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Preparation of binderless nanopore-isotropic graphite for inhibiting the liquid fluoride salt and Xe-135 penetration for molten salt nuclear reactor
Song, JL; Zhao, YL; Zhang, JP; He, XJ; Zhang, BL; Lian, PF; Liu, ZJ; Zhang, DS; He, ZT; Gao, LN; Xia, HH; Zhou, XT; Huai, P; Guo, QG; Liu, L; jlsong1982@yeah.net
2014
Source PublicationCARBON
ISSN0008-6223
Volume79Pages:36—45
AbstractMesocarbon microbeads and the isostatic pressing method were used to prepare binderless nanopore-isotropic graphite (NPIG) as a neutron moderator and reflector, to inhibit liquid fluoride salt and Xe-135 penetration during use in a molten salt nuclear reactor. The microstructure, thermophysical, and other properties of the NPIG were studied and compared with isostatic graphite (IG-110, TOY TANSO CO., Ltd., Japan). A high-pressure reactor and a vacuum device were constructed to evaluate the molten salt and Xe-135 penetration in the graphite, respectively. The results indicated that NPIG possessed a graphitization degree of 74% and excellent properties such as a high bending strength of 94.1 +/- 2.5 MPa, a high compressive strength of 230 +/- 3 MPa, a low porosity of 8.7%, and an average pore diameter of 69 nm. The fluoride salt occupation of IG-110 was 13.5 wt% under 1.5 atm, whereas the salt gain in NPIG remained steady even up to 10 atm with an increase of <0.06 wt%, demonstrating that the graphite could inhibit the liquid fluoride salt infiltration effectively. The helium diffusion coefficient for NPIG was 8.76 x 10(-5) cm(2)/s, much less than 1.21 x 10(-2) cm(2)/s for IG-110. The NPIG could effectively inhibit liquid fluoride salt and Xe-135 penetration. (C) 2014 Elsevier Ltd. All rights reserved.
KeywordMesocarbon-microbeads Pyrolytic Carbon Thermal-conductivity Raman-spectroscopy Stacking Order Infiltration Irradiation Composites Foams Seal
Indexed BySCI
Language英语
WOS IDWOS:000342657100004
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14326
Collection中科院上海应用物理研究所2011-2019年
Corresponding Authorjlsong1982@yeah.net
Recommended Citation
GB/T 7714
Song, JL,Zhao, YL,Zhang, JP,et al. Preparation of binderless nanopore-isotropic graphite for inhibiting the liquid fluoride salt and Xe-135 penetration for molten salt nuclear reactor[J]. CARBON,2014,79:36—45.
APA Song, JL.,Zhao, YL.,Zhang, JP.,He, XJ.,Zhang, BL.,...&jlsong1982@yeah.net.(2014).Preparation of binderless nanopore-isotropic graphite for inhibiting the liquid fluoride salt and Xe-135 penetration for molten salt nuclear reactor.CARBON,79,36—45.
MLA Song, JL,et al."Preparation of binderless nanopore-isotropic graphite for inhibiting the liquid fluoride salt and Xe-135 penetration for molten salt nuclear reactor".CARBON 79(2014):36—45.
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