Mesocarbon microbead based graphite for spherical fuel element to inhibit the infiltration of liquid fluoride salt in molten salt reactor

doi:10.1016/j.jnucmat.2017.04.003

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Mesocarbon microbead based graphite for spherical fuel element to inhibit the infiltration of liquid fluoride salt in molten salt reactor
	Zhong, YJ; Zhang, JP; Lin, J; Xu, LJ; Zhang, F; Xu, HX; Chen, Y; Jiang, HT; Li, ZW; Zhu, ZY; Guo, QG
	2017
Source Publication	JOURNAL OF NUCLEAR MATERIALS
ISSN	0022-3115
Volume	490 Issue:-Pages:34-40
Subtype	期刊论文
Abstract	Mesocarbon microbeads (MCMB) and quasi-isostatic pressing method were used to prepare MCMB based graphite (MG) for spherical fuel element to inhibit the infiltration of liquid fluoride salt in molten salt reactor (MSR). Characteristics of mercury infiltration and molten salt infiltration in MG were investigated and compared with A3-3 (graphite for spherical fuel element in high temperature gas cooled reactor) to identify the infiltration behaviors. The results indicated that MG had a low porosity about 14%, and an average pore diameter of 96 nm. Fluoride salt occupation of A3-3 (average pore diameter was 760 nm) was 10 wt% under 6.5 atm, whereas salt gain did not infiltrate in MG even up to 6.5 atm. It demonstrated that MG could inhibit the infiltration of liquid fluoride salt effectively. Coefficient of thermal expansion (LIE) of MG lies in 6.01 x 10(-6) K-1 (alpha(parallel to)) and 6.15 x 10(-6) K-1 (alpha(perpendicular to)) at the temperature range of 25-700 degrees C. The anisotropy factor of MG calculated by CTE maintained below 1.02, which could meet the requirement of the spherical fuel element (below 1.30). The constant isotropic property of MG is beneficial for the integrity and safety of the graphite used in the spherical fuel element for a MSR. (C) 2017 Elsevier B.V. All rights reserved.
Keyword	Isotropic Graphite
DOI	10.1016/j.jnucmat.2017.04.003
WOS Keyword	ISOTROPIC GRAPHITE
Indexed By	SCI
Language	英语
WOS ID	WOS:000403132300004
Citation statistics	Cited Times:3[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/28731
Collection	中科院上海应用物理研究所2011-2018年
Recommended Citation GB/T 7714	Zhong, YJ,Zhang, JP,Lin, J,et al. Mesocarbon microbead based graphite for spherical fuel element to inhibit the infiltration of liquid fluoride salt in molten salt reactor[J]. JOURNAL OF NUCLEAR MATERIALS,2017,490(-):34-40.
APA	Zhong, YJ.,Zhang, JP.,Lin, J.,Xu, LJ.,Zhang, F.,...&Guo, QG.(2017).Mesocarbon microbead based graphite for spherical fuel element to inhibit the infiltration of liquid fluoride salt in molten salt reactor.JOURNAL OF NUCLEAR MATERIALS,490(-),34-40.
MLA	Zhong, YJ,et al."Mesocarbon microbead based graphite for spherical fuel element to inhibit the infiltration of liquid fluoride salt in molten salt reactor".JOURNAL OF NUCLEAR MATERIALS 490.-(2017):34-40.

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