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Persistent URL http://purl.org/net/epubs/work/42969
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Record Id 42969
Title Influence of nitric acid pre-treatment on Al-Cu alloys
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