| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1471000 | Corrosion Science | 2010 | 8 Pages |
Abstract
The kinetics of oxide film formation/conversion on carbon steel in the presence of halide anions at pH 10.6 were studied by electrochemical and surface analytical techniques. While variations in breakdown potential are observed in the presence of the different halides, the breakdown potential does not show any systematic dependence on halide type and concentration, and never occurs below 0.0 V vs. SCE. It is proposed that the conversion of Fe3O4/γ-Fe2O3 to γ-FeOOH leads to a volume change, causing the film to fracture. The halide anion then takes advantage of the opportunity to accelerate breakdown and inhibit repassivation.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
K. Yazdanfar, X. Zhang, P.G. Keech, D.W. Shoesmith, J.C. Wren,