Optimal cerium microalloying enhances SASS/Q235 weld corrosion and antibacterial performance
文献类型：期刊论文
| 作者 | Liu, Xingbin1,2,3,4; Jiang, Quantong1,2,3,4; Li, Haojun1,2,3,4; Lu, Dongzhu1,2,3,4; Zhai, Xiaofan1,2,3,4; Liu, Nazhen1,2,3,4; Duan, Jizhou1,2,3,4; Hou, Baorong1,2,3,4 |
| 刊名 | ISCIENCE
 |
| 出版日期 | 2025-09-19 |
| 卷号 | 28期号:9页码:18 |
| DOI | 10.1016/j.isci.2025.113319 |
| 通讯作者 | Jiang, Quantong(jiangquantong@qdio.ac.cn) |
| 英文摘要 | Super austenitic stainless steels (SASS) face challenges like galvanic corrosion and antibacterial performance when welded to carbon steel (Q235) in marine environments. This study demonstrates that adding 1.0 wt% cerium (Ce) to SASS refines the heat-affected zone (HAZ) grain structure (from 7 mu m to 2 mu m), suppresses detrimental sigma-phase precipitation, and forms a dense oxide film. Electrochemical analyses confirmed this optimized composition increases charge-transfer resistance (to 2.2 x 10(3) Omega cm(2)) and reduces passivation current density (to 0.12 mu A/cm(2)), significantly enhancing corrosion resistance. Additionally, 1.0 wt% Ce disrupts sulfate-reducing bacteria (SRB) membranes, reducing survival to <1%. However, excess Ce (>= 1.5 wt%) forms coarse CeO2 particles, accelerating corrosion via porous films and micro-galvanic coupling. These findings provide a practical strategy for designing corrosion-resistant, antimicrobial welded joints in marine infrastructure. |
| WOS关键词 | HEAT-INPUT ; STAINLESS ; SIZE |
| 资助项目 | Qingdao Key Technology Research and Develop-ment Project[24-1-6-ghgg-2-hz] ; Wenhai Program of the S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology[2021WHZZB2301] ; Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City[2021CXLH0005] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001564291500001 |
| 出版者 | CELL PRESS |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203263]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Jiang, Quantong |
| 作者单位 | 1.Laoshan Lab Marine Corros & Protect Open Studio, 1 Wenhai Rd, Qingdao 266237, Peoples R China 2.Sanya Inst Ocean Ecoenvironm Engn, Sanya 572024, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, State Key Lab Adv Marine Mat, Qingdao 266071, Peoples R China 4.Qilu Univ Technol, Sch Mat Sci & Engn, 3501 Daxue Rd, Jinan 250353, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xingbin,Jiang, Quantong,Li, Haojun,et al. Optimal cerium microalloying enhances SASS/Q235 weld corrosion and antibacterial performance[J]. ISCIENCE,2025,28(9):18. |
| APA | Liu, Xingbin.,Jiang, Quantong.,Li, Haojun.,Lu, Dongzhu.,Zhai, Xiaofan.,...&Hou, Baorong.(2025).Optimal cerium microalloying enhances SASS/Q235 weld corrosion and antibacterial performance.ISCIENCE,28(9),18. |
| MLA | Liu, Xingbin,et al."Optimal cerium microalloying enhances SASS/Q235 weld corrosion and antibacterial performance".ISCIENCE 28.9(2025):18. |
入库方式： OAI收割
来源：海洋研究所
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