Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5440133 | Corrosion Science | 2016 | 12 Pages |
Abstract
Crevice corrosion of N80 carbon steel in CO2-saturated environment containing acetic acid (HAc) was studied by electrochemical measurements and surface analysis. No obvious corrosion is observed on the half-electrode outside crevice while severe corrosion occurs on the half-electrode inside crevice, and deep corrosion groove appears at the crevice mouth. Crevice corrosion of carbon steel is triggered by the galvanic effect between the two half-electrodes inside and outside crevice. Crevice corrosion is promoted by increasing the HAc concentration because the galvanic effect between the two half-electrodes inside and outside crevice is strengthened with the increase of HAc concentration.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Y.Z. Li, N. Xu, G.R. Liu, X.P. Guo, G.A. Zhang,