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 language | English |
|---|---|
| Title of host publication | Critical Factors in Localized Corrosion 7 |
| Pages | 39-48 |
| Number of pages | 10 |
| Volume | 41 |
| Edition | 25 |
| DOIs | |
| Publication status | Published - 2012 |
| Event | 7th Symposium on Critical Factors in Localized Corrosion - 220th ECS Meeting - Boston, MA, United States Duration: Oct 10 2011 → Oct 13 2011 |
Other
| Other | 7th Symposium on Critical Factors in Localized Corrosion - 220th ECS Meeting |
|---|---|
| Country | United States |
| City | Boston, MA |
| Period | 10/10/11 → 10/13/11 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Computer simulation of crevice corrosion of stainless steels : Influence of alloying elements and film depassivation. / Malki, B.; Souier, T.; Peguet, L.; Baroux, B.
Critical Factors in Localized Corrosion 7. Vol. 41 25. ed. 2012. p. 39-48.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Computer simulation of crevice corrosion of stainless steels
T2 - Influence of alloying elements and film depassivation
AU - Malki, B.
AU - Souier, T.
AU - Peguet, L.
AU - Baroux, B.
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84879721534&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879721534&partnerID=8YFLogxK
U2 - 10.1149/1.3697576
DO - 10.1149/1.3697576
M3 - Conference contribution
SN - 9781607683247
VL - 41
SP - 39
EP - 48
BT - Critical Factors in Localized Corrosion 7
ER -