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Influence of Deteriorated Bentonite Sediments on the Corrosion Behavior of NiCu Low Alloy Steel
Wei, Xin1; Dong, Junhua1; Sun, Yupeng1,3; Chen, Nan1; Ren, Qiying1; Dhakal, Madhusudan1; Li, Xiaofang1; Ke, Wei2
Corresponding AuthorDong, Junhua(jhdong@imr.ac.cn)
2021-07-23
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages12
AbstractThe corrosion evolution of steel disposal container largely depends on the evolution of surrounding bentonite environment in the long-term geological disposal of high-level radioactive wastes. This study focused on the influence of the deteriorated bentonite sediments on the corrosion behavior of NiCu low alloy steel in the top supernatant and bottom slurry formed by Gaomiaozi bentonite and 0.05 M NaHCO3 + 0.1 M NaCl + 0.1 M Na2SO4 solution. In the top supernatant, the cathodic process of the steel corrosion was transformed from the reduction in oxygen to the reduction in ferric corrosion products with time as same as that in the blank solution. While in the bottom bentonite slurry, the cathodic process always maintained as the hydrogen evolution reaction due to the coverage of more bentonite sediments. Meanwhile, the corrosion rate of NiCu steel was obviously decreased. In addition, the localized corrosion tendency of the steel could also be reduced by the large amount of deteriorated bentonite sediments.
KeywordLow alloy steel Bentonite Corrosion behavior Corrosion products Electrochemical impedance spectroscopy (EIS)
Funding OrganizationNational Natural Science Foundation of China
DOI10.1007/s40195-021-01278-2
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[U1867216] ; National Natural Science Foundation of China[51701222] ; National Natural Science Foundation of China[51471175]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000676046800001
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159855
Collection中国科学院金属研究所
Corresponding AuthorDong, Junhua
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Environm Corros Ctr Mat, Inst Met Res, Shenyang 110016, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
Recommended Citation
GB/T 7714
Wei, Xin,Dong, Junhua,Sun, Yupeng,et al. Influence of Deteriorated Bentonite Sediments on the Corrosion Behavior of NiCu Low Alloy Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2021:12.
APA Wei, Xin.,Dong, Junhua.,Sun, Yupeng.,Chen, Nan.,Ren, Qiying.,...&Ke, Wei.(2021).Influence of Deteriorated Bentonite Sediments on the Corrosion Behavior of NiCu Low Alloy Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,12.
MLA Wei, Xin,et al."Influence of Deteriorated Bentonite Sediments on the Corrosion Behavior of NiCu Low Alloy Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2021):12.
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