The influence of yttrium (Y) on the corrosion of Mg-Y binary alloys

Liu, Ming, Schmutz, Patrik, Uggowitzer, Peter J., Song, Guangling and Atrens, Andrej (2010) The influence of yttrium (Y) on the corrosion of Mg-Y binary alloys. Corrosion Science, 52 11: 3687-3701. doi:10.1016/j.corsci.2010.07.019


Author Liu, Ming
Schmutz, Patrik
Uggowitzer, Peter J.
Song, Guangling
Atrens, Andrej
Title The influence of yttrium (Y) on the corrosion of Mg-Y binary alloys
Journal name Corrosion Science   Check publisher's open access policy
ISSN 0010-938X
Publication date 2010-11
Sub-type Article (original research)
DOI 10.1016/j.corsci.2010.07.019
Volume 52
Issue 11
Start page 3687
End page 3701
Total pages 15
Editor Burstein, G.T.
Place of publication Oxford, United Kingdom
Publisher Pergamon - Elsevier
Collection year 2011
Language eng
Subject 8612 Fabricated Metal Products
0912 Materials Engineering
E1
Formatted abstract
Corrosion of Mg-Y alloys was studied using electrochemical evaluations, immersion tests and direct observations. There were two important effects. in 0.1 M NaCl, the corrosion rate increased with increasing Y content due to increasing amounts of the Y-containing intermetallic. In 0.1 M Na2SO4, the corrosion rate decreased with increasing Y content above 3%, attributed to a more protective surface film, despite the intermetallic. The corrosion rate evaluated by electrochemical impedance spectroscopy was somewhat smaller than that evaluated from H evolution as expected from the Mg corrosion mechanism. A mechanism is proposed for filiform corrosion. Direct in situ corrosion observations revealed that a predominant feature was hydrogen evolution from particular parts of the alloy surface.
© 2010 Elsevier Ltd.
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 2011 Collection
ERA 2012 Admin Only
 
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Created: Wed, 17 Nov 2010, 12:43:26 EST by Sally Beard on behalf of School of Mechanical and Mining Engineering