The effect of rust layer damage on the corrosion resistance of Q420 bridge steels
The rust layer is very important for bridge weathering steels. The compactness, composition and structure of rust layers are the main factors for the corrosion resistance. The rust layer may be damaged to various extents in practical service environment. The effect of damage on the rust layer is sig...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424030059 |
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| author | Zexian Wang Weichen Xu Binbin Zhang Junyi Gao Canming Li Guobao Li Rongling Zhang Baorong Hou |
| author_facet | Zexian Wang Weichen Xu Binbin Zhang Junyi Gao Canming Li Guobao Li Rongling Zhang Baorong Hou |
| author_sort | Zexian Wang |
| collection | DOAJ |
| description | The rust layer is very important for bridge weathering steels. The compactness, composition and structure of rust layers are the main factors for the corrosion resistance. The rust layer may be damaged to various extents in practical service environment. The effect of damage on the rust layer is significant for assessing and predicting the corrosion resistance and durability of bridge weathering steels. A new experimental method has been introduced in this work to achieve different levels of artificial damage on the rust layer. A blade was used to control the damaged area and depth of the rust layer. It was found that both the bare and rusted surface of Q420qDNH bridge steel exhibited better corrosion resistance than Q420qDZ25 bridge steel, mainly due to the larger amount of alloying elements and α-FeOOH in Q420qDNH. The corrosion resistance of both steels exhibited a declining trend as the level of rust layer damage progressed from PM (partially mildly damaged) to PS (partially severely damaged), OM (overall mildly damaged), and OS (overall severely damaged). The rust layer resistance of Q420qDNH bridge steel was more sensitive to rust layer damage as a result of uneven distribution of alloying elements and oxidizing agents between outer and inner rust layer. When the damage reached a certain level, the corrosion resistance of both steels decreased sharply. |
| format | Article |
| id | doaj-art-638eaf4250cd4653ba98659bc07fccf3 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-638eaf4250cd4653ba98659bc07fccf32025-01-19T06:25:48ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013418941907The effect of rust layer damage on the corrosion resistance of Q420 bridge steelsZexian Wang0Weichen Xu1Binbin Zhang2Junyi Gao3Canming Li4Guobao Li5Rongling Zhang6Baorong Hou7Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, PR ChinaKey Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, PR China; Institute of Marine Corrosion Protection, Guangxi Academy of Sciences, Nanning, 530007, PR China; Corresponding author. Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, PR China.Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, PR China; Institute of Marine Corrosion Protection, Guangxi Academy of Sciences, Nanning, 530007, PR ChinaKey Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, PR China; School of Materials Science and Engineering, Qilu University of Technology, Jinan, 250353, PR ChinaShandong Iron and Steel Group Rizhao Co., Ltd., Rizhao, 276800, PR ChinaShandong Iron and Steel Group Rizhao Co., Ltd., Rizhao, 276800, PR ChinaNational and Provincial Joint Engineering Laboratory of Road & Bridge Disaster Prevention and Control, Lanzhou Jiaotong University, Lanzhou, 730070, PR ChinaKey Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, PR China; Institute of Marine Corrosion Protection, Guangxi Academy of Sciences, Nanning, 530007, PR ChinaThe rust layer is very important for bridge weathering steels. The compactness, composition and structure of rust layers are the main factors for the corrosion resistance. The rust layer may be damaged to various extents in practical service environment. The effect of damage on the rust layer is significant for assessing and predicting the corrosion resistance and durability of bridge weathering steels. A new experimental method has been introduced in this work to achieve different levels of artificial damage on the rust layer. A blade was used to control the damaged area and depth of the rust layer. It was found that both the bare and rusted surface of Q420qDNH bridge steel exhibited better corrosion resistance than Q420qDZ25 bridge steel, mainly due to the larger amount of alloying elements and α-FeOOH in Q420qDNH. The corrosion resistance of both steels exhibited a declining trend as the level of rust layer damage progressed from PM (partially mildly damaged) to PS (partially severely damaged), OM (overall mildly damaged), and OS (overall severely damaged). The rust layer resistance of Q420qDNH bridge steel was more sensitive to rust layer damage as a result of uneven distribution of alloying elements and oxidizing agents between outer and inner rust layer. When the damage reached a certain level, the corrosion resistance of both steels decreased sharply.http://www.sciencedirect.com/science/article/pii/S2238785424030059CorrosionQ420 bridge steelWeathering steelRust layer damageFeOOH |
| spellingShingle | Zexian Wang Weichen Xu Binbin Zhang Junyi Gao Canming Li Guobao Li Rongling Zhang Baorong Hou The effect of rust layer damage on the corrosion resistance of Q420 bridge steels Journal of Materials Research and Technology Corrosion Q420 bridge steel Weathering steel Rust layer damage FeOOH |
| title | The effect of rust layer damage on the corrosion resistance of Q420 bridge steels |
| title_full | The effect of rust layer damage on the corrosion resistance of Q420 bridge steels |
| title_fullStr | The effect of rust layer damage on the corrosion resistance of Q420 bridge steels |
| title_full_unstemmed | The effect of rust layer damage on the corrosion resistance of Q420 bridge steels |
| title_short | The effect of rust layer damage on the corrosion resistance of Q420 bridge steels |
| title_sort | effect of rust layer damage on the corrosion resistance of q420 bridge steels |
| topic | Corrosion Q420 bridge steel Weathering steel Rust layer damage FeOOH |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424030059 |
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