Review of Mg alloy corrosion rates

A review of the literature confirmed that the intrinsic corrosion rate of high-purity Mg as measured by weight-loss is 0.3 mm/y in a concentrated chloride solution. Atmospheric corrosion of Mg alloys has produced corrosion rates of Mg-Al alloys an order of magnitude lower than the intrinsic corrosio...

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Bibliographic Details
Published in:Journal of magnesium and alloys 2020-12, Vol.8 (4), p.989-998
Main Authors: Atrens, Andrej, Shi, Zhiming, Mehreen, Syeda U., Johnston, Sean, Song, Guang-Ling, Chen, Xianhua, Pan, Fusheng
Format: Article
Language:English
Subjects:
A, magnesium
B, weight loss
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Polarization
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Summary:A review of the literature confirmed that the intrinsic corrosion rate of high-purity Mg as measured by weight-loss is 0.3 mm/y in a concentrated chloride solution. Atmospheric corrosion of Mg alloys has produced corrosion rates of Mg-Al alloys an order of magnitude lower than the intrinsic corrosion rate of Mg in a concentrated chloride solution of 0.3 mm/y. The only successful strategy to produce a Mg alloy with a corrosion rate in a concentrated chloride solution substantially less than the intrinsic corrosion rate as measured by weight loss of Mg of 0.3 mm/y has been to improve the protectiveness of the corrosion product film.
ISSN:2213-9567
2213-9567
DOI:10.1016/j.jma.2020.08.002