Journal article

Interaction of Ce(dbp)(3) with surface of aluminium alloy 2024-T3 using macroscopic models of intermetallic phases

FH Scholes, AE Hughes, D Jamieson, K Inoue, SA Furman, TH Muster, SG Hardin, D Lau, TG Harvey, P Corrigan, M Glenn, PA White, J Mardel, M Forsyth

CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | MANEY PUBLISHING | Published : 2009

Abstract

The mechanism of corrosion inhibition by cerium(III) dibutylphosphate [Ce(dbp)3] on aluminium alloy 2024-T3 (AA2024-T3) has been investigated using macroscopic models of the intermetallic (IM) phases in the alloy. Polished specimens of pure Al (99?999%) and the macroscopic IM phases Al2CuMg, Al7Cu2Fe and Al3Fe were each coupled to a large surface area of AA2024-T3 to simulate the interaction they experience in the alloy. Samples were immersed in 0·1M NaCl with 200 ppm Ce(dbp)3 for 24 h, and the resulting surfaces characterised by scanning electron microscopy, X-ray photoelectron spectroscopy, Rutherford backscattering spectroscopy and Raman spectroscopy. Ce(dbp)3 was found to interact differ..

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University of Melbourne Researchers