The influence of pH on the corrosion rate of high-purity Mg, AZ91 and ZE41 in bicarbonate buffered Hanks' solution

Johnston, Sean, Shi, Zhiming and Atrens, Andrej (2015) The influence of pH on the corrosion rate of high-purity Mg, AZ91 and ZE41 in bicarbonate buffered Hanks' solution. Corrosion Science, 101 182-192. doi:10.1016/j.corsci.2015.09.018


Author Johnston, Sean
Shi, Zhiming
Atrens, Andrej
Title The influence of pH on the corrosion rate of high-purity Mg, AZ91 and ZE41 in bicarbonate buffered Hanks' solution
Journal name Corrosion Science   Check publisher's open access policy
ISSN 0010-938X
1879-0496
Publication date 2015-12-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.corsci.2015.09.018
Open Access Status Not yet assessed
Volume 101
Start page 182
End page 192
Total pages 11
Place of publication Oxford, United Kingdom
Publisher Elsevier
Collection year 2016
Language eng
Formatted abstract
Corrosion of high purity (HP) Mg, AZ91 and ZE41, was studied in CO2-bicarbonate buffered Hanks' solution, using mass loss and hydrogen evolution. Corrosion rates were in the following decreasing order: ZE41 > HP Mg > AZ91. Corrosion rates of ZE41 were much higher than those of the other Mg alloys. HP Mg and AZ91 had comparable corrosion rates, but HP Mg corroded more quickly. All corrosion rates decreased slightly with increasing pH, attributed to more stable protective films. A slow fluid flow caused a slightly higher corrosion rate and a more-uniform corrosion morphology for all Mg alloys.
Keyword A. Magnesium
B. Weight loss
B. SEM
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2016 Collection
 
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