电沉积制备铜-锡-PTFE自润滑复合镀层工艺参数对其性能的影响  

Effect of Process Parameters during Preparating Cu-Sn-PTFE Self-Lubricant Composite Coating by Electrodeposition Method on Its Properties

作　　者：黄志荣[1] 李攀瑜[1] 

机构地区：[1]华东理工大学机械与动力工程学院,上海200237

出　　处：《机械工程材料》2011年第11期78-81,共4页Materials For Mechanical Engineering

基　　金：上海市科委资助项目(09dzl203000)

摘　　要：用复合电沉积法在不锈钢基体上制备铜-锡-PTFE自润滑复合镀层,并用扫描电子显微镜、能谱仪、摩擦磨损试验机等研究了十六烷基三甲基溴化胺(CTAB)及PTFE的加入量、电流密度、沉积温度等工艺参数对复合镀层组成和性能的影响。结果表明:镀层中PTFE的含量随镀液中CTAB及PTFE加入量增加而增大,当加入量分别达到0.3 g·L^(-1)和36 g·L^(-1)时PTEE的含量最大;随电流密度的增大,镀层中PTFE含量增加,超过3 A·dm^(-2)后其含量下降;适宜的沉积温度为50～55℃;复合镀层显微硬度随镀层中PTFE含量增加而降低,当镀液中PTFE质量浓度为36 g·L^(-1)时镀层摩擦因数最低,为0.09。The self-lubricant composite coating of Cu-Sn-PTFE was prepared on stainless steel substrate by electrodeposition method. The effects of process parameters of CTAB and PTFE content, current density and deposition temperature on composition and properties of composite coating were studied by scanning electron microscopy, energy disperse spectroscopy and abrasion testing machine. The results show that PTFE content in composite coating increased with increase of CTAB and PTFE in plating bath, and its content was maximum when CTAB and PTEE reached 0. 3 g · L ^-1 and 36 g · L^-1 respectively. PTFE content increased with increase of current density and then decreased after current density was over 3 A · dm^-2. The microhardness of the composition coating decreased with increase of PTFE content in composite coating. The lowest friction coefficient of coating was 0. 09 when the mass concentration of PTFE in plating bath was 36 g · L^-1.

关 键 词：电沉积 Cu-Sn-PTFE复合镀层 自润滑 电流密度 

分 类 号：TQ153.4[化学工程—电化学工业]