为了制备具有优异耐腐蚀性能的复合镀层,试验采用双脉冲电源,在Q235半潜平台结构件表面沉积Ni-Si C纳米复合镀层,采用浸泡腐蚀试验,研究了工艺参数对复合镀层的耐腐蚀性的影响。试验得出复合镀层的腐蚀失重随镀液中纳米Si C颗粒浓度的增加而增加,随电流密度的增加而增加,且采用双脉冲镀的复合镀层耐腐蚀性能更好。 In order to prepare a composite coating with excellent corrosion resistance, a double pulse power source was used to deposit Ni-Si C nanocomposite coating on the Q235 semi-submersible platform. The corrosion resistance of the composite coating by process parameters was studied by immersion corrosion test Impact. The results show that the corrosion loss of the composite coating increases with the increase of the concentration of nano-Si C particles in the plating solution, increases with the increase of the current density, and the corrosion resistance of the composite coating by double pulse plating is better.