Mathematical modeling on the corrosion of unprotected structure due to stray current resulting from cathodic protection system |
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| Authors: | Y S Kim G J Jeong H J Sohn |
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| Affiliation: | (1) Department of Mineral and Petroleum Engineering, Seoul National University, San 56-1 shinrim-dong, kwanak-ku, 135-777 Seoul, Korea;(2) Division of Materials Science and Engineering, Seoul National University, Korea |
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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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| Keywords: | mathematical modeling stray current BEM cathodic protection mixed potential |
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