Corrosion Behavior of 9 % Ni Steel for LNG Storage Tanks in 3.5 wt. % NaCl Solution
Qin, Ming1,2; Xu, Weichen1,3; Yang, Lihui1,3; Li, Yantao1,3
2018-07-01
发表期刊INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
ISSN1452-3981
卷号13期号:7页码:6537-6549
通讯作者Li, Yantao(ytli@qdio.ac.cn)
摘要The corrosion behavior of 9 % Ni steel in a 3.5 wt. % NaCl solution was investigated by electrochemical techniques including open circuit potential (OCP), potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS). The principal components and morphology of 9 % Ni steel and the resulting corrosion layer are analysed by metallographic evaluation, scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Raman spectroscopy, X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The results suggest that the anodic reaction is primarily the dissolution of the iron matrix and the cathodic process is mainly the reduction of oxygen. The corrosion resistance R-ct of 9 % Ni steel decreased with increasing immersion time and the corrosion layer did not provide protection. The outer section of the corrosion product consists mostly of lepidocrocite gamma-FeOOH, trace goethite alpha-FeOOH, and magnetite Fe3O4. The inner section is a nickel-rich layer, which is related to the alloying elements and reverted austenite. Moreover, the corrosion layer was found to accelerate the selective corrosion.
关键词9 % Ni steel corrosion electrochemical tests reverted austenite nickel-rich layer
DOI10.20964/2018.07.24
收录类别SCI
语种英语
资助项目National Key Research and Development Program of China[2017YFB0903700] ; National Science Foundation of China[41276074] ; National Key Research and Development Program of China[2017YFB0903700] ; National Science Foundation of China[41276074]
WOS研究方向Electrochemistry
WOS类目Electrochemistry
WOS记录号WOS:000441819300029
出版者ESG
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/159884
专题海洋环境腐蚀与生物污损重点实验室
通讯作者Li, Yantao
作者单位1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Open Studio Marine Corros & Protect, Qingdao 266071, Peoples R China
第一作者单位中国科学院海洋研究所
通讯作者单位中国科学院海洋研究所
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Qin, Ming,Xu, Weichen,Yang, Lihui,et al. Corrosion Behavior of 9 % Ni Steel for LNG Storage Tanks in 3.5 wt. % NaCl Solution[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2018,13(7):6537-6549.
APA Qin, Ming,Xu, Weichen,Yang, Lihui,&Li, Yantao.(2018).Corrosion Behavior of 9 % Ni Steel for LNG Storage Tanks in 3.5 wt. % NaCl Solution.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,13(7),6537-6549.
MLA Qin, Ming,et al."Corrosion Behavior of 9 % Ni Steel for LNG Storage Tanks in 3.5 wt. % NaCl Solution".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 13.7(2018):6537-6549.
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