Insights into the role of H 2 O 2 on corrosion behavior of NiCu low alloy steel in simulated Beishan groundwater

doi:10.1016/j.jmrt.2024.05.255

IMR OpenIR

	Insights into the role of H 2 O 2 on corrosion behavior of NiCu low alloy steel in simulated Beishan groundwater
	Sun, Yupeng 1,2; Wei, Xin 1,2; Dong, Junhua 1,2; Li, Dongyun 1,2; Zhao, Hanyu 1,2; Chen, Nan 2; Yin, Qili 2; Ren, Qiying 2; Ke, Wei 3
通讯作者	Wei, Xin(xwei@imr.ac.cn) ; Dong, Junhua(jhdong@imr.ac.cn)
	2024-05-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	30 页码:8972-8985
摘要	Steel containers used for geological disposal of high-level radioactive waste will be gradually thinned or even perforated due to corrosion, which will lead to radiolysis of nuclides when they contact with infiltrated groundwater and produce H 2 O 2 . This work focused on investigating the influence of H 2 O 2 concentration (0%, 0.001%, 0.01%, 0.1% and 1% by volume) on the corrosion behavior of NiCu low alloy steel as the candidate material for containers was comparatively studied by combining corrosion weight loss test, corrosion product analysis, morphology characterization, thermodynamic analysis and electrochemical measurements. As [H 2 O 2 ] = 0.001%, H 2 O 2 inhibited the formation of gamma-FeOOH and enhanced the compactness of rust layer, which effectively blocked the migration of aggressive ions and slowed down the cathodic reduction reaction of rust, thus improving the corrosion resistance of NiCu steel. With the increase of [H 2 O 2 ] (0.01% -> 1%), the cathodic process of NiCu steel corrosion was promoted by the increase of dissolved oxygen involved in cathodic depolarization. Meanwhile, the relative content of Fe 3 O 4 in the rust increased, while Fe 6 (OH) 12 SO 4 and Fe 6 (OH) 12 CO 3 decreased obviously, which led to the loose and porous rust layer, thus accelerating the corrosion of NiCu steel.
关键词	Geological disposal of HLW Low alloy steel Groundwater Corrosion behavior
资助者	National Natural Science Foundation of China
DOI	10.1016/j.jmrt.2024.05.255
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[U1867216] ; National Natural Science Foundation of China[51701222] ; National Natural Science Foundation of China[52173304]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001249487400001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/187156
专题	中国科学院金属研究所
通讯作者	Wei, Xin; Dong, Junhua
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Environm Corros Res Ctr Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Sun, Yupeng,Wei, Xin,Dong, Junhua,et al. Insights into the role of H 2 O 2 on corrosion behavior of NiCu low alloy steel in simulated Beishan groundwater[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,30:8972-8985.
APA	Sun, Yupeng.,Wei, Xin.,Dong, Junhua.,Li, Dongyun.,Zhao, Hanyu.,...&Ke, Wei.(2024).Insights into the role of H 2 O 2 on corrosion behavior of NiCu low alloy steel in simulated Beishan groundwater.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,30,8972-8985.
MLA	Sun, Yupeng,et al."Insights into the role of H 2 O 2 on corrosion behavior of NiCu low alloy steel in simulated Beishan groundwater".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30(2024):8972-8985.