Infiltration of graphite by molten 2LiF-BeF2 salt
Tang, H; Qi, W; He, ZT; Xia, HH; Huang, Q; Zhang, C; Wang, X; Song, JL; Huai, P; Zhou, XT
2017
发表期刊JOURNAL OF MATERIALS SCIENCE
ISSN0022-2461
卷号52期号:19页码:11346-11359
文章类型期刊论文
摘要With the aim of developing neutron moderator and neutron reflector materials for fluoride-salt-cooled high-temperature reactors (FHRs), static infiltration tests were performed on graphite materials in molten 2LiF-BeF2 (FLiBe) salt, which is a potential primary coolant, at 700 degrees C and various pressures. The weight gain ratios of four grades (NBG-18, IG-110, NG-CT-10, and NG-CT-50) of graphite after infiltration were measured to determine their infiltration curves. The threshold pressure for FLiBe salt infiltration for the ultrafine-grained graphite (NG-CT-50) was greater than 600 kPa and much higher than those of the other three grades (medium-grained/ fine-grained graphites), indicating that this graphite grade more probably resists salt infiltration in FHRs than other grades of graphite. However, if the threshold pressure is exceeded, it has the highest potential capacity for infiltrated salt over the pressures tested. The four grades were also characterized using mercury intrusion porosimetry. It was found that the infiltration curves of these two unwetting liquids were very similar. Scanning electron microscopy characterization showed that the FLiBe salt was distributed relatively uniformly in all four grades, indicating the presence of interconnected networks of open pores throughout the samples. X-ray diffraction patterns showed that infiltration test at high pressure led to an improved structural order and a decreased d-spacing in graphite.
关键词Inert-gas Pressure Nuclear Graphite Behavior Ig-110 Metal
DOI10.1007/s10853-017-1310-4
关键词[WOS]INERT-GAS PRESSURE ; NUCLEAR GRAPHITE ; BEHAVIOR ; IG-110 ; METAL
收录类别SCI
语种英语
WOS记录号WOS:000405306300017
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28698
专题中科院上海应用物理研究所2011-2018年
推荐引用方式
GB/T 7714
Tang, H,Qi, W,He, ZT,et al. Infiltration of graphite by molten 2LiF-BeF2 salt[J]. JOURNAL OF MATERIALS SCIENCE,2017,52(19):11346-11359.
APA Tang, H.,Qi, W.,He, ZT.,Xia, HH.,Huang, Q.,...&Zhou, XT.(2017).Infiltration of graphite by molten 2LiF-BeF2 salt.JOURNAL OF MATERIALS SCIENCE,52(19),11346-11359.
MLA Tang, H,et al."Infiltration of graphite by molten 2LiF-BeF2 salt".JOURNAL OF MATERIALS SCIENCE 52.19(2017):11346-11359.
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