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Persistent URL
http://purl.org/net/epubs/work/42969
Record Status
Checked
Record Id
42969
Title
Influence of nitric acid pre-treatment on Al-Cu alloys
Contributors
Y Liu (Manchester U.)
,
MA Arenas (CENIM/CSIC, Madrid)
,
A de Frutos (CENIM/CSIC, Madrid)
,
J de Damborenea (CENIM/CSIC, Madrid)
,
A Conde (CENIM/CSIC, Madrid)
,
P Skeldon (Manchester U.)
,
GE Thompson (Manchester U.)
,
P Bailey (STFC Daresbury Lab.)
,
TCQ Noakes (STFC Daresbury Lab.)
Abstract
The enrichment of copper alloying additions near the surface of sputtering-deposited Al–1.3 at.%Cu, Al–2.7 at.%Cu and Al–30 at.%Cu alloys is investigated following immersion in nitric acid, which is used commercially as a de-smutting pre-treatment. Corrosion of the alloys is revealed at rates in the range 4–13 nm min?1, leading to enrichment of copper in the alloy surface regions. Enrichments are also generated by nitric acid treatment of AA2024-T3 and AA7075-T6 alloys, with levels similar to those achieved by etching in sodium hydroxide solution. Conventional durations of de-smutting treatments in nitric acid have minor influences on the magnitude of enrichment.
Organisation
MEIS
,
ASTeC
,
STFC
Keywords
Materials
Funding Information
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Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Electrochim Acta
53, no. 13 (2008): 4454-4460.
doi:10.1016/j.electacta.2008.01.026
2008
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