Morphology of corroded surfaces: Contribution of cellular automaton modelling

Caprio, Dung Di; Vautrin-Ul, C.; Stafiej, J.; Saunier, J.; Chaussé, A.; Féron, Damien; Badiali, J.P.

doi:10.1016/j.corsci.2010.09.052

Cited by 65 publications

(45 citation statements)

References 33 publications

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“…A detailed description of the model is given in Ref. 1 It has been shown that the film formation on a metal can be described in terms of three main processes 1 ( Fig. 1):…”

Section: Electrochemical and Ca Modelsmentioning

confidence: 99%

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Cellular automata approach for morphological evolution of localised corrosion

Caprio

Vautrin-Ul

Stafiej

et al. 2011

Corrosion Engineering, Science and Technology

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We present a cellular automata approach to the morphology evolution of a corroding metal surface. In the model, we consider a morphology dependent corrosion probability of a site on the corrosion front. Selecting the model parameters we are able to reproduce a variety of different pit shapes and morphological regimes ranging from narrow pore-like channels to broader cavities. In the model, we control the ratio between localised and uniform corrosion. A diffusion process is also taken into account. The model is capable of predicting different scenarios for the evolution of the corrosion front in time.

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“…A detailed description of the model is given in Ref. 1 It has been shown that the film formation on a metal can be described in terms of three main processes 1 ( Fig. 1):…”

Section: Electrochemical and Ca Modelsmentioning

confidence: 99%

“…In a recent article, 1 we present a simple model of localised corrosion and show how within a unified framework it can predict different morphologies for the corrosion front. Understanding the underlying mechanisms of localised corrosion and the competition with the uniform corrosion is an important issue.…”

Section: Introductionmentioning

confidence: 99%

Cellular automata approach for morphological evolution of localised corrosion

Caprio

Vautrin-Ul

Stafiej

et al. 2011

Corrosion Engineering, Science and Technology

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“…Lei, Xiaogang, Chaofang, & Yizhong , 2009a, Lei, Xiaogang, Chaofang, Kui, & Lin , 2009b exploited this mathematical device by following different routes, that is, in the computational simulation of the critical metastability stage, and in the modeling of pitting current transients. In most recent studies, Di Caprio et al (2011) proposed the use of cellular automaton to model the morphology of corroded surfaces.…”

Section: Introductionmentioning

confidence: 99%

Representing localized corrosion processes through cellular automata

Contreras¹,

Goidanich

Maggi

et al. 2011

Corrosion Reviews

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This research illustrates a spatially distributed cellular automaton aimed at simulating the pitting corrosion process in stainless steels. The cellular automaton model is based on the metal surface discretization into square cells; in any instant, each cell is found to be in one of the following states: (i) passivity (the passive fi lm on the cell surface is stable and protective), (ii) metastability (the passive fi lm is unstable and can either break, causing pitting initiation, or repassivate), and (iii) pitting (the cell has turned into a stable attack area, with no repassivation chance). At the very beginning, all cells are in passivity state. Subsequently, a stochastic process drives the changes in the state of cells, following rules drawn from the kinetics of pitting localized corrosion. In particular, the transition probabilities of each single cell from one state to another are infl uenced by the adjacent cells. The comparison between simulations run with the proposed model and laboratory experimental results demonstrates that the model is suitable for describing pitting corrosion processes.

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“…In this framework, he was able to include the important characteristic features such as the diffusion of constituents, reactants and the spatial separation of anodic and cathodic reaction. His intuition was that, although the process at the local scale can be described by simple, elementary CA evolution rules, at a larger scale, collectively, there can be a subtle interplay between these phenomena and the overall morphology of the interfaces [61]. As a result, complex kinetics may emerge, the understanding of which is crucial in predicting the durability of the device.…”

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confidence: 99%

“…One can consider the roughness factor or the mean-square deviation of the front line from its mean position [65] and also what Jean-Pierre called the chemical roughness related to the number of reactive sites. Developed in two dimensions [66][67][68][69][70][71][72][73], these models are still being developed by collaborators and the recent results on corrosion are presented in this issue [74,75] as well as complex disorder media, porous systems studies [76,77]. Jean-Pierre considered corrosion as a method to produce new materials and worked in this spirit to see how it is possible to describe the formation of organized structures on a surface from the theoretical point of view [73].…”

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confidence: 99%