Effect of Tensile Strength on the Microstructure of Graphite Impregnated with Salt Revealed by In Situ Synchrotron-Based Two-Dimensional X-ray Diffraction

doi:10.1021/acsomega.8b03329

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	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
刊名	ACS OMEGA
	2019
卷号	4 期号:2 页码:4304—4311
关键词	RAMAN MICROPROBE GRAPHENE OXIDE MOLTEN PERFORMANCE INFILTRATION CORROSION EVOLUTION
ISSN号	2470-1343
DOI	10.1021/acsomega.8b03329
文献子类	期刊论文
英文摘要	Owing 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.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31575]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, 2019 Jialuo Rd, Shanghai 201800, Peoples R China; 3.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Zhangjiang Lab, Shanghai Adv Res Inst, 239 Zhangheng Rd, Shanghai 201204, Peoples R China; 4.Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China; 5.Shandong Univ, Sch Phys, Jinan 250100, Shandong, Peoples R China;
推荐引用方式 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.