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Mathematical modeling on the corrosion of unprotected structure due to stray current resulting from cathodic protection system

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Abstract

Mathematical modeling on the corrosion of unprotected structures due to a stray current resulting from a nearby cathodic protection system was carried out using the boundary element method. The model consists Laplace’s equation with non-linear boundary conditions (Tafel equations) and the iterative technique to determine the mixed potential of the unprotected structure. The model is applied to an unprotected bare structure as well as a coated structure with several defects. The amount and the location of corrosion along the unprotected structure correlate strongly with experimental results within the experimental conditions studied.

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Authors and Affiliations

  1. Department of Mineral and Petroleum Engineering, Seoul National University, San 56-1 shinrim-dong, kwanak-ku, 135-777, Seoul, Korea

    Y. S. Kim, G. J. Jeong & H. J. Sohn

  2. Division of Materials Science and Engineering, Seoul National University, Korea

    H. J. Sohn

Authors
  1. Y. S. Kim
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  2. G. J. Jeong
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  3. H. J. Sohn
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Kim, Y.S., Jeong, G.J. & Sohn, H.J. Mathematical modeling on the corrosion of unprotected structure due to stray current resulting from cathodic protection system. Metals and Materials 5, 93–99 (1999). https://doi.org/10.1007/BF03026009

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  • DOI: https://doi.org/10.1007/BF03026009

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