Interfacial study of the formation mechanism of corrosion resistant strontium phosphate coatings upon Mg-3Al-4.3Ca-0.1Mn

Ke, C, Song, M, Zeng, R, Qiu, Y, Zhang, F, Zhang, R, Liu, R, Cole, I, Birbilis, N and Chen, X 2019, 'Interfacial study of the formation mechanism of corrosion resistant strontium phosphate coatings upon Mg-3Al-4.3Ca-0.1Mn', Corrosion Science, vol. 151, pp. 143-153.


Document type: Journal Article
Collection: Journal Articles

Title Interfacial study of the formation mechanism of corrosion resistant strontium phosphate coatings upon Mg-3Al-4.3Ca-0.1Mn
Author(s) Ke, C
Song, M
Zeng, R
Qiu, Y
Zhang, F
Zhang, R
Liu, R
Cole, I
Birbilis, N
Chen, X
Year 2019
Journal name Corrosion Science
Volume number 151
Start page 143
End page 153
Total pages 11
Publisher Pergamon Press
Abstract Strontium phosphate (SrPO4) conversion coatings with the ability to impart significant corrosion resistance were prepared upon magnesium alloy Mg-3Al-4.3Ca-0.1 Mn (wt.%). Scanning electron microscopy equipped with energy dispersive spectroscopy and transmission electron microscopy were also employed to characterise surface and interfacial morphology, along with the composition of the coatings. The protective performance of SrPO4 coatings was examined by potentiodynamic polarisation curves and immersion testing. A coating-growth mechanism was proposed and correlations between processing parameters and coating quality was established. The findings herein provide new insights for design of environmentally-benign and corrosion resistant coatings upon magnesium alloys through a simple chemical conversion technique.
Subject Metals and Alloy Materials
Keyword(s) A. Magnesium
B. SEM
B. TEM
C. Interfaces
C. Passive film
DOI - identifier 10.1016/j.corsci.2019.02.024
Copyright notice © 2019 Elsevier
ISSN 0010-938X
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