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http://yadda.icm.edu.pl:443/baztech/element/bwmeta1.element.baztech-ed90eef4-27aa-4669-bae4-655a3160fbad

Czasopismo

Journal of Achievements in Materials and Manufacturing Engineering

Tytuł artykułu

Effect of grain size and tungsten addition on microstructure and magnetic properties of Nd-Fe-B type magnets

Autorzy Przybył, A.  Wnuk, I.  Gębara, P.  Wysłocki, J. J. 
Treść / Zawartość http://www.journalamme.org
Warianty tytułu
Języki publikacji EN
Abstrakty
EN Purpose: The paper presents the results of the microstructural and magnetic examinations of Nd-Fe-B type magnets produced by the mechanical powder milling method and doped with tungsten. Design/methodology/approach: The effect of the grain size and addition of tungsten on the microstructure and magnetic properties of nanocrystalline alloys of the basic composition of Nd10Fe84B6, as produced by the method of mechanical alloying in the process of prolonged milling, was investigated in the study. Powders were subjected to milling for a duration ranging from 10 to 120 hours in an Ar protective atmosphere. Moreover tungsten was added to the base alloy that exhibited the best magnetic parameters. The tungsten content of alloys varied in a broad range from 0 to 33 at%. Findings: The examinations have shown that the grinding duration, for which the best magnetic properties are obtained, is 90 hours. Prolonged grinding has a significant effect on the grain size and microstructure refinement. The alloy addition in the form of tungsten, similarly as in the case of prolonged grinding, leads to a structure refinement. In the case of W addition, an increase in the coercive field, with a simultaneous decrease in the value of remanence and magnetic energy density (BH)max, is observed. Practical implications: Development of relatively cheap Nd10Fe84B6magnets of good service properties. Originality/value: Determination of the effect of grain size and tungsten content on the magnetic properties and microstructure of the Nd-Fe-B magnets.
Słowa kluczowe
EN magnetic properties   Nd-Fe-B magnets   microstructure  
Wydawca International OCSCO World Press
Czasopismo Journal of Achievements in Materials and Manufacturing Engineering
Rocznik 2011
Tom Vol. 49, nr 2
Strony 210--214
Opis fizyczny Bibliogr. 12 poz., rys.
Twórcy
autor Przybył, A.
  • Institute of Physics, Faculty of Materials Processing Technology and Applied Physics, Częstochowa University of Technology, przybyl@wip.pcz.pl
autor Wnuk, I.
  • Institute of Physics, Faculty of Materials Processing Technology and Applied Physics, Częstochowa University of Technology
autor Gębara, P.
  • Institute of Physics, Faculty of Materials Processing Technology and Applied Physics, Częstochowa University of Technology
autor Wysłocki, J. J.
  • Institute of Physics, Faculty of Materials Processing Technology and Applied Physics, Częstochowa University of Technology
Bibliografia
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[8] J.J. Wyslocki, P. Pawlik, Arc-plasma spraying and suction- custing metods in magnetic materials manufacturing, Journal of Achievements in Materials and Manufacturing Engineering 43/1 (2010) 463-468.
[9] H.H. Stadelmaier, E.T. Henig, G. Petzof, A chronic of development of iron based rare earth high-performence magnets, Zeitschrift für Mettallkunde 82/3 (1991) 163-168.
[10] E. Girt, Z. Altounian, D.H. Ryan, Fe-substitution in Nd2Fe17-δXδC0,3 (X = Al, Ti, V, W and δ = 0, 0.5), Journal of Magnetism and Magnetic Materials 177-181/2 (1998) 982-984.
[11] A. Yan, X. Song, X. Wang, Segregation of W in Nd-Fe-B magnets and its effect on coercivity, IEEE Transactions on Magnetics. 36/4 (2000) 2033-2036.
[12] A. Przybył, J.J. Wysłocki, The effect of annealing temperature on structure and magnetic properties of nanocomposite Nd10Fe84-xWxB6 (0<x<3 at.%) magnets, Journal of Materials Processing Technology 175/1-3 (2006) 352-357.
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