Microstructure of a pyrolytic carbon coating on a nuclear graphite substrate IG-110

IMR OpenIR

	Microstructure of a pyrolytic carbon coating on a nuclear graphite substrate IG-110
	Feng Shang-lei; Yang Ying-guo; Bai Shuo; Xu Li; Yang Xin-mei; Xia Hui-hao; Zhou Xing-tai; fengshanglei@sinap.ac.cn; sbai@imr.ac.cn; zhouxingtai@sinap.ac.cn
	2015
发表期刊	NEW CARBON MATERIALS
ISSN	1007-8827
卷号	30 期号:3 页码:275-281
摘要	The molten salt reactor (MSR) is one of the six Generation IV reactors that is being reexamined today, owing to its unique fuel cycle capabilities and safety characteristics. IG-110 nuclear graphite a candidate material for constructing a MSR. However, the existence of large pores at its surface is a big problem due to the impregnation of molten salts and the diffusion of fission product gases into the graphite through the pores. A pyrolytic carbon (PyC) coating can act as a barrier coating on the nuclear graphite. Investigation of the microstructure and growth characteristics of PyC is very important for an understanding of the relationship between microstructure and performance. In this study, polarized light microscopy, scanning electron microscopy, transmission electron microscopy and synchrotron based grazing incidence X-ray diffraction were used to study the microstructure and growth characteristics of the PyC coating. Results show that the PyC coating shows three growth cones (a large cone, a smaller one and a regenerative cone) and exhibits a wave-like layered structure. The resulting structure is fairly dense. There are two kinds of textures in the PyC coating: smooth laminar and regenerative laminar, each of which contains two crystal structures with different interlayer spacings. The smooth laminar carbon has mostly a low degree of graphitization, while the regenerative laminar structure mainly has a high degree of graphitization. The PyC coating is a perfect barrier to gas infiltration due to its compact structure and it containing only nanopores rather than large pores.
部门归属	[feng shang-lei ; yang ying-guo ; yang xin-mei ; xia hui-hao ; zhou xing-tai] chinese acad sci, shanghai inst appl phys, key lab nucl radiat & nucl energy technol, shanghai 201800, peoples r china ; [yang ying-guo] chinese acad sci, shanghai inst appl phys, shanghai synchrotron radiat facil, shanghai 201800, peoples r china ; [bai shuo ; xu li] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
关键词	Pyrolytic Carbon Microstructure Transmission Electron Microscopy Synchrotron Based Grazing Incidence X-ray Diffraction
资助者	Program of International S & T Cooperation ANSTO-SINAP [2014DFG60230]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA02040200]; National Basic Research Program [2010CB934503]; Open Research Program on Large Scientific Facility of the Chinese Academy of Sciences [Y028041061]
收录类别	sci
语种	英语
WOS记录号	WOS:000357911200011
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74991
专题	中国科学院金属研究所
通讯作者	fengshanglei@sinap.ac.cn; sbai@imr.ac.cn; zhouxingtai@sinap.ac.cn
推荐引用方式 GB/T 7714	Feng Shang-lei,Yang Ying-guo,Bai Shuo,et al. Microstructure of a pyrolytic carbon coating on a nuclear graphite substrate IG-110[J]. NEW CARBON MATERIALS,2015,30(3):275-281.
APA	Feng Shang-lei.,Yang Ying-guo.,Bai Shuo.,Xu Li.,Yang Xin-mei.,...&zhouxingtai@sinap.ac.cn.(2015).Microstructure of a pyrolytic carbon coating on a nuclear graphite substrate IG-110.NEW CARBON MATERIALS,30(3),275-281.
MLA	Feng Shang-lei,et al."Microstructure of a pyrolytic carbon coating on a nuclear graphite substrate IG-110".NEW CARBON MATERIALS 30.3(2015):275-281.