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Type: Artigo de periódico
Title: The effect of atmosphere composition in plasma nitrogenation of Sm2Fe17
Author: Ardisson, JD
Araujo, RC
Macedo, WAA
Persiano, AIC
Gama, S
Abstract: 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.
Subject: Sm2Fe17N
rare earth compound
plasma nitrogenation
Mossbauer spectroscopy
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.jmmm.2003.12.1008
Date Issue: 2004
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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