化学复合镀Ni–P–PTFE的镀速及镀层摩擦学性能研究  

Study on deposition rate and tribological properties of electrolessly plated Ni–P–PTFE composite coating

作　　者：王柳斌 赵永武 

机构地区：[1]江南大学机械工程学院,江苏无锡214122

出　　处：《电镀与涂饰》2009年第3期17-20,共4页Electroplating & Finishing

基　　金：教育部重点项目(教外字[2006]233号);江苏省自然科学基金(BK2004020);教育部回国人员启动基金(教外字留[2004]527号);清华大学摩擦学国家重点实验室开放基金(SKLT04-06)

摘　　要：在45#钢上化学镀Ni—P-PTFE复合镀层，其工艺流程主要包括化学机械抛光、碱性除油、活化、化学镀和干燥。研究了主盐和还原剂质量浓度、pH、温度以及PTFE体积分数对镀速的影响。观察了Ni—P-PTFE镀层的表面形貌，测试了镀层的摩擦学性能。结果表明：当工艺条件为25g/L硫酸镍、30g/L次磷酸钠、10mL／LPTFE、pH4．6和温度（92±2）℃时，镀速最佳，镀层的摩擦因数在0．16～0．20之间，具有优良的耐磨性能。A Ni-P-PTFE composite coating was prepared on 45 steel. The process flow includes chemo-mechanical polishing, alkaline degreasing, activating, electroless plating, and drying. The effects of the mass concentrations of main salt and reducing agent, pH, temperature and PTFE volume fraction on deposition rate were studied. The surface morphology of the Ni-P-PTFE composite coating was observed and its tribological properties were tested. The results showed that the optimal deposition rate was obtained ± 2） ℃ and pH 4.6. The composite coating has a friction factor ranging from 0.16 to 0.26, showing good wear resistance.

关 键 词：镍—磷合金 聚四氟乙烯 化学复合镀 镀速 摩擦因数 耐磨性 

分 类 号：TQ153[化学工程—电化学工业]