti- fouling performance and corrosion resistance of the coating was enhanced.