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author:

Wang, C. (Wang, C..) [1] (Scholars:王晨) | Lai, Y. S. (Lai, Y. S..) [2] | Hsieh, C. C. (Hsieh, C. C..) [3] | Chang, W. C. (Chang, W. C..) [4] | Chang, H. W. (Chang, H. W..) [5] | Sun, A. C. (Sun, A. C..) [6]

Indexed by:

CPCI-S EI Scopus SCIE

Abstract:

The bulk nanocrystalline Nd-Fe-B magnets in forms of rod and slab with various surface area-to-volume ratios (defined as S/V) were prepared by injection casting into copper molds. The effects of the surface area-to-volume ratio and the application of magnetic field during the casting process on the magnetic properties and microstructure of Nd9.5Fe71.5Ti2.5Zr0.5Cr1B14.5C0.5 alloy have been studied. The results show that the samples that have larger S/V values exhibit higher H-i(c) and BHmax. The intrinsic coercivity of bulk magnet is more sensitive to the cooling rate of alloy melt than the remanence. The slab-shaped sample cast with magnetic field has a stronger (00L) texture of Nd2Fe14B phase with the c-axis perpendicular to the slab plane than the slab-shaped sample cast without magnetic field. Applying a magnetic field during the casting process is helpful to refine the grain size, thus improving the magnetic properties.

Keyword:

Copper mold casting magnetic field magnetic properties permanent magnets

Community:

  • [ 1 ] [Wang, C.]Natl Chung Cheng Univ, Dept Phys, Chiayi 621, Taiwan
  • [ 2 ] [Lai, Y. S.]Natl Chung Cheng Univ, Dept Phys, Chiayi 621, Taiwan
  • [ 3 ] [Hsieh, C. C.]Natl Chung Cheng Univ, Dept Phys, Chiayi 621, Taiwan
  • [ 4 ] [Chang, W. C.]Natl Chung Cheng Univ, Dept Phys, Chiayi 621, Taiwan
  • [ 5 ] [Wang, C.]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
  • [ 6 ] [Chang, H. W.]Tunghai Univ, Dept Phys, Taichung 407, Taiwan
  • [ 7 ] [Sun, A. C.]Yuan Ze Univ, Dept Chem Engn & Mat Sci, Chungli 32003, Taiwan

Reprint 's Address:

  • [Chang, W. C.]Natl Chung Cheng Univ, Dept Phys, Chiayi 621, Taiwan

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Source :

IEEE TRANSACTIONS ON MAGNETICS

ISSN: 0018-9464

Year: 2011

Issue: 10

Volume: 47

Page: 3263-3266

1 . 3 6 3

JCR@2011

2 . 1 0 0

JCR@2023

ESI Discipline: PHYSICS;

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 7

SCOPUS Cited Count: 7

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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