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

被引：14
作者：
Khast, Farzaneh [1 ]
Saybani, Mesbah [2 ]
Dariani, Ali Asghar Sarabi [3 ]
机构：
[1] Amirkabir Univ Technol, Corros Engn & Mat Protect Grp, Bandar Abbas Campus, Tehran, Iran
[2] Amirkabir Univ Technol, Dept Maritime Engn, Tehran, Iran
[3] Amirkabir Univ Technol, Dept Color & Polymer Engn, Tehran, Iran
来源：
JOURNAL OF RARE EARTHS | 2022年 / 40卷 / 06期
关键词：
Conversion coating; Galvanized steel; EIS; Copper; Manganese; Rare earths; PERFORMANCE; ALLOY; ACID;
D O I：
10.1016/j.jre.2021.07.015
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
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 Omega center dot cm(2). (c) 2021 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths.
引用
收藏
页码：1002 / 1006
页数：5
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