Under-Deposit Corrosion of Carbon Steel Beneath Full Coverage of CaCO3 Deposit Layer under Different Atmospheres

doi:10.1007/s11665-021-05926-7

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	Under-Deposit Corrosion of Carbon Steel Beneath Full Coverage of CaCO3 Deposit Layer under Different Atmospheres
	Pang, Lin 2,3; Wang, Zhengbin 2; Emori, Wilfred 1; Zheng, Yugui 2
刊名	JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
	2021-06-01
页码	12
关键词	CaCO3 deposit layer carbon dioxide carbon steel dissolved oxygen wire beam electrode under-deposit corrosion
ISSN号	1059-9495
DOI	10.1007/s11665-021-05926-7
通讯作者	Wang, Zhengbin(zbwang12s@imr.ac.cn)
英文摘要	The under-deposit corrosion of carbon steel beneath the full coverage of CaCO3 deposit layer in 3.5 wt.% NaCl solution under different atmospheres has been investigated by electrochemical tests, wire beam electrode technique and morphology characterization. The results indicate that dissolved O-2 and CO2 can affect the corrosion of carbon steel under the CaCO3 deposit layer by influencing the cathodic reactions, with the oxygen reduction reaction and reduction reaction of H2CO3 being the dominant cathodic reactions for the systems without and with CO2 injection, respectively. Dissolved O-2 can enhance the localized under-deposit corrosion tendency by forming oxygen concentration cells beneath the deposit layer, while its effect on the general under-deposit corrosion rate depends on the main cathodic reactions. Under atmospheres without CO2 injection, increased concentration of dissolved O-2 can accelerate the general corrosion rate by promoting the oxygen reduction reaction, and it can decrease the general corrosion rate under CO2-purged atmospheres by decreasing the amounts of H2CO3 for the cathodic reaction.
资助项目	Natural Science Foundation of Liaoning Province[2019BS249] ; Opening Project of Material Corrosion and Protection Key Laboratory of Sichuan Province[2017CL18]
WOS研究方向	Materials Science
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000656822500003
资助机构	Natural Science Foundation of Liaoning Province ; Opening Project of Material Corrosion and Protection Key Laboratory of Sichuan Province
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/160371]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Zhengbin
作者单位	1.Sichuan Univ Sci & Engn, Sch Mat Sci & Engn, Zigong 643000, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, 62 Wencui Rd, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Pang, Lin,Wang, Zhengbin,Emori, Wilfred,et al. Under-Deposit Corrosion of Carbon Steel Beneath Full Coverage of CaCO3 Deposit Layer under Different Atmospheres[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2021:12.
APA	Pang, Lin,Wang, Zhengbin,Emori, Wilfred,&Zheng, Yugui.(2021).Under-Deposit Corrosion of Carbon Steel Beneath Full Coverage of CaCO3 Deposit Layer under Different Atmospheres.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,12.
MLA	Pang, Lin,et al."Under-Deposit Corrosion of Carbon Steel Beneath Full Coverage of CaCO3 Deposit Layer under Different Atmospheres".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2021):12.