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XAFS and SRGI-XRD studies of the local structure of tellurium corrosion of Ni-18%Cr alloy
Luo, M; Deng, SJ; Li, L; Song, F; Wang, LH; Li, ZJ; Jiang, Z
2019
Source PublicationNUCLEAR SCIENCE AND TECHNIQUES
ISSN1001-8042
Volume30Issue:10Pages:-
Subtype期刊论文
AbstractThe speciation and atomic structures of corrosion products in Ni-based alloys could provide basic information for understanding the Te corrosion mechanism. In this paper, two-dimensional synchrotron-radiation-induced grazing incidence X-ray diffraction was used to characterize the corrosion products of a Ni-18%Cr binary alloy at temperatures from 600 to 1000 degrees C. The results showed that a film of CrTe is preferentially formed when Te reacts with the Ni-based alloy at low temperatures (below 900 degrees C), while CrTe and Ni3Te2 are formed at 900 degrees C. Moreover, at a temperature of 1000 degrees C, a solid solution is formed without any changes in the Ni-Cr substrate lattice parameters. Furthermore, X-ray absorption fine structure and wavelet transform analyses were used to investigate the atomic local structure of Te. The investigation indicated that Te atoms diffuse into the Ni-Cr substrate to form a substitutional Ni-Cr-Te solid solution at 1000 degrees C. Notably, based on a discussion of the thermodynamics of the chemical reaction process, CrTe is considered to be the most stable and prevalent corrosion product due to its comparatively lower Gibbs free energy of formation. These results demonstrate that the Ni-18%Cr alloy is capable of resisting the diffusion of Te atoms.
KeywordDIFFUSION BEHAVIOR TE
DOI10.1007/s41365-019-0673-4
Indexed BySCI
Language英语
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/32276
Collection中科院上海应用物理研究所2011-2019年
Affiliation1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Fac, Shanghai 201204, Peoples R China;
2.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China;
3.Zhejiang Univ, Dept Mat Sci & Engn, Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China;
4.Chinese Acad Sci, Shanghai Inst Appl Phys, Ctr Thorium Molten Salts Reactor Syst, Shanghai 201800, Peoples R China;
5.Univ Chinese Acad Sci, Beijing 100049R, Peoples R China
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Luo, M,Deng, SJ,Li, L,et al. XAFS and SRGI-XRD studies of the local structure of tellurium corrosion of Ni-18%Cr alloy[J]. NUCLEAR SCIENCE AND TECHNIQUES,2019,30(10):-.
APA Luo, M.,Deng, SJ.,Li, L.,Song, F.,Wang, LH.,...&Jiang, Z.(2019).XAFS and SRGI-XRD studies of the local structure of tellurium corrosion of Ni-18%Cr alloy.NUCLEAR SCIENCE AND TECHNIQUES,30(10),-.
MLA Luo, M,et al."XAFS and SRGI-XRD studies of the local structure of tellurium corrosion of Ni-18%Cr alloy".NUCLEAR SCIENCE AND TECHNIQUES 30.10(2019):-.
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