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Electrochemical investigations on crevice corrosion of a martensitic stainless steel in a thin-layer cell

Marcelin, Sabrina and Pébère, Nadine and Régnier, Sophie Electrochemical investigations on crevice corrosion of a martensitic stainless steel in a thin-layer cell. (2015) Journal of Electroanalytical Chemistry, 737. 198-205. ISSN 1572-6657

(Document in English)

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Official URL: http://dx.doi.org/10.1016/j.jelechem.2014.07.008


This paper focuses on crevice corrosion resistance of a martensitic stainless steel. First, electrochemical measurements were performed in deaerated bulk electrolytes for different chloride concentrations and different values of the pH to determine the critical parameters leading to dissolution or breakdown of the passive film. Then, a thin-layer cell was designed to confine the electrolyte between two parallel stainless steel planes. Impedance measurements obtained for different immersion times and electrolyte thicknesses clearly showed the influence of these two parameters on the crevice corrosion rate. A significant decrease of the corrosion resistance when the medium is increasingly confined was observed. The data obtained in the bulk electrolytes were used to determine the critical conditions in the thin-layer cell which impede the repassivation of the stainless steel (pH and [Cl−]).

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of Electroanalytical Chemistry website : http://www.sciencedirect.com/science/article/pii/S1572665714002884
HAL Id:hal-01264413
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Institut Catholique des Arts et Métiers - ICAM (FRANCE)
Laboratory name:
Deposited On:29 Jan 2016 10:53

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