铜掺杂Ni-P-PTFE涂层的微观结构、耐蚀性和力学性能

Microstructures,corrosion resistance and mechanical properties of Ni-Cu-P-PTFE composite coatings

研究了铜的掺杂量对化学镀Ni-Cu-P-PTFE复合涂层的微观结构、耐蚀性和力学性能的影响。利用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、电化学工作站、纳米压痕仪、HSR-2M摩擦磨损试验机分别对NiCu-P-PTFE复合涂层的微观结构、耐蚀性和力学性能进行表征和测试。结果表明,铜的掺杂对Ni-P-PTFE复合涂层的成分、微观结构、耐蚀性和力学性能都具有较大的影响,随着镀液中Cu^(2+)浓度的增加,涂层中Cu含量先增加后下降,而Ni、P和PTFE含量则先下降后增加;随着涂层中掺杂Cu含量的增加,Ni-Cu-P-PTFE涂层的耐蚀性和硬度得到改善,但其摩擦性能降低。

The effects of Cu addition on the microstructure,corrosion resistance and mechanical properties of NiP-PTFE composite coatings were studied in this paper.The microstructure,corrosion resistance and mechanical properties of the coatings were investigated by scanning electron microscopy（SEM）,X-ray diffraction（XRD）,electrochemical workstation,nano-indenter,and friction wear testing machine,respectively.The results show that Cu addition has great influence on the composition,microstructure,corrosion resistance and mechanical properties of Ni-P-PTFE composite coating.With the increase of Cu^（2＋） concentration in the plating solution,Cu content in the coating first increased and then decreased,while the content of Ni,P,and PTFE first decreased and then increased.With the increase of Cu content in the coating,the corrosion resistance and hardness of NiCu-P-PTFE composite coatings improved,while the friction performance decreased.