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采用化学镀的方法,调整化学镀工艺参数,在低碳钢表面获得了PTFE含量不同的Ni-Cu-P-PTFE镀层,研究了PTFE粒子对Ni-Cu-P-PTFE镀层表面形貌、相、显微硬度、结合强度以及摩擦等性能的影响。结果表明,Ni-Cu-P-PTFE镀层的沉积速度随着PTFE浓度的增加而升高。进一步的实验结果表明,由于PTFE颗粒自身的疏松结构和软质特性,PTFE颗粒在镀层中的共沉积会引起Ni-Cu-P-PTFE镀层的显微硬度下降。同时Ni-Cu-P-PTFE镀层的结合强度会随着PTFE浓度的增加而减小。此外,PTFE的添加会使Ni-Cu-P-PTFE镀层的摩擦系数降低,这些结果与PTFE粒子在Ni-Cu-P-PTFE镀层中的含量成反比,而与镀液中PTFE粒子的浓度没有良好的对应关系。
The electroless plating method was used to adjust the parameters of electroless plating. The Ni-Cu-P-PTFE coatings with different PTFE contents were obtained on the surface of mild steel. The effects of PTFE particles on the surface morphology, , Microhardness, bonding strength and friction and other properties. The results show that the deposition rate of Ni-Cu-P-PTFE coating increases with the increase of PTFE concentration. Further experimental results show that due to the loose structure and soft nature of the PTFE particles, the co-deposition of PTFE particles in the coating causes a decrease in the microhardness of the Ni-Cu-P-PTFE coating. At the same time, the bonding strength of Ni-Cu-P-PTFE coating decreases with the increase of PTFE concentration. In addition, the addition of PTFE lowers the coefficient of friction of the Ni-Cu-P-PTFE coating. These results are inversely proportional to the content of PTFE particles in the Ni-Cu-P-PTFE coating, Good correspondence.