Corrosion behavior and mechanism of Cr and Cu alloy weathering steel in simulated marine atmospheric environment
This study developed a novel Cr and Cu alloyed weathering steel, Q345qENH steel, designed for coastal atmospheric environments. A comparative corrosion analysis was conducted between Q345qENH and Q345qd steel using various techniques, including metallography, corrosion kinetics, morphology observati...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425002285 |
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| _version_ | 1823864437073772544 |
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| author | Yin Chenghui Zhang Xin Wang Shuliu Cheng Junhang Zhang Hao Yu Qiang Xiao Kui |
| author_facet | Yin Chenghui Zhang Xin Wang Shuliu Cheng Junhang Zhang Hao Yu Qiang Xiao Kui |
| author_sort | Yin Chenghui |
| collection | DOAJ |
| description | This study developed a novel Cr and Cu alloyed weathering steel, Q345qENH steel, designed for coastal atmospheric environments. A comparative corrosion analysis was conducted between Q345qENH and Q345qd steel using various techniques, including metallography, corrosion kinetics, morphology observation, XRD, and electrochemical tests. Results show that Q345qENH exhibits superior corrosion resistance in simulated marine conditions compared to Q345qd, with the rust Layer Structure becoming more protective over time. The rust layer on Q345qENH forms a dual-layer structure, consisting of an inner Cr and Cu-rich layer and an outer γ-FeOOH/β-FeOOH layer. XRD analysis revealed an increasing α∗/γ∗ ratio over time. The corrosion mechanism indicates that Cr and Cu initially promote corrosion by forming oxides, but as corrosion progresses, Cr binds with α-FeOOH to form dense oxides like FeCr₂O₄ and α-(Fe, Cr)OOH, which protect the steel by limiting access to corrosive media. |
| format | Article |
| id | doaj-art-d389f78ceb2848d583ac7cec94414832 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-d389f78ceb2848d583ac7cec944148322025-02-09T05:00:31ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013530983106Corrosion behavior and mechanism of Cr and Cu alloy weathering steel in simulated marine atmospheric environmentYin Chenghui0Zhang Xin1Wang Shuliu2Cheng Junhang3Zhang Hao4Yu Qiang5Xiao Kui6Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, ChinaTesting Center of University of Science and Technology Beijing Co. Ltd., Beijing, 100083, ChinaInstitute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, ChinaInstitute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, ChinaInstitute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, ChinaIron and Steel Research Institute, Hunan Valin Lianyuan Iron & Steel Co., Ltd., Loudi, 417000, ChinaInstitute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China; Corresponding author.This study developed a novel Cr and Cu alloyed weathering steel, Q345qENH steel, designed for coastal atmospheric environments. A comparative corrosion analysis was conducted between Q345qENH and Q345qd steel using various techniques, including metallography, corrosion kinetics, morphology observation, XRD, and electrochemical tests. Results show that Q345qENH exhibits superior corrosion resistance in simulated marine conditions compared to Q345qd, with the rust Layer Structure becoming more protective over time. The rust layer on Q345qENH forms a dual-layer structure, consisting of an inner Cr and Cu-rich layer and an outer γ-FeOOH/β-FeOOH layer. XRD analysis revealed an increasing α∗/γ∗ ratio over time. The corrosion mechanism indicates that Cr and Cu initially promote corrosion by forming oxides, but as corrosion progresses, Cr binds with α-FeOOH to form dense oxides like FeCr₂O₄ and α-(Fe, Cr)OOH, which protect the steel by limiting access to corrosive media.http://www.sciencedirect.com/science/article/pii/S2238785425002285Marine atmospheric environmentWeathering steelRust layerCorrosion mechanism |
| spellingShingle | Yin Chenghui Zhang Xin Wang Shuliu Cheng Junhang Zhang Hao Yu Qiang Xiao Kui Corrosion behavior and mechanism of Cr and Cu alloy weathering steel in simulated marine atmospheric environment Journal of Materials Research and Technology Marine atmospheric environment Weathering steel Rust layer Corrosion mechanism |
| title | Corrosion behavior and mechanism of Cr and Cu alloy weathering steel in simulated marine atmospheric environment |
| title_full | Corrosion behavior and mechanism of Cr and Cu alloy weathering steel in simulated marine atmospheric environment |
| title_fullStr | Corrosion behavior and mechanism of Cr and Cu alloy weathering steel in simulated marine atmospheric environment |
| title_full_unstemmed | Corrosion behavior and mechanism of Cr and Cu alloy weathering steel in simulated marine atmospheric environment |
| title_short | Corrosion behavior and mechanism of Cr and Cu alloy weathering steel in simulated marine atmospheric environment |
| title_sort | corrosion behavior and mechanism of cr and cu alloy weathering steel in simulated marine atmospheric environment |
| topic | Marine atmospheric environment Weathering steel Rust layer Corrosion mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425002285 |
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