Mesocarbon microbead densified matrix graphite A3-3 for fuel elements in molten salt reactors

Haoran Wang; Liujun XU; Yajuan Zhong; Xiaoyun Li; Hui TANG; Feng ZHANG; Xu YANG; Jun Lin; Zhiyong Zhu; Yan YOU; Junqiang Lu; Libing Zhu

doi:https://doi.org/10.1016/j.net.2020.10.018

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자료유형: 학술저널

저자정보: Haoran Wang (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) Liujun XU (Shanghai Nuclear Engineering Research & Design Institute Co., Ltd) Yajuan Zhong (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) Xiaoyun Li (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) Hui TANG (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) Feng ZHANG (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) Xu YANG (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) Jun Lin (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) Zhiyong Zhu (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) Yan YOU (Shanghai Nuclear Engineering Research & Design Institute Co., Ltd) Junqiang Lu (Shanghai Nuclear Engineering Research & Design Institute Co., Ltd) Libing Zhu (Shanghai Nuclear Engineering Research & Design Institute Co., Ltd)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제5호

발행연도: 2021.5

수록면: 1,569 - 1,579 (11page)

DOI: https://doi.org/10.1016/j.net.2020.10.018

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This study aims to provide microstructural characterization for the matrix graphite which molten saltreactors (MSRs) use, and improve resistance to molten salt infiltration of the matrix graphite for fuelelements. Mesocarbon microbeads (MCMB) densified matrix graphite A3-3 (MDG) was prepared by aquasi-isostatic pressure process. After densification by MCMBs with average particle sizes of 2, 10, and16 mm, the pore diameter of A3-3 decreased from 924 nm to 484 nm, 532 nm, and 778 nm, respectively. Through scanning electron microscopy, the cross-section energy spectrum and time-of-flight secondaryion mass spectrometry, resistance levels of the matrix graphite to molten salt infiltration were analyzed. The results demonstrate that adding a certain proportion of MCMB powders can improve the antiinfiltrationability of A3-3. Meanwhile, the closer the particle size of MCMB is to the pore diameter ofA3-3, the smaller the average pore diameter of MDG and the greater the densification. As a matrixgraphite of fuel elements in MSR was involved, the thermal and mechanical properties of matrix graphiteMDG were also studied. When densified by the MCMB matrix graphite, MDGs can meet the molten saltanti-infiltration requirements for MSR operation.

#Molten salt reactor #Fuel element #Matrix graphite #Mesocarbon microbead (MCMB) #FLiBe infiltration

참고문헌 (24)

참고문헌 신청

J. Serp / 2014 / The molten salt reactor(MSR)in generation IV : overview and perspectives / Prog. Nucl. Energy 77:308~319

X. Z. Cai / 2016 / Thorium molten salt reactor nuclear energy system / Physics 45:578~590

T. Allen / 2013 / Fluoride-Salt-Cooled High Temperature Reactor (FHR), Materials, Fuels and Components White Paper / Integrated Research Project Workshop 3

Y. J. Zhong / 2017 / Mesocarbon microbead based graphite for spherical fuel element to inhibit the infiltration of liquid fluoride salt in molten salt reactor / J. Nucl. Mater 490:34~40

R.B. Briggs / 1964 / Molten-salt Reactor Program Semiannual Progress Report :373~389

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