Abstract
This paper presents a predictive model for the determination of different types of corrosion by using electrochemical impedance spectroscopy curves and artificial neural network. This proposed model obtains predictions for three different types of corrosion by using Nyquist impedance curves from four input variables: inhibitor concentration, time of exposure, and the real and imaginary experimental component of these curves. The model takes into account the variations of inhibitor concentration over steel to decrease the corrosion rate. For the network, the Levenberg–Marquardt learning algorithm, the hyperbolic tangent sigmoid transfer function and the linear transfer function were used. The best fitting training data set was obtained with five neurons in the hidden layer, which made possible to predict satisfactory efficiency (R > 0.99). On the validation of the data set, simulations and theoretical data tests were in good agreement (R > 0.9905). The developed model can be used for the determination of the type of curves related to the nature phenomena and rate of corrosion at the metal surface.
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Acknowledgements
We thank the SRE (Secretaria de Relaciones esteriores de México) for the economic support received for the development of this work. We also thank Dr. Jorge Alberto Andaverde Arredondo for the statistical support for this work.
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Bassam, A., Ortega-Toledo, D., Hernandez, J.A. et al. Artificial neural network for the evaluation of CO2 corrosion in a pipeline steel. J Solid State Electrochem 13, 773–780 (2009). https://doi.org/10.1007/s10008-008-0588-1
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DOI: https://doi.org/10.1007/s10008-008-0588-1