TY - JOUR
T1 - Corrosion of pure aluminium and aluminium alloy
T2 - 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, A.
AU - Coleman, P. G.
AU - Zhai, T.
PY - 2011
Y1 - 2011
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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U2 - 10.1088/1742-6596/262/1/012065
DO - 10.1088/1742-6596/262/1/012065
M3 - Article
AN - SCOPUS:79952145517
SN - 1742-6588
VL - 262
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012065
ER -