Effects of Zr(Ⅳ)on the surfacue morphology and anticorrosion performance of trivalent chromium based conversion coating on zinc

摘要：

　　The trivalent chromium based conversion coating on zinc,based on chromium sulfate with Zr(Ⅳ) ions.The corrosion resistance of trivalent chromium passivation coating, measured in 3.5 wt% NaC1solution using anodic polarization and electrochemical impedance spectroscopy (EIS), was sensitive to immersion time.A modified equivalent circuit obtained from EIS analysis, could explain the corrosion behavior of the trivalent chromium passivation coating on zinc.Results showed that Zr(Ⅳ) ions can improve significantly the corrosion resistance on zinc.It was revealed the Zr(IⅣ) can improve corrosion resistance of trivalent chromium passivation coating.

关键词： trivalent chromium passivation corrosion resistance EIS analysis equivalent circuit

作者: Shuting Miao Jianzhong Jiang Sheng Han Lifeng Hao Jun Zhu

会议类型: 国内会议

会议名称: 2013年海峡两岸(上海)电子电镀及表面处理学术交流会

会议地点: 上海

会议语种:英文

页码: 405-416

在线出版日期: 2013-11-17（万方平台首次上网日期，不代表论文的发表时间）