Advantages of natural microcrystalline graphite filler over petroleum coke in isotropic graphite preparation

	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
刊名	CARBON
	2015-08
通讯作者邮箱	fykang@mail.tsinghua.edu.cn
卷号	90 页码:197-206
ISSN号	0008-6223
通讯作者	Kang, FY (reprint author), Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China.
产权排序	[Shen, Ke; Huang, Zheng-Hong; Shen, Wanci; Kang, Feiyu] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China; [Shen, Ke] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China; [Hu, Kaixin] Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100190, Peoples R China; [Yu, Suyuan] Tsinghua Univ, Ctr Combust Energy, Dept Thermal Engn, Beijing 100084, Peoples R China; [Yang, Junhe; Yang, Guangzhi] Univ Shanghai Sci & Technol, Sch Mat Sci & Engn, Shanghai 200093, Peoples R China; [Kang, Feiyu] Tsinghua Univ, Grad Sch Shenzhen, City Key Lab Thermal Management Engn & Mat, Shenzhen 518055, Guangdong, Peoples R China
中文摘要	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.
分类号	一类
类目[WOS]	Chemistry, Physical ; Materials Science, Multidisciplinary
研究领域[WOS]	Chemistry ; Materials Science
收录类别	SCI ; EI
原文出处	http://dx.doi.org/10.1016/j.carbon.2015.03.068
语种	英语
WOS记录号	WOS:000356129200023
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/54971]
专题	力学研究所_国家微重力实验室
推荐引用方式 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.