A nonlinear model for AC induced corrosion

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N. Ida
Y. Le Menach
X. Shan
J. Payer


The modeling of corrosion poses particular difficulties. The understanding of corrosion as an electrochemical process has led to simple capacitive-resistive models that take into account the resistance of the electrolytic cell and the capacitive effect of the surface potential at the interface between conductors and the electrolyte. In some models nonlinear conduction effects have been added to account for more complex observed behavior. While these models are sufficient to describe the behavior in systems with cathodic protection, the behavior in the presence of induced AC currents from power lines and from RF sources cannot be accounted for and are insufficient to describe the effects observed in the field. Field observations have shown that a rectifying effect exists that affects the cathodic protection potential and this effect is responsible for corrosion in the presence of AC currents. The rectifying effects of the metal-corrosion interface are totally missing from current models. This work proposes a nonlinear model based on finite element analysis that takes into account the nonlinear behavior of the metal-oxide interface and promises to improve modeling by including the rectification effects at the interface.


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Ida, N., Le Menach, Y., Shan, X., & Payer, J. (2012). A nonlinear model for AC induced corrosion. Advanced Electromagnetics, 1(1), 92–96. https://doi.org/10.7716/aem.v1i1.54
Research Articles
Author Biography

N. Ida, University of Akron

Distinguished Professor, Department of Electrical and Computer Engineering


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