Corrosion Behaviour of Carbon Steel Fasteners in Neutral Chloride Solution

doi:10.1007/s40195-021-01284-4

CORC > 金属研究所 > 中国科学院金属研究所

	Corrosion Behaviour of Carbon Steel Fasteners in Neutral Chloride Solution
	Daniel, Enobong Felix 1,4; Dong, Junhua 1,4; Li, Xiaofang 1,4; Etim, Ini-Ibehe Nabuk 2,5; Udoh, Inime Ime 3; Ma, Rongyao 1,4; Chen, Lei 1,4; Wang, Changgang 1,4
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2021-08-12
页码	14
关键词	Bolt and nut Galvanic current density Zero resistance ammetry (ZRA) Coupling potential Differential aeration cell Carbon steel fasteners
ISSN号	1006-7191
DOI	10.1007/s40195-021-01284-4
通讯作者	Dong, Junhua(jhdong@imr.ac.cn) ; Wang, Changgang(cgwang@imr.ac.cn)
英文摘要	An 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.
资助项目	National 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研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号	WOS:000684498300002
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Key Research Development Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/159332]
专题	金属研究所_中国科学院金属研究所
通讯作者	Dong, Junhua; Wang, Changgang
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 3.Shenyang Ligong Univ, Sch Environm & Chem Engn, Shenyang 110159, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 5.Akwa Ibom State Univ, Dept Marine Biol, PMB 1167, Uyo, Nigeria
推荐引用方式 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.