| Advantages of natural microcrystalline graphite filler over petroleum coke in isotropic graphite preparation | |
Shen K; Huang ZH; Hu KX(胡开鑫) ; Shen WC; Yu SY; Yang JH; Yang GZ; Kang FY; Kang, FY (reprint author), Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China.
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| Source Publication | CARBON
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| 2015-08 | |
| Volume | 90Pages:197-206 |
| ISSN | 0008-6223 |
| Abstract | Graphite materials are used in high-temperature gas-cooled reactor (HTR) as moderator and reflector. Nuclear graphite is currently manufactured using coke as the filler; however, improvements in the performance of nuclear graphite are anticipated in order to enhance the safety and lifetime of HTRs. Natural microcrystalline graphite (MG), which is a metamorphic product of coal, is an emerging candidate as filler material. This paper proposes the approach of preparing isotropic graphite using MG fillers. The characterization results of MG ores and purified powder indicate a polycrystalline and near-isotropic structure of MG particles. Thus, near-isotropic graphite with an isotropy ratio of 1.10-1.15 can be easily obtained via cold isostatic pressing. The thermal diffusivity of MG-based green body is much higher than that of coke-based one, therefore facilitates the baking step. The advantages of MG-based graphite also include a high degree of graphitization, and a low coefficient of thermal expansion, both of which are highly beneficial to nuclear applications. As a result, MG exhibits a large potential for the application in isotropic nuclear graphite. (C) 2015 Elsevier Ltd. All rights reserved. |
| DOI | 10.1016/j.carbon.2015.03.068 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000356129200023 |
| WOS Research Area | Chemistry ; Materials Science |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary |
| Funding Organization | National Natural Science Foundation of China [51402166] ; China and China Postdoctoral Science Foundation [2014M550723] |
| Department | NML流动稳定性与复杂流动 |
| Classification | 一类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/54971 |
| Collection | 微重力重点实验室 |
| Corresponding Author | Kang, FY (reprint author), Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China. |
| Recommended Citation GB/T 7714 | Shen K,Huang ZH,Hu KX,et al. Advantages of natural microcrystalline graphite filler over petroleum coke in isotropic graphite preparation[J]. CARBON,2015,90:197-206. |
| APA | Shen K.,Huang ZH.,Hu KX.,Shen WC.,Yu SY.,...&Kang, FY .(2015).Advantages of natural microcrystalline graphite filler over petroleum coke in isotropic graphite preparation.CARBON,90,197-206. |
| MLA | Shen K,et al."Advantages of natural microcrystalline graphite filler over petroleum coke in isotropic graphite preparation".CARBON 90(2015):197-206. |
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| IMCAS-J2015-103.pdf（2199KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-ND | View Download | |
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