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Modelling of the evolution of iron passivity: solving the moving boundaries problem

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Abstract

In the framework of long term prediction of corrosion in French geological repository systems, the modelling of the time evolution of the corrosion rate of iron over centuries is of high matter. The DPCM (Diffusion Poisson Coupled Model), implemented with the fully implicit CALIPSO numerical code can give access to the evolution of the oxide thickness grown on iron and the resulting corrosion rate. DPCM parameters for outer interfacial reactions have been set to fit to XANES experimental data provided by literature, and then the parameters for inner reaction rates have been evaluated from fitting to ellipsometry results taken from literature. The result is a good average fitting of the model to the experimental data.

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Acknowledgments

The authors greatly acknowledge the French agency for the nuclear waste management, ANDRA, and the French atomic energy commission, CEA, for financial support.

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Authors and Affiliations

  1. CEA, DEN, DPC, SCCME, Laboratoire d’Etude de la Corrosion Aqueuse, F-91191, Gif-sur-Yvette, France

    Frantz A. Martin & Christian Bataillon

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  1. Frantz A. Martin
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  2. Christian Bataillon
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Martin, F.A., Bataillon, C. Modelling of the evolution of iron passivity: solving the moving boundaries problem. MRS Online Proceedings Library 1475, 275–280 (2012). https://doi.org/10.1557/opl.2012.586

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  • DOI: https://doi.org/10.1557/opl.2012.586

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