High temperature magnetic properties of SmCo5/α-Fe(Co) bulk nanocomposite magnets

被引：30

作者：

Rong, Chuanbing ^{[1
]}

Poudyal, Narayan ^{[1
]}

Liu, X. B. ^{[1
]}

Zhang, Ying ^{[1
,2
]}

Kramer, M. J. ^{[2
]}

Liu, J. Ping ^{[1
]}

机构：

[1] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA

[2] Iowa State Univ, USDOE, Ames Lab, Div Mat Sci & Engn, Ames, IA 50011 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 15期

关键词：

PERMANENT-MAGNETS; COERCIVITY; DEPENDENCE; FE; CU; MECHANISM; SM(CO;

D O I：

10.1063/1.4758480

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To find alternative high temperature magnets containing no heavy rare earths for power applications, SmCo5/Fe bulk nanocomposite magnets with enhanced energy density and high thermal stability have been produced by using a ball-milling plus warm-compaction route. Up to 30% of the Fe soft magnetic phase has been added to the composites with grain size <20 nm distributed homogenously in the matrix of the SmCo5 hard magnetic phase. It was observed that the microstructure does not change with temperature up to 500 degrees C. It is also observed that the thermal stability of bulk nanocomposite samples is closely related to bulk density. Energy products above 11 MGOe have been obtained at 300 degrees C in fully dense bulk SmCo5/Fe nanocomposite magnets, which is 65% higher than that of a single-phase counterpart at the same temperature. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4758480]

引用

页数：3

共 18 条

[11] Abnormal temperature dependence of intrinsic coercivity in Sm(Co, Fe, Cu, Zr)z powder materials [J].

Liu, JF ;

Chui, T ;

Dimitrov, D ;

Hadjipanayis, GC .

APPLIED PHYSICS LETTERS, 1998, 73 (20) :3007-3009

[12] Mechanism of the anomalous temperature dependence of coercivity in Sm(Co,Fe,Cu,Zr)z high-temperature magnets -: art. no. 042504 [J].

Rong, CB ;

Zhang, HW ;

Shen, BG ;

Liu, JP .

APPLIED PHYSICS LETTERS, 2006, 88 (04) :1-3

[13] Self-nanoscaling of the soft magnetic phase in bulk SmCo/Fe nanocomposite magnets [J].

Rong, Chuanbing ;

Zhang, Ying ;

Poudyal, Narayan ;

Szlufarska, Izabela ;

Hebert, Rainer J. ;

Kramer, M. J. ;

Liu, J. Ping .

JOURNAL OF MATERIALS SCIENCE, 2011, 46 (18) :6065-6074

[14] Fabrication of bulk nanocomposite magnets via severe plastic deformation and warm compaction [J].

Rong, Chuanbing ;

Zhang, Ying ;

Poudyal, Narayan ;

Xiong, Xiangyuan ;

Kramer, M. J. ;

Liu, J. Ping .

APPLIED PHYSICS LETTERS, 2010, 96 (10)

[15] Preparation and magnetic properties of melt-spun Nd2Fe14(BC)/α-Fe nanocomposite magnets [J].

Wang, ZC ;

Davies, HA ;

Zhou, SZ ;

Zhang, MC ;

Qiao, Y .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) :7884-7886

[16] Structure and magnetic properties of bulk nanocrystalline SmCo7-xHfx sintered magnets [J].

Zhang, Dongtao ;

Yue, Ming ;

Pan, Lijun ;

Li, Yangchao ;

Xu, Gang ;

Liu, Weiqiang ;

Zhang, Jiuxing ;

Liu, Xubo ;

Altounian, Zaven .

JOURNAL OF APPLIED PHYSICS, 2008, 103 (07)

[17] Structure and magnetic properties of SmxCo5/α-Fe (x=0.65-1.3) prepared by mechanical milling and subsequent annealing [J].

Zhang, J ;

Zhang, SY ;

Zhang, HW ;

Shen, BG ;

Li, BH .

JOURNAL OF APPLIED PHYSICS, 2001, 89 (05) :2857-2860

[18] Microstructure and intergranular diffusion in exchange-coupled Sm-Co/Fe nanocomposites [J].

Zhang, Ying ;

Kramer, M. J. ;

Rong, Chuanbing ;

Liu, J. Ping .

APPLIED PHYSICS LETTERS, 2010, 97 (03)

← 1 2 →