HRTEM and EELS studies of defects structure and amorphous-like graphite induced by ball-milling

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	HRTEM and EELS studies of defects structure and amorphous-like graphite induced by ball-milling
	Huang, JY
刊名	ACTA MATERIALIA
	1999-04-23
卷号	47 期号:6 页码:1801-1808
ISSN号	1359-6454
通讯作者	Huang, JY()
英文摘要	Deformation structures and amorphization kinetics of graphite with high crystallinity upon ball-milling (BM) are studied by high-resolution transmission electron microscopy (HRTEM) and electron energy-loss spectroscopy (EELS). Basal plane stacking disorder, cleavage, delamination cracks; misorientation bands and low-angle (0002) twist boundaries are observed. The basal plane stacking disorder is probably produced by simultaneous shearing of all the lattice planes involved. Other defects such as half Frank loops or interstitial loops and significant bending and buckling of the basal planes are also frequently observed. Sustained shearing of (0002) planes acting in parallel with the increase of the Frank loops finally leads to the breakage of the hexagonal network in a very fine scale until an amorphous-like structure results. Although the amorphous-like phase exhibits amorphous halo diffraction patterns, HRTEM investigations indicate that it consists of highly curled small flakes with average basal plane diameter less than 5 nm and thickness (normal to the basal planes) less than 2 nm. EELS investigations demonstrate that its bonding is essentially sp(2). The present study clarifies the defect configuration appearing in heavily deformed graphite and also shows evidence that the amorphization of graphite is a defect-controlled process. (C) 1999 Acta Metallurgica Inc. Published by Elsevier Science Ltd. All rights reserved.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000080268900010
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/109921]
专题	金属研究所_中国科学院金属研究所
通讯作者	Huang, JY
作者单位	1.Osaka Univ, Ultra High Voltage Electron Microscopy Res Ctr, Suita, Osaka 565, Japan 2.Chinese Acad Sci, Atom Imaging Solids Lab, Met Res Inst, Shenyang 110015, Peoples R China
推荐引用方式 GB/T 7714	Huang, JY. HRTEM and EELS studies of defects structure and amorphous-like graphite induced by ball-milling[J]. ACTA MATERIALIA,1999,47(6):1801-1808.
APA	Huang, JY.(1999).HRTEM and EELS studies of defects structure and amorphous-like graphite induced by ball-milling.ACTA MATERIALIA,47(6),1801-1808.
MLA	Huang, JY."HRTEM and EELS studies of defects structure and amorphous-like graphite induced by ball-milling".ACTA MATERIALIA 47.6(1999):1801-1808.