Understanding the galvanic corrosion of the Q-phase/Al couple using SVET and SIET
文献类型：期刊论文
| 作者 | Ikeuba, Alexander I.1,2,4,5; Zhang, Bo3,4,5; Wang, Jianqiu5; Han, En-Hou5; Ke, Wei5 |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2019-07-01 |
| 卷号 | 35期号:7页码:1444-1454 |
| 关键词 | Q-phase Galvanic corrosion Scanning vibrating electrode technique (SVET) Scanning ion-selective electrode technique (SIET) Energy dispersive X-ray spectroscopy (EDX) |
| ISSN号 | 1005-0302 |
| DOI | 10.1016/j.jmst.2019.03.001 |
| 通讯作者 | Zhang, Bo(bxz011@imr.ac.cn) |
| 英文摘要 | The galvanic corrosion of the Q-phase/Al couple in 0.1 M NaCl solutions has been studied using the scanning vibrating electrode technique (SVET), the scanning ion-selective electrode technique (SIET) and energy dispersive X-ray spectroscopy (EDX). The galvanic corrosion of the Q-phase/Al couple was found to be dependent on pH and immersion time. Current density maps obtained by SVET shows that the anodic oxidation processes emerge from Al in a localized manner in pH 2 and 6 solutions but is initiated in a uniform manner in pH 13 solution, whereas, the cathodic processes are more homogeneously distributed over the Q-phase at pH 2, 6 and 13. It is seen that the Q-phase remains cathodic in the Q-phase/Al couple in acidic, neutral and alkaline solutions indicating that the galvanic polarity of the Q-phase is independent of pH. The effect of the galvanic corrosion was largest at pH 2 and 13 compared to pH 6. The pH map obtained by SIET indicates that the galvanic activity of the Q-phase/Al couple proceeds via heavy alkalization of the Q-phase surface with the generation of appreciable amounts of OH-ions. The enrichment of Cu indicated by EDX is responsible for the observed cathodic activity of the Q-phase in the Q-phase/Al couple. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| 资助项目 | National Natural Science Foundation of China[51571201] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000466369600028 |
| 出版者 | JOURNAL MATER SCI TECHNOL |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/133294]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhang, Bo |
| 作者单位 | 1.Univ Calabar, Dept Pure & Appl Chem, PMB 1115, Calabar, Nigeria 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 4.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 5.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ikeuba, Alexander I.,Zhang, Bo,Wang, Jianqiu,et al. Understanding the galvanic corrosion of the Q-phase/Al couple using SVET and SIET[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(7):1444-1454. |
| APA | Ikeuba, Alexander I.,Zhang, Bo,Wang, Jianqiu,Han, En-Hou,&Ke, Wei.(2019).Understanding the galvanic corrosion of the Q-phase/Al couple using SVET and SIET.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(7),1444-1454. |
| MLA | Ikeuba, Alexander I.,et al."Understanding the galvanic corrosion of the Q-phase/Al couple using SVET and SIET".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.7(2019):1444-1454. |
入库方式： OAI收割
来源：金属研究所
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