Electrodeposition of Zn-Ni coatings as Cd replacement for corrosion protection of high strength steel

被引：127
作者：
Conde, A. [1 ]
Arenas, M. A. [1 ]
de Damborenea, J. J. [1 ]
机构：
[1] CSIC, CENIM, Dpto Corros & Protecc, Madrid 28040, Spain
来源：
CORROSION SCIENCE | 2011年 / 53卷 / 04期
关键词：
Zinc; Nickel; Polarization; XRD; Hydrogen embrittlement; Electrodeposited films; ZINC-NICKEL-ALLOY; SULFATE BATH; P ALLOYS; RESISTANCE; BEHAVIOR; MICROSTRUCTURE; DEPOSITS;
D O I：
10.1016/j.corsci.2011.01.021
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electrodeposition of Zn-Ni coatings performed in acidic baths are not suitable for high strength steels due to their high susceptibility to hydrogen embrittlement. In this work, Zn-Ni coatings were deposited on a high strength steel (4340) upon stirring conditions from an alkaline bath. A complete characterisation of the coatings (corrosion, morphology and composition) has been accomplished, correlating the electrodeposition conditions with these features. The best protective properties of the grown coatings were achieved for the alloys with a single phase structure of gamma-Ni5Zn21 and a denser morphology. Additionally, the hydrogen content incorporated is lower than even cadmium-coated 4340 steel which has undergone a postbaking dehydrogenation treatment. (c) 2011 Elsevier Ltd. All rights reserved.
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收藏
页码：1489 / 1497
页数：9
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