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Galvanic corrosion study between low alloy steel A508 and 309/308 L stainless steel dissimilar metals: A case study of the effects of oxide film and exposure time
Okonkwo, Bright O.1,2; Ming, Hongliang1; Meng, Fanjiang3; Wang, Jianqiu1; Xu, Xuelian3; Han, En-Hou1
Corresponding AuthorMing, Hongliang(hlming12s@imr.ac.cn) ; Wang, Jianqiu(wangjianqiu@imr.ac.cn)
2021-05-01
Source PublicationJOURNAL OF NUCLEAR MATERIALS
ISSN0022-3115
Volume548Pages:11
AbstractThe effects of oxide film and exposure time on the galvanic corrosion between low alloy steel (LAS) A508 and 309/308L stainless steel (SS) dissimilar metals were studied by several electrochemical techniques and surface composition analytical tools. The zero resistance ammeter (ZRA) result shows that the trend of galvanic corrosion current between the coupled LAS A508 and 309/308L SS changes with respect to exposure time. Furthermore, from the ZRA measurement, the quantitative relationship between galvanic current and dissolution rate of the coupled LAS A508 anode metal was established by statistical approach. Electrochemical impedance spectroscopy (EIS) results and analyses demonstrated that the increasing galvanic corrosion rate observed between the coupled dissimilar metals as exposure time prolonged was suppressed by the oxide film effect. The suppression occurred as a result of the transformation of unstable oxides to stable oxide forms, and the oxide film thickening phenomenon experienced on the LAS A508 surface as exposure time prolonged. Generally, a synergy between both effects was observed in this study. (c) 2021 Elsevier B.V. All rights reserved.
KeywordLow alloy steel Stainless steel ZRA XRD Galvanic corrosion Oxide film
Funding OrganizationNational Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Program of the Chinese Academy of Sciences
DOI10.1016/j.jnucmat.2021.152853
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51771211] ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-JSC012] ; Key Program of the Chinese Academy of Sciences[ZDRW-CN-2017-1]
WOS Research AreaMaterials Science ; Nuclear Science & Technology
WOS SubjectMaterials Science, Multidisciplinary ; Nuclear Science & Technology
WOS IDWOS:000635060500002
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/162301
Collection中国科学院金属研究所
Corresponding AuthorMing, Hongliang; Wang, Jianqiu
Affiliation1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Shanghai Nucl Engn Res & Design Inst Ltd Co, 29 Hongcao Rd, Shanghai 200233, Peoples R China
Recommended Citation
GB/T 7714
Okonkwo, Bright O.,Ming, Hongliang,Meng, Fanjiang,et al. Galvanic corrosion study between low alloy steel A508 and 309/308 L stainless steel dissimilar metals: A case study of the effects of oxide film and exposure time[J]. JOURNAL OF NUCLEAR MATERIALS,2021,548:11.
APA Okonkwo, Bright O.,Ming, Hongliang,Meng, Fanjiang,Wang, Jianqiu,Xu, Xuelian,&Han, En-Hou.(2021).Galvanic corrosion study between low alloy steel A508 and 309/308 L stainless steel dissimilar metals: A case study of the effects of oxide film and exposure time.JOURNAL OF NUCLEAR MATERIALS,548,11.
MLA Okonkwo, Bright O.,et al."Galvanic corrosion study between low alloy steel A508 and 309/308 L stainless steel dissimilar metals: A case study of the effects of oxide film and exposure time".JOURNAL OF NUCLEAR MATERIALS 548(2021):11.
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