| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10227056 | Corrosion Science | 2018 | 48 Pages |
Abstract
The corrosion mechanism of a 2205 duplex stainless steel (DSS) in Pseudomonas aeruginosa inoculated medium was investigated using the information of electrochemical current noise (ECN) transients derived from Hilbert spectra and surface analysis. The pit depths from confocal laser scanning microscopy (CLSM) were analyzed stochastically. Results showed that metastable pitting and stable pitting occurred simultaneously, and they were controlled by different mechanisms in the presence of P. aeruginosa. Metastable pitting occurred in the region uncovered by P. aeruginosa unlike stable pitting. P. aeruginosa likely dissolved the passive film and produced soluble CrO3, leading to stable pitting.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yang Zhao, Enze Zhou, Dake Xu, Yange Yang, Ying Zhao, Tao Zhang, Tingyue Gu, Ke Yang, Fuhui Wang,