Effect of annealing temperature on microstructure and magnetic properties of α-Fe/Nd2Fe14B nanocomposite magnets

被引：2

作者：

Pan, M. X. ^{[1
]}

Zhang, P. Y. ^{[1
]}

Ge, H. L. ^{[1
]}

Wu, Q. ^{[1
]}

Yu, N. J. ^{[1
]}

机构：

[1] China Jiliang Univ, Magnetism Key Lab Zhejiang Prov, Hangzhou 310018, Zhejiang, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2014年 / 30卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Nanocomposite magnet; Magnetic property; Exchange coupling;

D O I：

10.1179/1743284713Y.0000000418

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The alpha-Fe/Nd2Fe14B nanocomposite magnets were prepared by melt spinning method and subsequent thermal annealing. The effect of the annealing temperature on the microstructure and magnetic properties of these alloys have been investigated. An enhanced magnetic properties has been obtained with the annealing temperature at 610 degrees C, where the coercivity H-c increases from 365.05 to 434.86 kA m(-1) and the largest (BH)(max) value of 94.67 kJ m(-3) is achieved. According to the Henkel plots analysis, a stronger intergrain exchange coupling is obtained for the alloys annealed at 610 and 680 degrees C, which result in a higher maximum energy product.

引用

页码：832 / 834

页数：3

共 15 条

[1] Influence of Zr and Nb dopant additions on the microstructure and magnetic properties of nanocomposite RE2(Fe,Co)14B/α(Fe,Co) (RE = Nd-Pr) alloys [J].

Betancourt, I ;

Davies, HA .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2003, 261 (03) :328-336

[2] MELTSPUN PERMANENT-MAGNET MATERIALS CONTAINING FE3B AS THE MAIN PHASE [J].

COEHOORN, R ;

DEMOOIJ, DB ;

DEWAARD, C .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1989, 80 (01) :101-104

[3] Nanophase hard magnets [J].

Hadjipanayis, GC .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :373-391

[4] Magnetic properties of nanocomposite Nd2(Fe,Co,M)14B/α-Fe-bonded magnets [J].

Jakubowicz, J ;

Jurczyk, M .

JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 269 (1-2) :284-287

[5]

KELLY PE, 1989, IEEE T MAGN, V25, P3880

[6] THE EXCHANGE-SPRING MAGNET - A NEW MATERIAL PRINCIPLE FOR PERMANENT-MAGNETS [J].

KNELLER, EF ;

HAWIG, R .

IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (04) :3588-3600

[7]

Li W., 2006, J APPL PHYS, V99

[8] Study of the microstructure of α-Fe/Nd2Fe14B nanocomposites prepared by electropulsing heating amorphous NdFeCoB [J].

Li, XH ;

Gao, ZS ;

Li, W ;

Zhang, KW ;

Zhang, JW ;

Zhang, XY .

MATERIALS LETTERS, 2005, 59 (22) :2782-2785

[9]

Liu Z., 2010, J APPL PHYS, V107

[10] GIANT ENERGY PRODUCT IN NANOSTRUCTURED 2-PHASE MAGNETS [J].

SKOMSKI, R ;

COEY, JMD .

PHYSICAL REVIEW B, 1993, 48 (21) :15812-15816

← 1 2 →