研究了以灰口铸铁为基体材料的Ni-P化学复合镀。首先探讨了铸铁镀前预处理工艺,其次通过调整镀液成分和镀覆条件,获得了一种比较理想的化学复合镀镀液配方和工艺,最后试验了各种添加粒子的复合镀。结果表明,可在铸铁表面获得高硬度Ni-P化学复合镀镀层。 Ni-P electroless plating with gray cast iron as base material was studied. Firstly, the pretreatment process of cast iron before plating was discussed. Secondly, by adjusting the bath composition and plating conditions, an ideal chemical composite plating bath formulation and process was obtained. Finally, the composite plating with various added particles was tested. The results show that the cast iron can be obtained on the surface of high hardness Ni-P chemical composite plating.