A homogenisation pre-treatment for adherent and corrosion-resistant Ni electroplated coatings on Mg-alloy AZ91D

Yang, H, Guo, X, Chen, X and Birbilis, N 2014, 'A homogenisation pre-treatment for adherent and corrosion-resistant Ni electroplated coatings on Mg-alloy AZ91D', Corrosion Science, vol. 79, pp. 41-49.


Document type: Journal Article
Collection: Journal Articles

Title A homogenisation pre-treatment for adherent and corrosion-resistant Ni electroplated coatings on Mg-alloy AZ91D
Author(s) Yang, H
Guo, X
Chen, X
Birbilis, N
Year 2014
Journal name Corrosion Science
Volume number 79
Start page 41
End page 49
Total pages 9
Publisher Elsevier
Abstract Multi-step Ni electroplatings were applied to AZ91D following the development of a homogenisation pre-treatment. The Ni coating was well adhered, as verified by thermal shock testing, and provided corrosion protection in 3.5. wt.% NaCl for 74. h at a coating thickness of ~15. μm. Being a cathodic coating, further protection in the presence of defects was not demonstrated herein, however realisation of quality Ni coatings on Mg is technologically important. To this end, achieving microstructural homogeneity on AZ91D is critical prior to plating or coating (such as electroless plating and chemical conversion coating) multi phase Mg-alloys.
Subject Materials Engineering not elsewhere classified
Keyword(s) A. Magnesium
A. Metal coatings
A. Nickel
A. Zinc
B. Polarisation
C. Electrodeposited films
DOI - identifier 10.1016/j.corsci.2013.10.024
Copyright notice © 2013 Elsevier Ltd.
ISSN 0010-938X
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