Catubig, R.Hughes, A. E.Cole, I. S.Hinton, B. R.W.Forsyth, M.2026-07-032026-07-030010-938XORCID:/0000-0001-6582-1457/work/219176374https://hdl.handle.net/1885/733812713The 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.The authors would like to thank Deakin University, an Australian Postgraduate Award (APA) and CSIRO for financial support. The Australian Research Council is also acknowledged for funding through the Australian Laureate Fellowship. Acknowledgements are also given to the Deakin University Electron Microscopy Facilities for use of their SEM/EDXS instruments as well as Andrew Sullivan, Khanh Tran and John Ward for training and guidance in SEM imaging.9enA. AlloyA. AluminiumA. Rare-earth elementsB. PolarizationB. SEMC. Neutral inhibition201410.1016/j.corsci.2013.12.00184892961674