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INFLUENCE OF pH VALUES AND CORROSION PRODUCTS ON LOW CARBON STEEL CORROSION SUSCEPTIBILITY IN BORATE BUFFER SOLUTION
Yang Jingfeng; Dong Junhua; Ke Wei; Chen Nan
Corresponding AuthorDong Junhua(jhdong@imr.ac.cn)
2011-02-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume47Issue:2Pages:152-156
AbstractLow carbon steel has been studied as one candidate material of the outer container used in the geological disposal of the high-level radioactive nuclear waste. The active/passive state of the steel is the most important factor in maintaining the service life of the container. The active state will ensure that the container achieve the designed life under general corrosion, and moreover, the passive state will degrade the container's life under stress corrosion cracking (SCC) caused by pitting corrosion. In the groundwater, a lot of chemical compositions have very complicated effects on the active/passive state of the low carbon steel. Among these factors, obviously, the pH values of the ground water and the corrosion products of the low carbon steel would be the most important factors. In this paper, the influences of pH values and corrosion products on the susceptibility of the low carbon steel in the deaerated borate buffer solutions were studied. The results showed that the corrosion product did not change the corrosion potential of the low carbon steel at a pH value of 8, which means that the steel was in the active state, while the corrosion product made the corrosion potentials of low carbon steel move to the passive state at pH values of 9 and 10. XPS and XRD analyses indicated that the corrosion products were composed of Fe(6)(OH)(12)B(4)O(7) and gamma-FeOOH. The low carbon steel with corrosion products was passivated more easily than the naked steel substrate.
Keywordborate buffer solution low carbon steel corrosion product active/passive potentiostat preparation
Funding OrganizationNational Natural Science Foundation of China
DOI10.3724/SP.J.1037.2010.00439
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51071160]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000288568700004
PublisherSCIENCE CHINA PRESS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/105251
Collection中国科学院金属研究所
Corresponding AuthorDong Junhua
AffiliationChinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Yang Jingfeng,Dong Junhua,Ke Wei,et al. INFLUENCE OF pH VALUES AND CORROSION PRODUCTS ON LOW CARBON STEEL CORROSION SUSCEPTIBILITY IN BORATE BUFFER SOLUTION[J]. ACTA METALLURGICA SINICA,2011,47(2):152-156.
APA Yang Jingfeng,Dong Junhua,Ke Wei,&Chen Nan.(2011).INFLUENCE OF pH VALUES AND CORROSION PRODUCTS ON LOW CARBON STEEL CORROSION SUSCEPTIBILITY IN BORATE BUFFER SOLUTION.ACTA METALLURGICA SINICA,47(2),152-156.
MLA Yang Jingfeng,et al."INFLUENCE OF pH VALUES AND CORROSION PRODUCTS ON LOW CARBON STEEL CORROSION SUSCEPTIBILITY IN BORATE BUFFER SOLUTION".ACTA METALLURGICA SINICA 47.2(2011):152-156.
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