Atmospheric Corrosion Behavior of Q235 Steel Exposed to the Subtropical Marine Environment in the East China Sea for Two Years
文献类型：期刊论文
| 作者 | Chen, Tianxing1,4; Yang, Lihui1,2,3; Liu, Cong3; Zhang, Tianlong1; Chen, Shibo1,4; Deng, Xiaoyan4; Sun, Liang4 |
| 刊名 | MATERIALS
 |
| 出版日期 | 2026-03-18 |
| 卷号 | 19期号:6页码:18 |
| 关键词 | subtropical marine atmosphere carbon steel atmospheric corrosion corrosion behavior |
| DOI | 10.3390/ma19061189 |
| 通讯作者 | Yang, Lihui(lhyang@qdio.ac.cn) ; Liu, Cong(liuchong1986104@126.com) ; Deng, Xiaoyan(deng_xiao_yan@126.com) |
| 英文摘要 | The corrosion behavior and mechanism of Q235 steel during a two-year exposure to the subtropical marine atmospheric environment on an offshore platform in the East China Sea were investigated in this study. Methods including corrosion weight loss measurement, macro/micro-morphological observation (using a digital camera, SEM, and 3D-CLSM), composition analysis (XRD and XPS), and electrochemical tests (EIS and Tafel polarization curves) were employed to systematically examine corrosion kinetics, rust layer evolution, and electrochemical performance. The results indicated that the corrosion rate of Q235 steel initially increased and subsequently decreased with prolonged exposure, with the atmospheric corrosivity reaching CX level as defined (according to the ISO 9223 standard). The corrosion products transitioned from an early-stage rust layer predominantly consisting of gamma-FeOOH to a later-stage layer primarily composed of alpha-FeOOH and Fe3O4. XPS analyses revealed that both the alpha*/gamma* ratio and the Fe(II)/Fe(III) ratio increased over time, demonstrating a progressive improvement in the protective properties of the rust layer. The polarization resistance of the rust layer gradually rose, while the corrosion current density declined significantly, further confirming the enhanced stability and protective performance of the rust layer following long-term exposure. Chloride ions accumulated at defects within the rust layer, inducing local acidification, which played a key role in promoting the initiation and propagation of pitting corrosion. This study elucidated the corrosion behavior and mechanism of Q235 steel in the marine atmospheric environment of the East China Sea. Despite the increase in exposure time from 6 to 24 months, during which the electrochemical stability of the rust layer enhanced over time, it failed to prevent the initiation and propagation of severe localized corrosion-an issue of critical importance for load-bearing structures. The findings provide important theoretical and data support for service-life assessment and corrosion protection design of offshore photovoltaic steel structures. |
| WOS关键词 | CARBON-STEEL ; CR ; MECHANISM ; KINETICS |
| 资助项目 | National Key R&D Program of China[2024YFB4207000] ; Wenhai Program of the S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2021WHZZB2304] ; Southwest Institute of Technology and Engineering Cooperation Fund[HDHDW59A010204] ; China National Scientific Seafloor Observatory[2017-000030-73-01-002437] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001726023200001 |
| 出版者 | MDPI |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/205060]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Yang, Lihui; Liu, Cong; Deng, Xiaoyan |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, State Key Lab Adv Marine Mat, Qingdao 266071, Peoples R China 2.Qingdao Marine Sci & Technol Ctr, Qingdao 266237, Peoples R China 3.Southwest Inst Technol & Engn, Chongqing 400039, Peoples R China 4.Qingdao Univ Sci & Technol, Sch Environm & Safety Engn, Qingdao 266042, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Tianxing,Yang, Lihui,Liu, Cong,et al. Atmospheric Corrosion Behavior of Q235 Steel Exposed to the Subtropical Marine Environment in the East China Sea for Two Years[J]. MATERIALS,2026,19(6):18. |
| APA | Chen, Tianxing.,Yang, Lihui.,Liu, Cong.,Zhang, Tianlong.,Chen, Shibo.,...&Sun, Liang.(2026).Atmospheric Corrosion Behavior of Q235 Steel Exposed to the Subtropical Marine Environment in the East China Sea for Two Years.MATERIALS,19(6),18. |
| MLA | Chen, Tianxing,et al."Atmospheric Corrosion Behavior of Q235 Steel Exposed to the Subtropical Marine Environment in the East China Sea for Two Years".MATERIALS 19.6(2026):18. |
入库方式： OAI收割
来源：海洋研究所
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