目的 在化学镀Ni-Mo-P-PTFE的工艺基础上向镀液中加入稀土铈，确定当Ni-Mo-P-PTFE镀层的沉积速率达到最大、组织结构最优、PTFE含量最高和防垢性能最好时稀土铈的浓度。方法 制备Ni-Mo- P-PTFE复合镀层，在镀液中分别添加不同含量的稀土铈。通过金相显微镜、X射线能谱仪、X射线衍射仪、电子显微镜、电子天平等对复合镀层成分和结构进行表征，确定稀土铈诱导共沉积Ni-Mo-P-PTFE复合镀层的最佳工艺。结果 随着镀液中稀土铈浓度的添加，复合镀层的沉积速率呈现先增后减的趋势，同时促进了镀层由晶态向非晶态结构的转变。PTFE的含量在加入稀土铈后有明显的提高，呈现先增后减的趋势。镀层的结垢率也随硫酸铈的加入而降低，在硫酸铈为0.04 g/L时达到最低值0.656 g/m2，此质量浓度镀层的防垢性能最佳。结论 当硫酸铈质量浓度为0.04 g/L时，PTFE粒子沉积速率达到最大，为28.214 μm/h，PTFE粒子体积分数达到40.43%，同时具有最好的阻垢性能。综合考虑，制备Ni-Mo-P-PTFE复合镀层时，最佳的稀土铈质量浓度为0.04 g/L。

The work aims to determine the concentration of rare earth cerium by adding rare earth cerium into the bath on the basis of electroless Ni-Mo-P-PTFE plating process when the deposition rate of Ni-Mo-P-PTFE coating is the maximum, the mi-crostructure is optimal, the PTFE content is the highest and the scale resistance is the best. Ni-Mo-P-PTFE composite coating was prepared, and different contents of rare earth cerium were added to the bath. The composition and structure of Ni-Mo-P-PTFE composite coating were characterized by metallographic microscope, energy dispersive X-ray spectrometer, X-ray diffraction, electron microscope and electronic balance. The optimum process of rare earth cerium-induced co-deposition of Ni-Mo-P-PTFE composite coating was determined. The deposition rate of the composite coating increased first and then decreased with the addition of rare earth cerium concentration in the bath, and promoted the transformation of the coating from crystalline state to amorphous state. The content of PTFE increased obviously after rare earth cerium was added and increased first and then decreased. The fouling rate of the coating also decreased with the addition of cerium sulfate and then reached the lowest value of 0.656 g/m2 at 0.04 g/L, and the anti-fouling performance of the coating was the best. When the concentration of cerium sulfate is 0.04 g/L, the deposition rate reaches the maximum value of 28.214 μm/h, the volume fraction of PTFE particles reaches 40.43% and the best anti-fouling performance is obtained. For overall consideration, the best cerium concentration to prepare Ni-Mo-P-PTFE composite coating is 0.04 g/L.