Idioma:

Effect of Ti-C and Cr Additions on Magnetic Properties of Nanocrystalline (Pr,Nd)-Fe-B Alloys

de Franco, V.C. ; Murakami, R.K. ; Rechenberg, H.R. ; Yonamine, T. ; Missell, F.P. ; Villas-Boas, V.

IEEE transactions on magnetics, 2008-11, Vol.44 (11), p.4258-4261

New York, NY: IEEE

Texto completo disponível

Citações Citado por

Enviar para

Título:
Effect of Ti-C and Cr Additions on Magnetic Properties of Nanocrystalline (Pr,Nd)-Fe-B Alloys
Autor: de Franco, V.C. ; Murakami, R.K. ; Rechenberg, H.R. ; Yonamine, T. ; Missell, F.P. ; Villas-Boas, V.
Assuntos: Chromium alloys ; Cr additions ; Cross-disciplinary physics: materials science; rheology ; Exact sciences and technology ; Grain size ; Image analysis ; Iron ; Magnetic analysis ; Magnetic field measurement ; Magnetic properties ; Magnetism ; Materials science ; Minerals ; MÖssbauer spectroscopy ; Nanocomposites ; Nd)-Fe-B ; Neodymium ; Other topics in materials science ; Phase measurement ; Physics ; Pr ; Remanence ; X-ray diffraction (XRD)
É parte de: IEEE transactions on magnetics, 2008-11, Vol.44 (11), p.4258-4261
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: The addition of both Ti-C and Cr as grain refiners in Nd-Fe-B nanocomposites substantially increases the coercive field Hc. This motived our investigation of the effect of Ti-C and Cr on Pr-Fe-B nanocomposites. Melt-spun ribbons of composition (Pr 9.5 Fe 84.5 B 6 ) 0.97 - x Cr x (TiC) 0.03 (x = 0; 0.25; 0.5; 0.75; 1) and (Nd 9.5 Fe 84.5 B 6 ) 0.97-x Cr x (TiC) 0.03 ( x = 0.5 and 1) were produced for study. For a Pr nanocomposite with 1% Cr, Hc = 12.5 kOe. However, the energy product was limited to 13.6 MGOe by the remanence value. Rietveld analysis of X-ray spectra showed the ribbons to consist of predominantly hard ( ~ 70 wt%) R 2 Fe 14 B, the soft phase being ( ~ 30 wt%) alpha-Fe. Mossbauer measurements at 300 K are consistent with a reduced hyperfine field for the hard magnetic phase due to the Cr addition. Analysis of transmission electron microscopy images showed the Pr nanocomposite with 1% Cr to have an increased average grain size.
Editor: New York, NY: IEEE
Idioma: Inglês

Links

View record in Pascal Francis

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Effect of Ti-C and Cr Additions on Magnetic Properties of Nanocrystalline (Pr,Nd)-Fe-B Alloys

de Franco, V.C. ; Murakami, R.K. ; Rechenberg, H.R. ; Yonamine, T. ; Missell, F.P. ; Villas-Boas, V.

New York, NY: IEEE

Buscando em bases de dados remotas. Favor aguardar.