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Persistent URL	http://purl.org/net/epubs/work/35925
Record Status	Checked
Record Id	35925
Title	Generation of copper nanoparticles during alkaline etching of an Al-30 at.%Cu alloy
Contributors	Y Liu (Manchester U.), MA Arenas (Manchester U.), P Skeldon (Manchester U.), GE Thompson (Manchester U.), H Habazaki (Hokkaido U.), K Shimizu (Keio U.), P Bailey (CCLRC Daresbury Lab.), TCQ Noakes (CCLRC Daresbury Lab.)
Abstract	A mechanism of formation of copper nanoparticles is proposed for alkaline etching of a sputtering-deposited Al–30 at.%Cu alloy, simulating the equilibrium ? phase of 2000 series aluminium alloys. Their formation involves enrichment of copper in the alloy beneath a thin alumina film, clustering of copper atoms, and occlusion of the clusters, due to growth of alumina around the clusters, to form nanoparticles. The proposed mechanism is supported by medium energy ion scattering, Rutherford backscattering spectroscopy, X-ray photoelectron spectroscopy, and transmission electron microscopy of the alloy following immersion in the sodium hydroxide solution, which disclose the enrichment of copper and the generation of the nanoparticles in the etching product of hydrated alumina. The generation of the nanoparticles is dependent upon the enrichment of copper in the alloy in a layer of a few nanometres thickness, with no requirement for bulk de-alloying of the alloy.
Organisation	CCLRC , SND , MEIS
Keywords	Materials
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Journal Article	Corros Sci 48, no. 8 (2006): 1874-1884.	doi:10.1016/j.corsci.2005.07.011		2006