Nd2Fe14C processed by the hydrogenation, disproportionation, desorption and recombination (HDDR) process

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	Nd2Fe14C processed by the hydrogenation, disproportionation, desorption and recombination (HDDR) process
	Y. C. Sui; Z. D. Zhang; W. Liu; Q. F. Xiao; X. G. Zhao; T. Zhao; Y. C. Chuang
	1998
发表期刊	Journal of Physics-Condensed Matter
ISSN	0953-8984
卷号	10 期号:2 页码:363-370
摘要	The hydrogenation, disproportionation, desorption and recombination (HDDR) process has been employed to produce Nd2Fe14C-based permanent magnets. The master alloys for HDDR are Nd2Fe14C-based alloys which are obtained by annealing mechanically alloyed (MA) Nd16Fe75C9 powder at 850 degrees C. The disproportionation reaction at 850 degrees C results in the Formation of an intimate mixture of Nd-hydride, alpha-Fe and Nd2Fe2C3. On desorbing the hydrogen at the same temperature, different constituents recombine to form the thermodynamically stable Nd2Fe14C and the Nd-rich phase, depending sensitively on recombination time and slightly on hydrogenation time. The phases obtained by HDDR at 950 degrees C consist of Nd2Fe17Cx, alpha-Fe, the Nd-rich phase and Nd2C3, whereas those obtained at 700 degrees C are of Nd2Fe17Cx, the Nd-rich phase and a small amount of alpha-Fe. For comparison, the Nd2Fe17Cx-based alloys have also been processed by HDDR, in which more alpha-Fe and Nd-rich phases are found to coexist with Nd2Fe14C after recombination at the same temperature. The Nd2Fe14C-based alloy made by MA in conjunction with HDDR has better magnetic properties than that made by MA only.
部门归属	acad sinica, inst met res, shenyang 110015, peoples r china. acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;sui, yc (reprint author), acad sinica, inst met res, shenyang 110015, peoples r china;wliu@imr.ac.cn
关键词	Permanent-magnets
URL	查看原文
WOS记录号	WOS:000071819100015
引用统计	被引频次：4[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/321006/37777
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. C. Sui,Z. D. Zhang,W. Liu,et al. Nd2Fe14C processed by the hydrogenation, disproportionation, desorption and recombination (HDDR) process[J]. Journal of Physics-Condensed Matter,1998,10(2):363-370.
APA	Y. C. Sui.,Z. D. Zhang.,W. Liu.,Q. F. Xiao.,X. G. Zhao.,...&Y. C. Chuang.(1998).Nd2Fe14C processed by the hydrogenation, disproportionation, desorption and recombination (HDDR) process.Journal of Physics-Condensed Matter,10(2),363-370.
MLA	Y. C. Sui,et al."Nd2Fe14C processed by the hydrogenation, disproportionation, desorption and recombination (HDDR) process".Journal of Physics-Condensed Matter 10.2(1998):363-370.