IMR OpenIR
CORROSION BEHAVIOR OF GH3535 SUPERALLOY IN FLiNaK MOLTEN SALT
Liu Tao1,2; Dong Jiasheng2; Xie Guang2; Wang Yisheng3; Li Hui2; Li Zhijun4; Zhou Xingtai4; Lou Langhong2
Corresponding AuthorDong Jiasheng(djs@imrac.cn)
2015-09-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume51Issue:9Pages:1059-1066
AbstractAs one of the most promising next generation reactors, the molten salt breeder reactor (MSBR) with excellent inherence security has attracted more and more attentions in recent years due to energy shortage and the security problem of traditional nuclear reactor. The most significant service characteristic of the structural material used in MSBR is the existence of FLiNaK molten salt compared with other nuclear reactors. FLiNaK molten salt is very corrosive to the structural material in the reactor, and affects the safety operation of nuclear power plants. A polycrystalline Ni-Mo-Cr-Fe superalloy was developed and used as an important structural material in MSBR at Oak Ridge National Laboratory (ORNL), but the corrosion mechanism of the alloy in FLiNaK molten salt has not been determined since the study terminated in 1970's as some politic reasons. Alloy served in harsh environments, often using protective coating to improve the corrosion properties. While few works about the coating. corrosion resistance in FLiNaK molten salt were reported at present. Al2O3 and Cr2O3 coatings usually have excellent corrosion resistance in molten salt, such as sulphate, nitrate and halide molten salt. But, whether the oxide film has corrosion resistance in FLiNaK molten salt has not been determined. In this work, the corrosion mechanism of alloy in FLiNaK molten salt was studied by using immersion corrosion experiment through the method of SEM, EDS and XRD. The influence of Al2O3 coating on corrosion resistance in FLiNaK molten salt was also investigated. The results show that the Al2O3 coating does not affect the exsolution corrosion characteristics of Cr and Mo elements in FLiNaK molten salt at 700 degrees C for 400 h. The different is that naked alloy exhibits intergranular corrosion characteristic, and the alloy with Al2O3 coating exhibits spot corrosion characteristic. The Al2O3 coating cannot improve the corrosion resistance of the alloy in FLiNaK molten salt. The Al2O3 film dissolved in molten salt and resulted in the exposure of the alloy surface. The corrosion rate was increased since the formation of corrosion cell between oxide film and the exposed alloy surface.
KeywordGH3535 alloy FLiNaK molten salt Al2O3 coating corrosion
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000362617700004
PublisherSCIENCE PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/120957
Collection中国科学院金属研究所
Corresponding AuthorDong Jiasheng
Affiliation1.Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
3.AVIC China Natl South Aviat Ind Co Ltd, Power Branch, Zhuzhou 412002, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
Recommended Citation
GB/T 7714
Liu Tao,Dong Jiasheng,Xie Guang,et al. CORROSION BEHAVIOR OF GH3535 SUPERALLOY IN FLiNaK MOLTEN SALT[J]. ACTA METALLURGICA SINICA,2015,51(9):1059-1066.
APA Liu Tao.,Dong Jiasheng.,Xie Guang.,Wang Yisheng.,Li Hui.,...&Lou Langhong.(2015).CORROSION BEHAVIOR OF GH3535 SUPERALLOY IN FLiNaK MOLTEN SALT.ACTA METALLURGICA SINICA,51(9),1059-1066.
MLA Liu Tao,et al."CORROSION BEHAVIOR OF GH3535 SUPERALLOY IN FLiNaK MOLTEN SALT".ACTA METALLURGICA SINICA 51.9(2015):1059-1066.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu Tao]'s Articles
[Dong Jiasheng]'s Articles
[Xie Guang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu Tao]'s Articles
[Dong Jiasheng]'s Articles
[Xie Guang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu Tao]'s Articles
[Dong Jiasheng]'s Articles
[Xie Guang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.