Effects of pressure, temperature and grain size on synthesis and structures of Fe-N alloys

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	Effects of pressure, temperature and grain size on synthesis and structures of Fe-N alloys
	L. Liu; B. Yao; X. D. Zhao; X. Y. Guo; F. L. Ning; W. H. Su
	2002
发表期刊	Chemical Journal of Chinese Universities-Chinese
ISSN	0251-0790
卷号	23 期号:1 页码:41069
摘要	Effects of pressure, temperature and grain size on the solid state reaction between alpha-Fe and amorphous BN and crystal structures of the resultant of the reaction were studied by using mechanical milling and high pressure techniques at the temperatures ranging from 580 to 930 K under pressures between 1 x 10(-3) Pa and 4 GPa. It was found that the pressures and refinement of grain size can greatly accelerate the solid state reaction process. There is a critical grain size for a-Fe, below which the reaction begins to occur. In the present experiment, this grain size was measured to be about 8 nm. The crystal structures of the resultants change with the variation of pressure and temperature. A new Fe-N alloy with orthorhombic structure was produced firstly at 2 GPa and 800 K. Single phase epsilon-FexN alloy can be obtained in the temperature range of 690 to 800 K at the pressures of 3 to 4 GPa. However, the resultant is not any Fe-N alloy but Fe3B alloy when the pressure is 4 GPa and the temperature is above 930 K.
部门归属	jilin univ, dept phys, changchun 130023, peoples r china. natl univ singapore, fac sci, dept mat sci, singapore 119260, singapore. acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;liu, l (reprint author), jilin univ, dept phys, changchun 130023, peoples r china
关键词	Solid-state Reaction Crystal Structure High Pressure Fe-n Alloy Magnetic-properties Nitrides
URL	查看原文
WOS记录号	WOS:000173834700002
引用统计	被引频次：20[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/321006/36349
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Liu,B. Yao,X. D. Zhao,et al. Effects of pressure, temperature and grain size on synthesis and structures of Fe-N alloys[J]. Chemical Journal of Chinese Universities-Chinese,2002,23(1):41069.
APA	L. Liu,B. Yao,X. D. Zhao,X. Y. Guo,F. L. Ning,&W. H. Su.(2002).Effects of pressure, temperature and grain size on synthesis and structures of Fe-N alloys.Chemical Journal of Chinese Universities-Chinese,23(1),41069.
MLA	L. Liu,et al."Effects of pressure, temperature and grain size on synthesis and structures of Fe-N alloys".Chemical Journal of Chinese Universities-Chinese 23.1(2002):41069.