Crevice corrosion of U75V high-speed rail steel with varying crevice gap size by in-situ monitoring
Crevice corrosion of high-speed rail steel U75V was studied with varying gap size by using self-designed device. Increasing gap size inhibited exterior cathodic reduction reaction of oxygen, inducing decrease of potential difference between interior and exterior. Gap size decrease after increase ind...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-01-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785421015593 |
| _version_ | 1818972010664951808 |
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| author | Weichen Xu Yu Deng Binbin Zhang Jie Zhang Zhongbo Peng Baorong Hou Jizhou Duan |
| author_facet | Weichen Xu Yu Deng Binbin Zhang Jie Zhang Zhongbo Peng Baorong Hou Jizhou Duan |
| author_sort | Weichen Xu |
| collection | DOAJ |
| description | Crevice corrosion of high-speed rail steel U75V was studied with varying gap size by using self-designed device. Increasing gap size inhibited exterior cathodic reduction reaction of oxygen, inducing decrease of potential difference between interior and exterior. Gap size decrease after increase induced increase of potential difference after decrease, not completely reversible because rust kept expanding, acting as weaker depolarizer than oxygen. Anodic dissolution of interior was under ohmic-control, fastest near crevice mouth and slowest near but not at deepest site. Corrosion initiation was observed, closely related to pearlite nodules with larger interlamellar spacing and different lamellar directions, inducing deep attack. |
| first_indexed | 2024-12-20T15:01:28Z |
| format | Article |
| id | doaj.art-6df2cc0533234b63a9e2e37615a5e35f |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-20T15:01:28Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-6df2cc0533234b63a9e2e37615a5e35f2022-12-21T19:36:39ZengElsevierJournal of Materials Research and Technology2238-78542022-01-011618561874Crevice corrosion of U75V high-speed rail steel with varying crevice gap size by in-situ monitoringWeichen Xu0Yu Deng1Binbin Zhang2Jie Zhang3Zhongbo Peng4Baorong Hou5Jizhou Duan6Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, People's Republic of China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, People's Republic of China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China; Corresponding author.Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, People's Republic of China; School of Shipping and Naval Architecture, Chongqing Jiaotong University, Chongqing, 400074, People's Republic of ChinaKey Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, People's Republic of China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, People's Republic of China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, ChinaKey Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, People's Republic of China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, People's Republic of China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China; Corresponding author.School of Shipping and Naval Architecture, Chongqing Jiaotong University, Chongqing, 400074, People's Republic of ChinaKey Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, People's Republic of China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, People's Republic of China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, ChinaKey Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, People's Republic of China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, People's Republic of China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, ChinaCrevice corrosion of high-speed rail steel U75V was studied with varying gap size by using self-designed device. Increasing gap size inhibited exterior cathodic reduction reaction of oxygen, inducing decrease of potential difference between interior and exterior. Gap size decrease after increase induced increase of potential difference after decrease, not completely reversible because rust kept expanding, acting as weaker depolarizer than oxygen. Anodic dissolution of interior was under ohmic-control, fastest near crevice mouth and slowest near but not at deepest site. Corrosion initiation was observed, closely related to pearlite nodules with larger interlamellar spacing and different lamellar directions, inducing deep attack.http://www.sciencedirect.com/science/article/pii/S2238785421015593U75VCrevice corrosionRail footVarying gap sizePearlite nodule |
| spellingShingle | Weichen Xu Yu Deng Binbin Zhang Jie Zhang Zhongbo Peng Baorong Hou Jizhou Duan Crevice corrosion of U75V high-speed rail steel with varying crevice gap size by in-situ monitoring Journal of Materials Research and Technology U75V Crevice corrosion Rail foot Varying gap size Pearlite nodule |
| title | Crevice corrosion of U75V high-speed rail steel with varying crevice gap size by in-situ monitoring |
| title_full | Crevice corrosion of U75V high-speed rail steel with varying crevice gap size by in-situ monitoring |
| title_fullStr | Crevice corrosion of U75V high-speed rail steel with varying crevice gap size by in-situ monitoring |
| title_full_unstemmed | Crevice corrosion of U75V high-speed rail steel with varying crevice gap size by in-situ monitoring |
| title_short | Crevice corrosion of U75V high-speed rail steel with varying crevice gap size by in-situ monitoring |
| title_sort | crevice corrosion of u75v high speed rail steel with varying crevice gap size by in situ monitoring |
| topic | U75V Crevice corrosion Rail foot Varying gap size Pearlite nodule |
| url | http://www.sciencedirect.com/science/article/pii/S2238785421015593 |
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