Corrosion of pure aluminium and aluminium alloy: A comparative study using a slow positron beam

Y C Wu; P H Li; X D Xue; S J Wang; Alexis Kallis; Paul G Coleman; T Zhai

doi:10.1088/1742-6596/262/1/012065

Corrosion of pure aluminium and aluminium alloy: A comparative study using a slow positron beam

Y C Wu, P H Li, X D Xue, S J Wang, Alexis Kallis, Paul G Coleman, T Zhai

Department of Physics

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4 Citations (SciVal)

Abstract

Corrosion-related defects in pure Al and AA 2037 Al alloy have been investigated by positron beam-based Doppler broadening energy spectroscopy. Defect profiles have been analyzed by measuring the S parameter as a function of incident positron energy up to 30 keV. When pure Al samples are immersed in 1M NaOH for various times, a significant increase in the S parameter near the surface is observed. This implies that the corrosion process involves the creation of defects and nanometer voids. In contrast, a significant decrease in the S parameter is observed after the corrosion of water-quenched Al alloy by the same method, which is interpreted as being a result of Cu enrichment near the metal-oxide interface layer.

Original language	English
Article number	012065
Number of pages	4
Journal	Journal of Physics: Conference Series
Volume	262
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/262/1/012065
Publication status	Published - 2011
Event	12th International Workshop on Slow Positron Beam Techniques for Solids, Surfaces, Atoms and Molecules, SLOPOS12, August 1, 2010 - August 6, 2010 - Magnetic Island, QLD, Australia Duration: 1 Jan 2011 → …

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title = "Corrosion of pure aluminium and aluminium alloy: A comparative study using a slow positron beam",

abstract = "Corrosion-related defects in pure Al and AA 2037 Al alloy have been investigated by positron beam-based Doppler broadening energy spectroscopy. Defect profiles have been analyzed by measuring the S parameter as a function of incident positron energy up to 30 keV. When pure Al samples are immersed in 1M NaOH for various times, a significant increase in the S parameter near the surface is observed. This implies that the corrosion process involves the creation of defects and nanometer voids. In contrast, a significant decrease in the S parameter is observed after the corrosion of water-quenched Al alloy by the same method, which is interpreted as being a result of Cu enrichment near the metal-oxide interface layer.",

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T1 - Corrosion of pure aluminium and aluminium alloy: A comparative study using a slow positron beam

AU - Wu, Y C

AU - Li, P H

AU - Xue, X D

AU - Wang, S J

AU - Kallis, Alexis

AU - Coleman, Paul G

AU - Zhai, T

PY - 2011

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N2 - Corrosion-related defects in pure Al and AA 2037 Al alloy have been investigated by positron beam-based Doppler broadening energy spectroscopy. Defect profiles have been analyzed by measuring the S parameter as a function of incident positron energy up to 30 keV. When pure Al samples are immersed in 1M NaOH for various times, a significant increase in the S parameter near the surface is observed. This implies that the corrosion process involves the creation of defects and nanometer voids. In contrast, a significant decrease in the S parameter is observed after the corrosion of water-quenched Al alloy by the same method, which is interpreted as being a result of Cu enrichment near the metal-oxide interface layer.

AB - Corrosion-related defects in pure Al and AA 2037 Al alloy have been investigated by positron beam-based Doppler broadening energy spectroscopy. Defect profiles have been analyzed by measuring the S parameter as a function of incident positron energy up to 30 keV. When pure Al samples are immersed in 1M NaOH for various times, a significant increase in the S parameter near the surface is observed. This implies that the corrosion process involves the creation of defects and nanometer voids. In contrast, a significant decrease in the S parameter is observed after the corrosion of water-quenched Al alloy by the same method, which is interpreted as being a result of Cu enrichment near the metal-oxide interface layer.

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Corrosion of pure aluminium and aluminium alloy: A comparative study using a slow positron beam

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