Four-point method in evaluating the corrosion rate of secondary circuit structural materials in nuclear power plant

doi:10.1108/ACMM-09-2024-3091

IMR OpenIR

	Four-point method in evaluating the corrosion rate of secondary circuit structural materials in nuclear power plant
	Ji, Yuefei 1,2; Hao, Long 1,2; Wang, Jianqiu 1,3; Han, En-Hou 1,3; Ke, Wei 1
通讯作者	Hao, Long(lhao@imr.ac.cn)
	2024-11-18
发表期刊	ANTI-CORROSION METHODS AND MATERIALS
ISSN	0003-5599
页码	11
摘要	Purpose - The purpose of this paper is to optimize a suitable electrochemical method in evaluating the corrosion rate of structural materials of 20# carbon steel, P280GH carbon steel, 17-4PH stainless steel, 304 stainless steel and Alloy 690TT in high-temperature and high-pressure (HTHP) water of pressurized water reactor secondary circuit system. Design/methodology/approach - Weight-loss method has been used to obtain the corrosion rate value of each structural material in simulated HTHP water. Besides, linear polarization method and weak polarization curve-based three-point method and four-point method have been compared in obtaining a sound corrosion rate value from the potentiodynamic polarization curve. Scanning electron microscopy (SEM) and atomic force microscope have been used to characterize the microstructure and corrosion morphology of each structural material. Findings - Although there is deviation in gaining the corrosion rate value compared to weight-loss test, the weak polarization curve-based four- point method has been found to be a suitable electrochemical method in gaining corrosion rate value of structural materials in HTHP waters. Originality/value - This paper proposes a suitable and reliable electrochemical method in gaining the corrosion rate value of structural materials in HTHP waters. The proposed weak polarization curve-based four-point method provides a timesaving and high-efficient way in corrosion rate evaluation of secondary circuit structural materials and thus has a potential application in nuclear power plants.
关键词	Alkalizer Uniform corrosion High-temperature electrochemistry Secondary circuit
资助者	LingChuang Research Project of China National Nuclear Corporation
DOI	10.1108/ACMM-09-2024-3091
收录类别	SCI
语种	英语
资助项目	LingChuang Research Project of China National Nuclear Corporation
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001354592800001
出版者	EMERALD GROUP PUBLISHING LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191394
专题	中国科学院金属研究所
通讯作者	Hao, Long
作者单位	1.Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 3.Inst Corros Sci & Technol, Guangzhou, Peoples R China
推荐引用方式 GB/T 7714	Ji, Yuefei,Hao, Long,Wang, Jianqiu,et al. Four-point method in evaluating the corrosion rate of secondary circuit structural materials in nuclear power plant[J]. ANTI-CORROSION METHODS AND MATERIALS,2024:11.
APA	Ji, Yuefei,Hao, Long,Wang, Jianqiu,Han, En-Hou,&Ke, Wei.(2024).Four-point method in evaluating the corrosion rate of secondary circuit structural materials in nuclear power plant.ANTI-CORROSION METHODS AND MATERIALS,11.
MLA	Ji, Yuefei,et al."Four-point method in evaluating the corrosion rate of secondary circuit structural materials in nuclear power plant".ANTI-CORROSION METHODS AND MATERIALS (2024):11.