A comprehensive modelling and experimental approach to study the diffusion-controlled dissolution in pitting corrosion
Source abstract
Abstract
Abstract The novelty of this paper is that we consider the “diffusion-controlled” dissolution of a metal in a pit from a more advanced point of view, such that the limiting anodic current density (iL) varies with the bulk NaCl concentration in accordance with a mathematical model that includes ion migration. The full mass transport model was coupled with artificial pit experiments to obtain critical parameters for pit stability. At above 2.5 M NaCl, the conventional diffusion-only model gives reasonably accurate results, but the effect of Na+ at the bottom of the pit on iL and the metal’s solubility should be considered.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Corrosion Behavior and Inhibition · Concrete Corrosion and Durability
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References (20)
Show source-provided references
1. Diffusional effects in simulated localized corrosion10.1149/1.2134039 ↗
2. Diffusion-coupled active dissolution in the localized corrosion of stainless steels10.1149/1.2120048 ↗
3. Localised dissolution kinetics, salt films and pitting potentials10.1016/S0010-938X(97)00049-8 ↗
4. Effect of chloride concentration and temperature on growth of 1D pit10.1007/s10008-015-2780-4 ↗
5. Effects of environmental factors on key kinetic parameters relevant to pitting corrosion10.1007/s10008-015-2816-9 ↗
6. Further modeling of chloride concentration and temperature effects on 1D pit growth10.1149/2.0281614jes ↗
7. Perspective —localized corrosion: passive film breakdown vs pit growth stability10.1149/2.1381704jes ↗
8. Prediction of maximum pit sizes in elevated chloride concentrations and temperatures10.1149/2.0451911jes ↗
9. Mass transfer and electrochemical kinetic interactions in localized pitting corrosion10.1002/aic.690320605 ↗
10. Explanation of the effect of high chloride concentration on the critical pitting temperature of stainless steel10.1016/j.corsci.2007.03.026 ↗
11. Numerical and experimental simulation of iron dissolution in a crevice with a very dilute bulk solution10.1149/1.1838093 ↗
12. The effect of cation complexation on the predicted “B” value in Galvele’s pit model10.1149/2.0281911jes ↗
13. Status of pitting corrosion prediction in mixed solutions containing reduced sulfur species
14. Newman · 2004 · 271
15. Vetter · 1967 · 177
16. A mathematical model of crevice and pitting corrosion–I10.1016/0010-938X(88)90027-3 ↗
17. Transport and reaction during pitting corrosion of Ni in 0.5M NaCl: I. Stagnant fluid10.1149/1.2086022 ↗
18. Geometric evolution of flux from a corroding one-dimensional pit and its implications on the evaluation of kinetic parameters for pit stability10.1149/2.1221610jes ↗
19. Localized corrosion: passive film breakdown vs pit growth stability: part V. Validation of a new framework for pit growth stability using one-dimensional artificial pit electrodes10.1149/2.0431911jes ↗
20. Rotating disc electrode study of anodic dissolution or iron in concentrated chloride media10.1016/0013-4686(75)90022-5 ↗