Effects of copper and manganese cations on cerium-based conversion coating on galvanized steel: Corrosion resistance and microstructure characterizations,Journal of Rare Earths

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Effects of copper and manganese cations on cerium-based conversion coating on galvanized steel: Corrosion resistance and microstructure characterizations
Journal of Rare Earths ( IF 5.2 ) Pub Date : 2021-07-28 , DOI: 10.1016/j.jre.2021.07.015
Farzaneh Khast ₁ , Mesbah Saybani ₂ , Ali Asghar Sarabi Dariani ₃

Affiliation

The cerium conversion coating (CeCC) containing copper and manganese cations was applied to the galvanized steel. The microstructure and the composition of specimen were analyzed by field emission scanning electron microscopy (FE-SEM) and energy dispersive spectroscopy (EDS). Electrochemical impedance spectroscopy (EIS) and polarization tests were conducted in 3.5 wt% NaCl solution to investigate the coating corrosion resistance. The results show that there are improvements in corrosion resistance and microstructure of CeCC containing copper and manganese cations but copper ions increase corrosion resistance of CeCC from 5800 to 27000 Ω⋅cm².

中文翻译：

铜和锰阳离子对镀锌钢铈基转化涂层的影响：耐腐蚀性和微观结构表征

将含有铜和锰阳离子的铈转化涂层 (CeCC) 施加到镀锌钢上。采用场发射扫描电子显微镜（FE-SEM）和能谱仪（EDS）对试样的微观结构和成分进行分析。在 3.5 wt% NaCl 溶液中进行电化学阻抗谱 (EIS) 和极化测试以研究涂层的耐腐蚀性。结果表明，含铜和锰阳离子的CeCC的耐腐蚀性能和微观结构都有所提高，但铜离子使CeCC的耐腐蚀性能从5800 Ω·cm 2 提高到27000 Ω·cm ²。

更新日期：2021-07-28

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