NDLI: The Study on Grain-Boundary Microstructure of Sintered (Ce, Nd)–Fe

Content Provider	IEEE Xplore Digital Library
Author	Wei Li Anhua Li Haibo Feng Shulin Huang Jingdai Wang Minggang Zhu
Copyright Year	1965
Abstract	In this paper, the structure and magnetic properties of the (Ce, Nd)-Fe-B magnets without Dy and Tb substitution have been investigated. The purpose of the investigation is to develop the applicable Ce-Fe-B magnets with Ce content over 50 wt.%. Sintered (Ce, Nd)-Fe-B magnets with the nominal composition of (Nd_1-xCe_x)₃₀(Fe, TM)_balB₁ (x = 0-0.75) in wt.% were fabricated by advanced powder metallurgy processes. The effects of Ce substitution on the microstructure and magnetic properties of the (Ce, Nd)-Fe-B magnets were discussed. It was found that the (Ce, Nd)-rich boundary phase with lower melting point is helpful to obtain improved boundary microstructures and refined grain magnets. Good magnetic properties of Br = 13.5 kG, H_cj = 9.5 kOe, and (BH)_max = 42.8 MGOe were obtained in the Dy-free (Ce, Nd)-Fe-B magnets with 30 wt.% Ce substitution. A higher coercivity (>10 kOe) has been achieved in the Ce-Fe-B type magnets by the modifications of alloy compositions and the optimization of preparation conditions, in which the proportion of Nd and/or Pr is lower than 35 wt.% of the total rare-earth content.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	3
Page Count	3
File Size	2052010
File Format	PDF
ISSN	00189464
Volume Number	51
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic resonance imaging Saturation magnetization Perpendicular magnetic anisotropy Magnetic properties Soft magnetic materials Magnetic separation magnetic properties sintered R-Fe-B magnet microstructure grain boundary sintered R–Fe–B magnet Grain boundary
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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