Computer simulation of crevice corrosion of stainless steels: Influence of alloying elements and film depassivation

B. Malki, T. Souier, L. Peguet, B. Baroux

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Crevice corrosion kinetics of AISI 430 and AISI 304 stainless steels (SS) are investigated using both electrochemical transients measurements and finite element method calculations. The experimental results lead to a quantitative picture of the well-known corrosion resistance difference between austenic and ferritic SS. A rational explanation of this behavior is provided by the modeling approach. The results lead to the formulation of critical conditions for crevice propagation in terms of dissolution current (IG) and depassivation pHd. In particular, the model estimates correctly the evolution of the corroded surface and fairly predicts the better crevice corrosion resistance of the austenitic grade, which is attributed to the slow dissolution rates in active conditions and to low pHd.

Original languageEnglish
Title of host publicationCritical Factors in Localized Corrosion 7
Pages39-48
Number of pages10
Volume41
Edition25
DOIs
Publication statusPublished - 2012
Event7th Symposium on Critical Factors in Localized Corrosion - 220th ECS Meeting - Boston, MA, United States
Duration: Oct 10 2011Oct 13 2011

Other

Other7th Symposium on Critical Factors in Localized Corrosion - 220th ECS Meeting
CountryUnited States
CityBoston, MA
Period10/10/1110/13/11

ASJC Scopus subject areas

  • Engineering(all)

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    Malki, B., Souier, T., Peguet, L., & Baroux, B. (2012). Computer simulation of crevice corrosion of stainless steels: Influence of alloying elements and film depassivation. In Critical Factors in Localized Corrosion 7 (25 ed., Vol. 41, pp. 39-48) https://doi.org/10.1149/1.3697576