Microstructure and phase evolution during the dealloying of bi-phase Al-Ag alloy

Song, T. T., Gao, Y. L., Zhang, Z. H. and Zhai, Q. J. (2013) Microstructure and phase evolution during the dealloying of bi-phase Al-Ag alloy. Corrosion Science, 68 256-262. doi:10.1016/j.corsci.2012.11.027


Author Song, T. T.
Gao, Y. L.
Zhang, Z. H.
Zhai, Q. J.
Title Microstructure and phase evolution during the dealloying of bi-phase Al-Ag alloy
Journal name Corrosion Science   Check publisher's open access policy
ISSN 0010-938X
1879-0496
Publication date 2013-03-01
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.corsci.2012.11.027
Volume 68
Start page 256
End page 262
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Collection year 2013
Language eng
Formatted abstract
The chemical dealloying of bi-phase Al-35Ag alloy has been investigated within the parting limit. The dealloying of α-Al(Ag) and Ag2Al commenced simultaneously, and all α-Al(Ag) and part of Ag2Al were dealloyed, leaving residual Ag2Al to be dealloyed afterwards. The dealloying of the residual Ag2Al is associated with vacancy controlled mechanism and diffusion of Al atoms. It is revealed that the diffusions of the Al and Ag atoms during dealloying are significant. The Ag skeletons formed at the initial stage, and became coarsened gradually with a time dependence of d ∝ t2/5, illustrating the vital role of diffusion of Ag atoms.
Keyword Silver
Alloy
Potentiostatic
Dealloying
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 29 November 2012

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2013 Collection
 
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