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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/34091
Record Status
Checked
Record Id
34091
Title
Behaviour of zinc in electropolished and etched Al-Zn alloys and effect on corrosion potential
Contributors
MA Arenas (UMIST)
,
L Inglesias-Rubianes (UMIST)
,
Y Liu (UMIST)
,
P Skeldon (UMIST)
,
GE Thompson (UMIST)
,
H Habazaki (Hokkaido U.)
,
K Shimizu (Keio U.)
,
P Bailey (CCLRC Daresbury Lab.)
,
TCQ Noakes (CCLRC Daresbury Lab.)
Abstract
The enrichments of zinc developed in binary, solid solution Al–0.3at.%Zn, Al–0.4at.%Zn and Al–1at.%Zn alloys by electropolishing and alkaline etching are examined using Rutherford backscattering spectroscopy and medium energy ion scattering with additional interest in how such enrichments affect the corrosion potentials of the alloys. During alkaline etching in 0.1 M sodium hydroxide solution, significant enrichments of zinc arise in the alloy, similar to that achieved by an anodizing treatment. However, enrichment is unusually low following electropolishing in perchloric acid solution. Contrary to the effect of enriched copper in Al–Cu alloys, zinc enrichment has minor influence on the corrosion potentials of etched alloys in ammonium pentaborate solution, which remain roughly within ±100 mV of those of non-enriched alloys.
Organisation
CCLRC
,
MEIS
Keywords
Materials
Funding Information
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Language
English (EN)
Type
Details
URI(s)
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Year
Journal Article
Corros Sci
47, no. 9 (2005): 2321-2331.
doi:10.1016/j.corsci.2004.09.023
2005
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