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Impedance Spectra Characteristics of Fe-Cr Alloys in a Solid K2SO4-KCl Mixture at 600 degrees C and 650 degrees C
Lai, Y. B.1; Guo, P. Y.1,2; Sun, H.1; Shao, Y.1; Wang, Y. X.1; Qiao, Y. X.1; Zeng, C. L.2
Corresponding AuthorGuo, P. Y.(pyguo@just.edu.cn)
2018-08-01
Source PublicationINTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
ISSN1452-3981
Volume13Issue:8Pages:7827-7845
AbstractThe low temperature hot corrosion characteristics of Fe-10Cr and Fe-20Cr alloys is studied in solid 0.5K(2)SO(4)-0.5KCl mixture in air at 600 degrees C and 650 degrees C. A two-electrode system is arranged for electrochemical measurement, which has been proved effective in the study of solid-and molten-salt corrosion. EIS analysis discloses corrosion of Fe-Cr alloys goes through several different reaction stages during extended exposure, such as incubation, acceleration and catastrophic period. Additionally, all these stages are fitted by corresponding equivalent circuits and electrochemical elements, and simulation data of these models generally fits experimental data well. Different Cr content in Fe-based alloys has been investigated involving the active/oxidation process of metal Cr in solid 0.5K(2)SO(4)-0.5KCl mixture. Corrosion products in above-mentioned different stages are analyzed by scanning electron microscopy. The formation and depletion of protective scale in mixed salt is monitored. Corrosion rate and corrosion mechanism of Fe-10Cr and Fe-20Cr alloys are discussed, too.
KeywordElectrochemical impedance Fe-Cr solid salt two-electrode system
Funding OrganizationNational Natural Science Foundation of China ; China Scholarship Fund ; Jiangsu University of Science and Technology ; Postgraduate Research & Practice Innovation Program of Jiangsu Province
DOI10.20964/2018.08.03
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51201073] ; China Scholarship Fund ; Jiangsu University of Science and Technology[1624821607-5] ; Postgraduate Research & Practice Innovation Program of Jiangsu Province[KYCX17_1830]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000441821400048
PublisherESG
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/129197
Collection中国科学院金属研究所
Corresponding AuthorGuo, P. Y.
Affiliation1.Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Lai, Y. B.,Guo, P. Y.,Sun, H.,et al. Impedance Spectra Characteristics of Fe-Cr Alloys in a Solid K2SO4-KCl Mixture at 600 degrees C and 650 degrees C[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2018,13(8):7827-7845.
APA Lai, Y. B..,Guo, P. Y..,Sun, H..,Shao, Y..,Wang, Y. X..,...&Zeng, C. L..(2018).Impedance Spectra Characteristics of Fe-Cr Alloys in a Solid K2SO4-KCl Mixture at 600 degrees C and 650 degrees C.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,13(8),7827-7845.
MLA Lai, Y. B.,et al."Impedance Spectra Characteristics of Fe-Cr Alloys in a Solid K2SO4-KCl Mixture at 600 degrees C and 650 degrees C".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 13.8(2018):7827-7845.
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