期刊
ELECTROCHIMICA ACTA
卷 196, 期 -, 页码 708-726出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.03.027
关键词
Zn-Fe-Mo alloy coating; electrodeposition; EIS; XPS; anodic dissolution
资金
- Polish Ministry of Science and Higher Education [S50150/W03-Z17]
Ternary Zn-Fe-Mo alloy coatings, as a potential replacement for zinc coatings, were deposited from a citrate-sulphate solution. It has been shown that by varying the concentration of Na2MoO4 in the plating bath in a range of 0.0025 - 0.05 mol dm (3) it is possible to obtain coatings containing from 0.4 to 2.7% at. Mo and from 2.8 to 7.6% at. Fe. It has been proved that molybdenum and iron do not form intermetallic phases with zinc. However, at higher Mo and Fe content the presence of oxidized molybdenum compounds in the coatings is possible. Among them the most probably are: FeMoO or Mo5O7(OH)(8). EIS measurements revealed that the ternary Zn-Fe-Mo alloy (7.6% at. Fe, 2.4% at. Mo) coating offer better corrosion resistance during 24 hours of exposure in NaCl solution than the Zn-Fe (1.7% at.) binary coating and pure Zn coating. The good protective properties of Zn-Fe-Mo coatings are due to the presence of a relatively thin (approx. 7 nm) passive layer enriched in molybdenum oxides and hydroxide compounds. (C) 2016 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据