Activation mechanism of Al-Zn-In-Mg-Ti-RE (Ce, Y) sacrificial anodes: Impact of heat treatments on microstructure, electrochemical properties, and dissolution morphology
文献类型：期刊论文
| 作者 | Geng, Yahui1,2,3,5; Jiang, Quantong1,2,3,5; Chu, Zhenhua4; Zhai, Xiaofan1,2,3,5; Lu, Dongzhu1,2,3,5; Liu, Nazhen1,2,3,5; Duan, Jizhou1,2,3,5; Hou, Baorong1,2,3,5 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2025-12-10 |
| 卷号 | 1048页码:17 |
| 关键词 | Sacrificial anode Al-Zn-In-Mg-Ti Rare earth Current efficiency Heat treatment Uniform dissolution |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2025.185198 |
| 通讯作者 | Jiang, Quantong(jiangquantong@qdio.ac.cn) |
| 英文摘要 | The activation mechanism of Al-Zn-In-Mg-Ti-Ce and Al-Zn-In-Mg-Ti-Y was thoroughly investigated. The effects of solution treatments followed by quenching, annealing, and quenching-aging on their microstructure, electrochemical properties, dissolution morphology, and current efficiency were investigated. The results indicated that the rare earth precipitates do not dissolve preferentially as anodic phases. Instead, they were first oxidized into cathodic phases with higher potential, which subsequently promoted the dissolution of the aluminum matrix and thereby activated the sacrificial anodes. The non-uniform dissolution morphologies in both cast anodes were attributed to uneven activation caused by uneven volume rare earth precipitates. Among the three heat treatment methods, quenching-aging treatment provided the most significant improvement in dissolution uniformity for both rare earth anodes, with the Al-Zn-In-Mg-Ti-Ce anode additionally exhibiting excellent dissolution behavior characterized by layered stripping. Meanwhile, both anodes maintained current efficiencies above 90 %. These improvements resulted from the quenching-aging treatment's dual effects of reducing anode grain size while simultaneously enhancing the uniformity of current conduction within the anode by significantly improving the homogeneity and dispersion of dislocation distribution. Furthermore, the Al2Zn2Ce precipitates in Al-Zn-In-MgTi-Ce anodes exhibited high-temperature instability, readily decomposing and transforming into Al11Ce3 under elevated temperatures. The reformation of Al2Zn2Ce occurred exclusively during slow-cooling annealing process due to the substantial kinetic barriers involved. |
| WOS关键词 | CATHODIC PROTECTION ; CORROSION BEHAVIOR ; ALLOY ; RESISTANCE ; EFFICIENCY ; ELEMENTS ; SILICON ; SRB |
| 资助项目 | National Laboratory for Marine Science and Technology[2021WHZZB2301] ; Overseas Science and Education Centers of Bureau of International Cooperation Chinese Academy of Sciences[121311KYSB20210005] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001630542200021 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204354]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Jiang, Quantong |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Lab Adv Marine Mat, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Sanya Inst Ocean Ecoenvironm Engn, Zhenzhou Rd, Sanya 572000, Peoples R China 3.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China 4.Shanghai Ocean Univ, Coll Engn Sci & Technol, 999 Hucheng Ring Rd, Shanghai 201306, Peoples R China 5.Laoshan Lab, 168 Wenhai Rd, Qingdao 266237, Peoples R China |
| 推荐引用方式 GB/T 7714 | Geng, Yahui,Jiang, Quantong,Chu, Zhenhua,et al. Activation mechanism of Al-Zn-In-Mg-Ti-RE (Ce, Y) sacrificial anodes: Impact of heat treatments on microstructure, electrochemical properties, and dissolution morphology[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2025,1048:17. |
| APA | Geng, Yahui.,Jiang, Quantong.,Chu, Zhenhua.,Zhai, Xiaofan.,Lu, Dongzhu.,...&Hou, Baorong.(2025).Activation mechanism of Al-Zn-In-Mg-Ti-RE (Ce, Y) sacrificial anodes: Impact of heat treatments on microstructure, electrochemical properties, and dissolution morphology.JOURNAL OF ALLOYS AND COMPOUNDS,1048,17. |
| MLA | Geng, Yahui,et al."Activation mechanism of Al-Zn-In-Mg-Ti-RE (Ce, Y) sacrificial anodes: Impact of heat treatments on microstructure, electrochemical properties, and dissolution morphology".JOURNAL OF ALLOYS AND COMPOUNDS 1048(2025):17. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。