Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10227068 | Corrosion Science | 2018 | 28 Pages |
Abstract
The effect of frequency and time of cathodic protection potential fluctuations on pitting corrosion of X100 pipeline steel was investigated by square wave polarization (SWP) and theoretical calculations. Results demonstrate that pitting corrosion can occur on the cathodically polarized steel and primarily produce on the steel matrix rather than non-metallic inclusions. The pit density increases with the total loading time of the SWP potential (tt) under identical SWP period (T). With the extended T, the density of pits decreases under the same tt. The current and potential equations in the time and frequency domains are derived from calculation.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Mingjie Dai, Jing Liu, Feng Huang, Yaohua Zhang, Y. Frank Cheng,