In order to enhance the corrosion and wear resistance of electroless plating Ni-W-P coating and broaden its application, in this paper an optimizing orthogonal test has been applied. The processing parameters have been optimized and some Ni-W-P coatings have been obtained with smooth and glittering appearance. The porosity of Ni-W-P coating (20|jm) ranked class 9. The stability of solution was doubled, and the changing color time of the coating surface corrosion resistance is more than 2000 second with HNO3 dropping on. The hardness of layer is obviously improved by the Nano test 600 equipment. Furthermore the salt spray resistance of the layers can be up to 1000h with the thickness 30um. By means of X-ray diffraction it can be proved that coatings' microstructure is amorphous phase. The surface appearance of deposition is typical lamerllar-like cells by SEM, which ranks close and neatly. The corrosion and wear resistance of optimized Ni-W-P coatings is better than Ni-P's. Due to its remarkable corrosion resistance and processing properties, the electroless Ni-W-P plating must be widely used in various fields. electroless plating; Ni-W-P; corrosion resistance; wear resistance
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