| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7894624 | Corrosion Science | 2016 | 30 Pages |
Abstract
The acoustic emission (AE) energy was analyzed to monitor the pitting process on a vertically positioned 304-stainless steel. The gravity-dependent morphology of the elongated corrosion pits was observed. A scatter plot of the duration and energy indicated two AE clusters with different energy levels. There was a time delay after the detection of the low-energy hydrogen-bubble signals. Subsequently, high-energy signals were observed, whose AE source was attributed to large-scale cracks formed during the rupture of the elongated pit cover. An in-situ analysis of the AE energy evolution provided detailed insights into the corrosion process in relation to the specimen position.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Kaige Wu, Woo-Sang Jung, Jai-Won Byeon,