Preparation of bulk Nd2Fe14B/Fe3B nanocomposite magnets with high rare earth content

被引：16
作者：
Zhang, W. Y. [1 ]
Stoica, M. [1 ]
Eckert, J. [1 ]
Yu, P. [2 ]
Jiang, J. Z. [3 ]
机构：
[1] IFW Dresden, Inst Complex Mat, D-01069 Dresden, Germany
[2] Univ Queensland, Sch Engn, Div Mat, St Lucia, Qld 4072, Australia
[3] Zhejiang Univ, Lab New Struct Mat, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China
来源：
INTERMETALLICS | 2008年 / 16卷 / 03期
关键词：
composites; magnetic intermetallics; magnetic properties; glasses; metallic; rapid solidification processing;
D O I：
10.1016/j.intermet.2007.09.006
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nd6Fe72-xCoxB22 (x = 0, 20) rods with 1 min diameter have been prepared by suction casting. The Nd6Fe72B22 rod is mainly composed of Nd2Fe23B3, Fe3B and a small amount of amorphous phase, whereas the Nd6Fe52Co20B22 sample is amorphous. Co addition considerably improves the glass-forming ability (GFA) of Nd6Fe72B22, which is believed to result from the large decrease of the eutectic temperature due to Co addition. Co addition promotes the formation of the Nd2Fe14B hard magnetic phase in annealed alloys, which strengthens the exchange coupling action among the magnetic phases and thus leads to a significant enhancement of the magnetic properties of the bulk nanocomposite magnets. For example, the remanence, coercivity, and energy product are increased from 3.9 kG, 1.3 kOe, and 0.9 MGOe for the Co-free alloy to 8 kG, 4.5 kOe, and 6 MGOe after Co addition, respectively. (C) 2007 Elsevier Ltd. All rights reserved.
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收藏
页码：341 / 344
页数：4
相关论文
共 19 条
  • [1] Nanocrystalline FeNdB permanent magnets with enhanced remanence
    Bauer, J
    Seeger, M
    Zern, A
    Kronmuller, H
    [J]. JOURNAL OF APPLIED PHYSICS, 1996, 80 (03) : 1667 - 1673
  • [2] Glass-forming ability and fragility parameter of amorphous Fe67Co9.5Nd3Dy0.5B20
    Biswas, K.
    Venkataraman, S.
    Zhang, W. Y.
    Ram, S.
    Eckert, J.
    [J]. JOURNAL OF APPLIED PHYSICS, 2006, 100 (02)
  • [3] Fabrication of bulk amorphous Fe67Co9.5Nd3Dy0.5B20 alloy by hot extrusion of ribbon and study of the magnetic properties
    Biswas, K.
    Ram, S.
    Roth, S.
    Schultz, L.
    Eckert, J.
    [J]. JOURNAL OF MATERIALS SCIENCE, 2006, 41 (11) : 3445 - 3450
  • [4] Crystallization kinetics of amorphous Fe67Co9.5Nd3Dy0.5B20
    Biswas, K
    Ram, S
    Schultz, L
    Eckert, J
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2005, 397 (1-2) : 104 - 109
  • [5] Magnetic and microstructural properties of nanocrystalline exchange coupled PrFeB permanent magnets
    Goll, D
    Seeger, M
    Kronmuller, H
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 185 (01) : 49 - 60
  • [6] Super-high strength of over 4000 MPa for Fe-based bulk glassy alloys in [(Fe1-x,COx)0.75B0.2Si0.05]96Nb4 system
    Inoue, A
    Shen, BL
    Chang, CT
    [J]. ACTA MATERIALIA, 2004, 52 (14) : 4093 - 4099
  • [7] Bulk amorphous alloys with high mechanical strength and good soft magnetic properties in Fe-TM-B (TM=IV-VIII group transition metal) system
    Inoue, A
    Zhang, T
    Takeuchi, A
    [J]. APPLIED PHYSICS LETTERS, 1997, 71 (04) : 464 - 466
  • [8] HIGH-STRENGTH BULK AMORPHOUS-ALLOYS WITH LOW CRITICAL COOLING RATES
    INOUE, A
    [J]. MATERIALS TRANSACTIONS JIM, 1995, 36 (07): : 866 - 875
  • [9] Effect of microstructure on the magnetic properties of mold-cast and melt-spun Nd-Fe-Co-Al amorphous alloys
    Kumar, G
    Eckert, J
    Roth, S
    Löser, W
    Schultz, L
    Ram, S
    [J]. ACTA MATERIALIA, 2003, 51 (01) : 229 - 238
  • [10] Soft magnetic ternary iron-boron-based bulk metallic glasses
    Lin, CY
    Tien, HY
    Chin, TS
    [J]. APPLIED PHYSICS LETTERS, 2005, 86 (16) : 1 - 3
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