Thermomagnetic behavior and microstructure of a rapidly quenched Nd14Fe79B7 alloy

• Autorzy: Cosovic V. , Talijan N. , Stajic-Trosic J. , Grujic A. , Zivkovic D. , Zak T.
• Języki publikacji: EN

Abstrakty

EN

Changes in the phase composition and crystallite size, as well as changes in the magnetic behavior of overstoichiometric Nd14Fe79B7 alloy (32 mass% Nd), caused by the thermomagnetic measurements (TM), were observed in regard to the optimal magnetic state of this alloy. In the optimized magnetic state, the hard magnetic phase Nd2Fe14B is identified as the primary phase (up to 95 mass %), with a mean crystallite size about 60 nm, as determined by XRD analysis and Transmission electron microscopy (TEM). The derogation of magnetic properties after TM is due to decreased amount of Nd2Fe14B phase, the formation of Nd2O3 and different Fe(O)B phases, as well as an increase in the mean crystallite size (e.g. Nd2Fe14B . 95 nm).

Słowa kluczowe

EN

Nd rich Nd-Fe-B alloy; TM - measurement; phase composition; crystallite size; magnetic properties

PL

stop Nd-Fe-B bogaty w Nd; pomiar termomagnetyczny; skład fazowy; rozmiar krystalitu; właściwości magnetyczne

• Wydawca: Komitet Nauki o Materiałach PAN
• Czasopismo: Archives of Materials Science
• Rocznik: 2007
• Tom: Vol. 28, nr 1-4
• Strony: 20--24
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Cosovic V.

autor

Talijan N.

autor

Stajic-Trosic J.

autor

Grujic A.

autor

Zivkovic D.

autor

Zak T.

• Institute of Chemistry, Technology and Metallurgy, Department of materials and metallurgy, Belgrade, Serbia,

Bibliografia

• [1] O. Gutfleisch, Controlling the properties of high energy density permanent magnetic materials by different processing routes, Journal of Physics D: Applied Physics 33/17 (2000) 157-172.
• [2] J. Stajić-Trošić, V. Ćosović,. A. Grujić, N. Talijan, V. Spasojević, Phase composition, crystallite size and magnetic properties of rapid quenched Nd-rich Nd14Fe79B7 alloy, Proceedings of the 11th International Research/Expert Conference “Trends in the Development of Machinery and Associated Technology” TMT 2007, Hammamet, 2007, 231-23.
• [3] N. Talijan, V. Ćosović, J. Stajić-Trošić, T. Žák, Phase composition and magnetic properties of melt-spun Nd–Fe–B alloy, Journal of Magnetism and Magnetic Materials 272-276/1 (2004) E1911-E1912.
• [4] J. Rodriguez-Carvajal, 1998 FullProf computer program fttp://charybde.saclay.cea.fr/pub/divers/fullprof.98/windows/winfp98.zip.