IMR OpenIR
Understanding the galvanic corrosion of the Q-phase/Al couple using SVET and SIET
Ikeuba, Alexander I.; Zhang, Bo; Wang, Jianqiu; Han, En-Hou; Ke, Wei
2019-07-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume35Issue:7Pages:1444-1454
AbstractThe 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.
KeywordQ-phase Galvanic corrosion Scanning vibrating electrode technique (SVET) Scanning ion-selective electrode technique (SIET) Energy dispersive X-ray spectroscopy (EDX)
Indexed BySCI
Language英语
WOS IDWOS:000466369600028
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80967
Collection中国科学院金属研究所
Recommended Citation
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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ikeuba, Alexander I.]'s Articles
[Zhang, Bo]'s Articles
[Wang, Jianqiu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ikeuba, Alexander I.]'s Articles
[Zhang, Bo]'s Articles
[Wang, Jianqiu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ikeuba, Alexander I.]'s Articles
[Zhang, Bo]'s Articles
[Wang, Jianqiu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.