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Corrosion Behaviour of Carbon Steel Fasteners in Neutral Chloride Solution
Daniel, Enobong Felix1,2; Dong, Junhua1,2; Li, Xiaofang1,2; Etim, Ini-Ibehe Nabuk3,5; Udoh, Inime Ime4; Ma, Rongyao1,2; Chen, Lei1,2; Wang, Changgang1,2
Corresponding AuthorDong, Junhua(jhdong@imr.ac.cn) ; Wang, Changgang(cgwang@imr.ac.cn)
2021-08-12
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages14
AbstractAn experimental model for simulating the corrosion of carbon steel fasteners (bolt and nut) composed of a contact carbon steel electrode (CCSE) and an exposed bare carbon steel plate electrode (BCSE) was designed. The effect of coupling on the corrosion process of the galvanically coupled carbon steel electrode was evaluated and compared with the self-corrosion process observed independently at the exposed and contact regions. Results obtained indicated that at an equal area ratio and uncoupled conditions, the corrosion rate is accelerated in the surface directly exposed to bulk solution compared to the bolt surface in contact with the nut. A coupling current was recorded when the exposed surface (BCSE) was electrically connected with the contact surface (CCSE); with the CCSE acting as the anode thereby suppressing the corrosion process in the exposed surface. By implication, the galvanic coupling between CCSE and BCSE increased the corrosion rate of CCSE. The difference in oxygen supply was responsible for the coupling effect observed in the system as there was no decrease in the solution pH. Moreover, varying the cathode-to-anode area (S-c/S-a) ratio significantly influenced the corrosion current density as increased S-c/S-a ratio resulted in an accelerated galvanic corrosion process. The corroded surfaces and interfaces were analysed using stereomicroscopy and scanning electron microscopy. X-ray diffractometry was adopted for corrosion product characterization. The results obtained showed supportive evidence of the corrosion behaviour in carbon steel fasteners.
KeywordBolt and nut Galvanic current density Zero resistance ammetry (ZRA) Coupling potential Differential aeration cell Carbon steel fasteners
Funding OrganizationNational Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Key Research Development Program of China
DOI10.1007/s40195-021-01284-4
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51801219] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2019193] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[KGFZD-135-19-02] ; National Key Research Development Program of China[2017YFB0702302]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000684498300002
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159333
Collection中国科学院金属研究所
Corresponding AuthorDong, Junhua; Wang, Changgang
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
4.Shenyang Ligong Univ, Sch Environm & Chem Engn, Shenyang 110159, Peoples R China
5.Akwa Ibom State Univ, Dept Marine Biol, PMB 1167, Uyo, Nigeria
Recommended Citation
GB/T 7714
Daniel, Enobong Felix,Dong, Junhua,Li, Xiaofang,et al. Corrosion Behaviour of Carbon Steel Fasteners in Neutral Chloride Solution[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2021:14.
APA Daniel, Enobong Felix.,Dong, Junhua.,Li, Xiaofang.,Etim, Ini-Ibehe Nabuk.,Udoh, Inime Ime.,...&Wang, Changgang.(2021).Corrosion Behaviour of Carbon Steel Fasteners in Neutral Chloride Solution.ACTA METALLURGICA SINICA-ENGLISH LETTERS,14.
MLA Daniel, Enobong Felix,et al."Corrosion Behaviour of Carbon Steel Fasteners in Neutral Chloride Solution".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2021):14.
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