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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
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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