Abstract
An interpretation of the relation between the electric field and the applied current for cathodic protection is investigated using a boundary element method simulation. Also, a conductivity-difference environment is set for the interface influence. The variation of the potential distribution is increased with the increase of the applied current and the conductivity difference due to the rejection of the current at the interface. In the case of the electric field, the tendencies of the increasing rate and the applied currents are similar, but the interface influence is different according to the directional component and field type (decrease of Ez and increases of Ex and Ey) due to the directional difference between the electric fields. Also, the change tendencies of the electric fields versus the applied current plots are affected by the polarization curve tendency regarding the polarization type (activation and concentration polarizations in the oxygen-reduction and hydrogen-reduction reactions). This study shows that the underwater electric signature is determined by the polarization behavior of the materials.
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This work was supported by the Agency for Defense Development (No. UD150010DD).
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Kim, YS., Ko, SJ., Lee, S. et al. Computational Interpretation of the Relation Between Electric Field and the Applied Current for Cathodic Protection Under Different Conductivity Environments. Met. Mater. Int. 24, 315–326 (2018). https://doi.org/10.1007/s12540-018-0034-6
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DOI: https://doi.org/10.1007/s12540-018-0034-6