Decline in pitting corrosion resistance of 316 L stainless steel induced by Cr-depleted layer during tribocorrosion
Abstract The pitting corrosion resistance of austenite stainless steel was significantly reduced during tribocorrosion: corrosion pits with high density formed far below pitting potential. The aim of this study is to investigate the effects of tribocorrosion on the metastable pitting corrosion behav...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-03-01
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| Series: | npj Materials Degradation |
| Online Access: | https://doi.org/10.1038/s41529-025-00569-8 |
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| author | Zhongwei Wang Yinchao Wu Lijie Qiao Yu Yan |
| author_facet | Zhongwei Wang Yinchao Wu Lijie Qiao Yu Yan |
| author_sort | Zhongwei Wang |
| collection | DOAJ |
| description | Abstract The pitting corrosion resistance of austenite stainless steel was significantly reduced during tribocorrosion: corrosion pits with high density formed far below pitting potential. The aim of this study is to investigate the effects of tribocorrosion on the metastable pitting corrosion behaviour of 316 L stainless steel. The results indicated that the formation of a Cr-depleted layer on nanocrystallized surface (NS) during tribocorrosion played the crucial role in reducing pitting corrosion resistance of the stainless steel. The Cr-depleted layer led to a significant increase in defect density and a reduction in Cr content in the passive film, that increased the number of pitting nucleation sites and weakened the chloride-resistance of the passive film. Further, the initial dissolution of the Cr-depleted layer provided a high cation concentration to sustain pit growth on the NS with high reactivity beneath it. Consequently, metastable pits with high density could initiate and grow at low potentials. |
| format | Article |
| id | doaj-art-57ade85dca7c4ea7b270a43f5f6d4b05 |
| institution | DOAJ |
| issn | 2397-2106 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Materials Degradation |
| spelling | doaj-art-57ade85dca7c4ea7b270a43f5f6d4b052025-08-20T03:05:49ZengNature Portfolionpj Materials Degradation2397-21062025-03-019111310.1038/s41529-025-00569-8Decline in pitting corrosion resistance of 316 L stainless steel induced by Cr-depleted layer during tribocorrosionZhongwei Wang0Yinchao Wu1Lijie Qiao2Yu Yan3College of Materials Science and Engineering, Chongqing University of TechnologyCollege of Materials Science and Engineering, Chongqing University of TechnologyCorrosion and Protection Center, University of Science and Technology BeijingCorrosion and Protection Center, University of Science and Technology BeijingAbstract The pitting corrosion resistance of austenite stainless steel was significantly reduced during tribocorrosion: corrosion pits with high density formed far below pitting potential. The aim of this study is to investigate the effects of tribocorrosion on the metastable pitting corrosion behaviour of 316 L stainless steel. The results indicated that the formation of a Cr-depleted layer on nanocrystallized surface (NS) during tribocorrosion played the crucial role in reducing pitting corrosion resistance of the stainless steel. The Cr-depleted layer led to a significant increase in defect density and a reduction in Cr content in the passive film, that increased the number of pitting nucleation sites and weakened the chloride-resistance of the passive film. Further, the initial dissolution of the Cr-depleted layer provided a high cation concentration to sustain pit growth on the NS with high reactivity beneath it. Consequently, metastable pits with high density could initiate and grow at low potentials.https://doi.org/10.1038/s41529-025-00569-8 |
| spellingShingle | Zhongwei Wang Yinchao Wu Lijie Qiao Yu Yan Decline in pitting corrosion resistance of 316 L stainless steel induced by Cr-depleted layer during tribocorrosion npj Materials Degradation |
| title | Decline in pitting corrosion resistance of 316 L stainless steel induced by Cr-depleted layer during tribocorrosion |
| title_full | Decline in pitting corrosion resistance of 316 L stainless steel induced by Cr-depleted layer during tribocorrosion |
| title_fullStr | Decline in pitting corrosion resistance of 316 L stainless steel induced by Cr-depleted layer during tribocorrosion |
| title_full_unstemmed | Decline in pitting corrosion resistance of 316 L stainless steel induced by Cr-depleted layer during tribocorrosion |
| title_short | Decline in pitting corrosion resistance of 316 L stainless steel induced by Cr-depleted layer during tribocorrosion |
| title_sort | decline in pitting corrosion resistance of 316 l stainless steel induced by cr depleted layer during tribocorrosion |
| url | https://doi.org/10.1038/s41529-025-00569-8 |
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