Abstract
Cellular Automata based approach to modelling of the corrosion and passivation of metals in electrolytes is presented. We simulate the growth of the passive layer using an asynchronous CA, implemented for parallel processing on a GPU. In the present version of our model, the studied system is under galvanostatic control. The electric potential is adjusted to fix the current flow to a prescribed value. In the electrochemical experiments, this leads to potential oscillations for certain values of the current. This is related to the fact that for certain range of potentials our system displays a negative differential resistivity. We manage to obtain potential oscillations in our simulations. To our knowledge this is the first time that this peculiar feature of passivating system is reproduced by a computer simulation.
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Acknowledgements
The authors need to thank the National Science Centre (Poland) for funding – OPUS Project: Numerical simulations of passive layer morphology at the metal electrode, grant number UMO-2015/19/B/ST4/03753.
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Stępień, J., Stafiej, J. (2018). Potential Oscillations in Cellular Automaton Based Model for Passivation of Metal Surface. In: Mauri, G., El Yacoubi, S., Dennunzio, A., Nishinari, K., Manzoni, L. (eds) Cellular Automata. ACRI 2018. Lecture Notes in Computer Science(), vol 11115. Springer, Cham. https://doi.org/10.1007/978-3-319-99813-8_8
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