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Effect of Tensile Strength on the Microstructure of Graphite Impregnated with Salt Revealed by In Situ Synchrotron-Based Two-Dimensional X-ray Diffraction
Wang, JM; Feng, SL; Yang, YG; Tang, H; Liu, XD; Xia, HH; Wang, Y; Zhou, XT
2019
Source PublicationACS OMEGA
ISSN2470-1343
Volume4Issue:2Pages:4304—4311
Subtype期刊论文
AbstractOwing to the inhomogeneous distribution of FLiNaK salt impregnated into graphite which is observed by scanning electron microscopy and an element probe micro-analyzer, a map scan of in situ real-time tensile synchrotron-based two-dimensional X-ray diffraction (2D-XRD) at several fixed external forces was implemented to reveal the local microstructure evolution of graphite and FLiNaK salt. Notably, a stress concentration area (SCA), that is, the main interaction area between graphite and salt, was found and then transformed from one region to another region because of the unbalanced squeeze interaction between graphite and FLiNaK salt with the increase of external force. During the external stress load process, a smaller grain size, poorer crystallinity of graphite and a larger grain size, better crystallinity of FLiNaK salt appear in the SCA; meanwhile, the changes of crystallographic preferred orientation of FLiNaK salt domains in SCA imply that the external load force makes better the ordered stacking of the larger crystal grains of the FLiNaK salt impregnated into graphite. Most importantly, we have found for the first time that the fracture position of graphite impregnated with FLiNaK salt always occurs near the SCA rather than at a fixed region under the external stress load. Thus, the present study not only helps to reveal the interaction mechanism between graphite and FLiNaK salt under the external stress load but also contributes to accurately predict and analyze the stress state of components, which would have an effective impact on the design of a molten salt reactor and the reliability of the component safety assessment.
KeywordRAMAN MICROPROBE GRAPHENE OXIDE MOLTEN PERFORMANCE INFILTRATION CORROSION EVOLUTION
DOI10.1021/acsomega.8b03329
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/31575
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Chinese Acad Sci, Shanghai Inst Appl Phys, 2019 Jialuo Rd, Shanghai 201800, Peoples R China;
2.Shandong Univ, Sch Phys, Jinan 250100, Shandong, Peoples R China;
3.Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China;
4.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Zhangjiang Lab, Shanghai Adv Res Inst, 239 Zhangheng Rd, Shanghai 201204, Peoples R China;
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, JM,Feng, SL,Yang, YG,et al. Effect of Tensile Strength on the Microstructure of Graphite Impregnated with Salt Revealed by In Situ Synchrotron-Based Two-Dimensional X-ray Diffraction[J]. ACS OMEGA,2019,4(2):4304—4311.
APA Wang, JM.,Feng, SL.,Yang, YG.,Tang, H.,Liu, XD.,...&Zhou, XT.(2019).Effect of Tensile Strength on the Microstructure of Graphite Impregnated with Salt Revealed by In Situ Synchrotron-Based Two-Dimensional X-ray Diffraction.ACS OMEGA,4(2),4304—4311.
MLA Wang, JM,et al."Effect of Tensile Strength on the Microstructure of Graphite Impregnated with Salt Revealed by In Situ Synchrotron-Based Two-Dimensional X-ray Diffraction".ACS OMEGA 4.2(2019):4304—4311.
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