电流密度对Zn-Ni-PTFE复合镀层组织结构和耐蚀性的影响  

Effect of current density on microstructure and corrosion resistance of Zn-Ni-PTFE composite coating

作　　者：刘嘉楠 黄嘉乐 阳颖飞 张鹏 陈德馨 王启伟 LIU Jia’nan;HUANG Jiale;YANG Yingfei;ZHANG Peng;CHEN Dexin;WANG Qiwei(Institute of Advanced Wear&Corrosion Resistant and Functional Material,Jinan University,Guangzhou 510632,China)

机构地区：[1]暨南大学先进耐磨蚀及功能材料研究院,广东广州510632

出　　处：《电镀与涂饰》2022年第19期1345-1350,共6页Electroplating & Finishing

基　　金：国家重点研发计划(2018YFB2002000);广东省基础与应用基础研究基金(2021B1515120014);防城港市科学研究与技术开发计划项目(防科AB21014008)。

摘　　要：采用氯化物体系镀液在不同电流密度下以脉冲电沉积制备了Zn-Ni-PTFE复合镀层。通过扫描电镜(SEM)、能谱(EDS)、X射线衍射(XRD)和电化学测试研究了电流密度对Zn-Ni-PTFE复合镀层微观形貌、成分、物相和耐蚀性的影响。结果表明,电流密度为2.5 A/dm^(2)时所得Zn-Ni-PTFE复合镀层厚度约30.9μm,PTFE在镀层内部均匀分布,其耐蚀性较佳。Zn-Ni-PTFE composite coatings were prepared by pulse electrodeposition in chloride bath at different current densities. The effect of current density on the micromorphology, elemental composition, phase structure, and corrosion resistance of Zn-Ni-PTFE composite coating was studied by scanning electron microscopy(SEM), energy-dispersive spectroscopy(EDS), X-ray diffractometry(XRD), and electrochemical test, respectively. The results showed that the Zn-Ni-PTFE composite coating electrodeposited at a current density of 2.5 A/dm^(2) featured a thickness of 30.9 μm, uniform distribution of PTFE particles therein, and excellent corrosion resistance.

关 键 词：锌-镍合金 聚四氟乙烯 复合镀层 脉冲电沉积 电流密度 组织结构 耐蚀性 

分 类 号：TQ153.2[化学工程—电化学工业]