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

Research output: Contribution to journalArticle

3 Citations (Scopus)

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 languageEnglish
Article number012065
Number of pages4
JournalJournal of Physics: Conference Series
Volume262
Issue number1
DOIs
Publication statusPublished - 2011
Event12th 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 → …

Fingerprint Dive into the research topics of 'Corrosion of pure aluminium and aluminium alloy: A comparative study using a slow positron beam'. Together they form a unique fingerprint.

Cite this