| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1468612 | Corrosion Science | 2015 | 5 Pages |
Abstract
The low corrosion rate of 3Cr steel is caused by prepassivation, which is believed to be related to the formation of a Cr(OH)3 layer on the surface of the steel, thus modifying the anodic reaction. The open-circuit voltage (OCP) of 3Cr steel exhibited a tendency to increase over time from −0.67 to −0.48 V. Simultaneously, the solution pH near the substrate decreased, which affected the cathodic reaction with the possible participation of the direct reduction of H+. Modifying both anodic and cathodic reactions maintains the OCP in the desired potential range, causing spontaneous prepassivation to occur.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Jinyang Zhu, Lining Xu, Minxu Lu, Lei Zhang, Wei Chang, Lihua Hu,