The effect of atmosphere composition in plasma nitrogenation of Sm2Fe17

被引：1
|
作者：
Ardisson, J. D. [1 ]
Araujo, R. C.
Macedo, W. A. A.
Persiano, A. I. C.
Gama, S.
机构：
[1] CNEN, CDTN, Lab Fis Aplicada, BR-30123970 Belo Horizonte, MG, Brazil
[2] UFRR, Dept Fis, BR-69310270 Boa Vista, RR, Brazil
[3] UFMG, Dept Fis, BR-31270901 Belo Horizonte, MG, Brazil
[4] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷
关键词：
Sm2Fe17N; rare earth compound; plasma nitrogenation; Mossbauer spectroscopy;
D O I：
10.1016/j.jmmm.2003.12.1008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The change on the structural and magnetic properties of the Sm2Fe17 compound as the ratio of H-2/N-2 forming the mixture of the atmosphere in a plasma chamber used to nitride this compound varied, was investigated by Mossbauer spectroscopy and X-ray diffraction. Our results show that the increase of the hydrogen concentration in the mixed H-2/ N-2 atmosphere reduces the formation of the nitrogen-rich phases, Sm2Fe17N8 and Sm2Fe17N11 and increases the formation of the Sm2Fe17N3 phase, whose maximum values are obtained for 70% H-2 in the gas mixture. (C) 2003 Elsevier B. V. All rights reserved.
引用
收藏
页码：E1859 / E1861
页数：3
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