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Analyses of the Sequential Stages of Corrosion on AA2024T3 Using the Scanning Vibrating Electrode Technique (SVET)

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Abstract

The scanning vibrating electrode technique (SVET) has been used to study the in-situ corrosion phenomena on AA2024T3 aluminum alloy. Three distinct sequential stages of corrosion attack, with time, on the alloy have been revealed (0-75, 75-180 min, and after 180 min). The increase and decrease in the intensity of the anodic activities at the surface of the alloy, which give a corresponding increase and decrease in the net current density values, with time, are responsible for the stepwise changes in the corrosion stages. The work also revealed mild etch-like attack regions on the surface of the alloy after the immersion test.

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Acknowledgments

The authors acknowledge EPSRC for the provision of grants through the LATEST2 Programme Grant. One of the authors, Mr. U. Donatus, acknowledges the PTDF for support of his studentship.

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Authors and Affiliations

  1. Corrosion and Protection Centre, School of Materials, The University of Manchester, Manchester, M13 9PL, UK

    U. Donatus, G. E. Thompson, H. Liu & D. Elabar

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  1. U. Donatus
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  2. G. E. Thompson
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  3. H. Liu
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  4. D. Elabar
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Correspondence to U. Donatus.

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Donatus, U., Thompson, G.E., Liu, H. et al. Analyses of the Sequential Stages of Corrosion on AA2024T3 Using the Scanning Vibrating Electrode Technique (SVET). J. of Materi Eng and Perform 24, 3808–3814 (2015). https://doi.org/10.1007/s11665-015-1701-0

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  • DOI: https://doi.org/10.1007/s11665-015-1701-0

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