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Electrochemical characterization of metastable pitting of 3003 aluminum alloy in ethylene glycol–water solution

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Abstract

The corrosion and electrochemical behavior of 3003 aluminum alloy in ethylene glycol–water solution were investigated by electrochemical techniques. It is found that the oxide film formed on aluminum depends on the dissolved oxygen in the solution. In the presence of oxygen, a layer of aluminum oxide film forms on the aluminum surface to protect the substrate from corrosion. In the absence of oxygen, the film formed is mainly aluminum-alcohol film that is less compact and less resistant to corrosion. The aluminum oxide film and aluminum-alcohol film have the different susceptibilities to chloride ion attack for pit initiation. There is a higher pitting susceptibility for aluminum oxide-covered electrode. The increase in temperature decreases the resistance of aluminum electrode to corrosion reaction. However, the resistance to pitting corrosion increases.

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Acknowledgements

This work was supported by Canada Research Chairs Program and Natural Science and Engineering Research Council of Canada (NSERC).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong, 250100, China

    Lin Niu

  2. Deparment of Mechanical and Manufacturing Engineering, University of Calgary, 2500 University Avenue NW, Calgary, AB, Canada, T2N 1N4

    Y. Frank Cheng

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  1. Lin Niu
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  2. Y. Frank Cheng
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Correspondence to Y. Frank Cheng.

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Niu, L., Cheng, Y.F. Electrochemical characterization of metastable pitting of 3003 aluminum alloy in ethylene glycol–water solution. J Mater Sci 42, 8613–8617 (2007). https://doi.org/10.1007/s10853-007-1841-1

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  • DOI: https://doi.org/10.1007/s10853-007-1841-1

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