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Reducing the energy cost of protective anodizing

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Abstract

Minimizing the carbon footprint of electrochemical processes is an emerging challenge for electrochemists and engineers. Here, a knowledge-based methodology for development of protective anodizing cycles for aluminium alloys, enabling simultaneous tuning of electrolyte concentration, composition, temperature and process time for reduced energy consumption is presented. In order to achieve the anticorrosion properties, the morphology of the porous anodic oxides is optimized by applying advanced potential-time regimes and additions of environmentally, friendly corrosion inhibitors to the anodizing electrolyte to provide additional active protection. The anticorrosion performance of the porous anodic oxides is assessed rapidly by electrochemical noise analysis, with the electrochemical data validated by optical and electron-optical observations.

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Acknowledgements

The authors acknowledge the financial support provided by the Engineering and Physical Sciences Research Council Programme Grant, LATEST2.

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Authors and Affiliations

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

    M. Curioni, P. Skeldon & G. E. Thompson

  2. Airbus Operations Ltd, New Filton House, Filton, Bristol, BS99 7AR, UK

    J. Ferguson

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  1. M. Curioni
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  2. P. Skeldon
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  3. J. Ferguson
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  4. G. E. Thompson
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Correspondence to M. Curioni.

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Curioni, M., Skeldon, P., Ferguson, J. et al. Reducing the energy cost of protective anodizing. J Appl Electrochem 41, 773–785 (2011). https://doi.org/10.1007/s10800-011-0295-y

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  • DOI: https://doi.org/10.1007/s10800-011-0295-y

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