期刊
CORROSION SCIENCE
卷 81, 期 -, 页码 45-53出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.12.001
关键词
Alloy; Aluminium; Rare-earth elements; Polarization; SEM; Neutral inhibition
资金
- Deakin University
- Australian Postgraduate Award (APA)
- CSIRO
- Australian Research Council through the Australian Laureate Fellowship
The susceptibility of the aluminium alloy, AA2024-T3, to localised corrosion as well as the toxicity of chromate inhibitors are both well known facts. In this paper the effect on the corrosion of AA2024-T3 of the thiol-containing mercaptoacetate, when coupled with cerium or praseodymium is examined. Potentiodynamic polarisation and SEM/EDXS were used to analyse the inhibiting behaviour of the compounds cerium mercaptoacetate and praseodymium mercaptoacetate. Both inhibitors were predominantly cathodic inhibitors with increasing anodic inhibition after 24 h of immersion. A mechanism of film formation and corrosion protection was also proposed. (C) 2013 Elsevier Ltd. All rights reserved.
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