Characterization of ultrafine gamma-Fe(C), alpha-Fe(C) and Fe3C particles synthesized by arc-discharge in methane

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	Characterization of ultrafine gamma-Fe(C), alpha-Fe(C) and Fe3C particles synthesized by arc-discharge in methane
	X. L. Dong; Z. D. Zhang; Q. F. Xiao; X. G. Zhao; Y. C. Chuang; S. R. Jin; W. M. Sun; Z. J. Li; Z. X. Zheng; H. Yang
	1998
发表期刊	Journal of Materials Science
ISSN	0022-2461
卷号	33 期号:7 页码:1915-1919
摘要	Ultrafine gamma-Fe(C), alpha-Fe(C) and Fe3C particles were prepared by arc-discharge synthesis in a methane atmosphere. The phases, morphology, structure and surface layer of the particles were studied by means of X-ray diffraction (XRD), transmission electron microscopy (TEM) techniques and X-ray photoelectron spectroscopy (XPS). It was found that the mean particle size ranged from 9.8 to 12.8 nm. The surface of particles mostly consisted of a carbon layer and a little oxide. Phase transformation from gamma-Fe(C) to alpha-Fe(C) was studied by annealing in vacuum and by differential thermal analysis and thermogravimetry (DTA-TGA) measurement. The abundance of gamma-Fe( C) was determined by a magnetization measurement to be approximately 30%. Phase transformation occurred between 300 and 500 degrees C in a flowing argon atmosphere. The Fe3C particles oxidized to alpha-Fe2O3 and carbon dioxide at 610 degrees C or so. (C) 1998 Chapman & Hall.
部门归属	acad sinica, inst met res, shenyang 110015, peoples r china. shenyang polytech univ, lab ultrafine particle, shenyang 110023, peoples r china.;dong, xl (reprint author), acad sinica, inst met res, wenhua rd 72, shenyang 110015, peoples r china
关键词	Magnetic-properties
URL	查看原文
WOS记录号	WOS:000072695900031
引用统计	被引频次：125[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/321006/37649
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. L. Dong,Z. D. Zhang,Q. F. Xiao,et al. Characterization of ultrafine gamma-Fe(C), alpha-Fe(C) and Fe3C particles synthesized by arc-discharge in methane[J]. Journal of Materials Science,1998,33(7):1915-1919.
APA	X. L. Dong.,Z. D. Zhang.,Q. F. Xiao.,X. G. Zhao.,Y. C. Chuang.,...&H. Yang.(1998).Characterization of ultrafine gamma-Fe(C), alpha-Fe(C) and Fe3C particles synthesized by arc-discharge in methane.Journal of Materials Science,33(7),1915-1919.
MLA	X. L. Dong,et al."Characterization of ultrafine gamma-Fe(C), alpha-Fe(C) and Fe3C particles synthesized by arc-discharge in methane".Journal of Materials Science 33.7(1998):1915-1919.