Large-size anisotropic bulk SmCo/Fe(Co) nanocomposite magnets prepared by hot rolling at extreme conditions

被引：14

作者：

Feng, Yunyun ^{[1
,2
]}

Lou, Li ^{[1
]}

Li, Ming ^{[1
]}

Song, Wenpeng ^{[1
]}

Li, Tianhao ^{[1
]}

Hua, Yingxin ^{[1
]}

Li, Xiaohong ^{[1
,2
]}

Zhang, Xiangyi ^{[1
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China

[2] Yanshan Univ, Sch Sci, Key Lab Microstruct Mat Phys Hebei Prov, Qinhuangdao 066004, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 744卷

关键词：

Nanocomposite magnets; Anisotropy; Bulk; Hot rolling; Texture; PERMANENT-MAGNETS; ENERGY PRODUCTS; ALLOYS; NANOSTRUCTURES; ALIGNMENT; PHASE;

D O I：

10.1016/j.jallcom.2018.02.085

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：

A macroscopically large-size anisotropic bulk SmCo/Fe(Co) nanocomposite magnet with a small grain size (similar to 10 nm) and a (00l) texture along easy magnetization axis has been prepared by rolling the heated Sm-Co amorphous precursors containing alpha-Fe(Co) nanocrystals at large strain and high stress. This anisotropic magnet exhibits a significantly enhanced energy product of 21 MGOe compared with that (14.5 MGOe) of the corresponding isotropic magnet. This enhanced property is attributed to the remanence enhancement which results from the SmCo7 hard-phase grain alignment along easy magnetization axis and the small grain size for the soft and hard phases. The large size and high-performance of the fabricated magnets and the simplicity of manufacturing make them great potential for practical applications. (c) 2018 Elsevier B.V. All rights reserved.

引用

页码：104 / 109

页数：6

共 39 条

[1] Novel Nanostructured Rare-Earth-Free Magnetic Materials with High Energy Products [J].

Balasubramanian, Balamurugan ;

Das, Bhaskar ;

Skomski, Ralph ;

Zhang, Wenyong Y. ;

Sellmyer, David J. .

ADVANCED MATERIALS, 2013, 25 (42) :6090-6093

[2] Hard Magnetic Materials: A Perspective [J].

Coey, J. M. D. .

IEEE TRANSACTIONS ON MAGNETICS, 2011, 47 (12) :4671-4681

[3] Nd2Fe14B/FeCo Anisotropic Nanocomposite Films with a Large Maximum Energy Product [J].

Cui, Wei-Bin ;

Takahashi, Yukiko K. ;

Hono, Kazuhiro .

ADVANCED MATERIALS, 2012, 24 (48) :6530-6535

[4] The mechanism of magnetic alignment in hot rolled Nd-Fe-B magnets [J].

Ferrante, M ;

de Freitas, E ;

Sinka, V .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 188 (1-2) :125-137

[5] Die-upset hybrid Pr-Fe-B nanocomposite magnets [J].

Gabay, AM ;

Zhang, Y ;

Hadjipanayis, GC .

APPLIED PHYSICS LETTERS, 2004, 85 (03) :446-448

[6] High-performance permanent magnets [J].

Goll, D ;

Kronmüller, H .

NATURWISSENSCHAFTEN, 2000, 87 (10) :423-438

[7] Magnetic Materials and Devices for the 21st Century: Stronger, Lighter, and More Energy Efficient [J].

Gutfleisch, Oliver ;

Willard, Matthew A. ;

Bruck, Ekkes ;

Chen, Christina H. ;

Sankar, S. G. ;

Liu, J. Ping .

ADVANCED MATERIALS, 2011, 23 (07) :821-842

[8] The influence of milling and annealing conditions on the structural and magnetic behavior of Nd2Fe14B/α-Fe hard/soft magnetic nanocomposites [J].

Gutoiu, Simona ;

Isnard, Olivier ;

Chicinas, Ionel ;

Popa, Florin ;

Takacs, Albert ;

Pop, Viorel .

JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 646 :859-865

[9] Determination of biaxial texture and intrinsic magnetic properties of hot rolled NdFeB samples [J].

Hinz, D ;

Wirth, S ;

Eckert, D ;

Helming, K ;

Muller, KH .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1996, 157 :43-44

[10] MICROSTRUCTURE AND MAGNETIC-PROPERTIES OF ANISOTROPIC NDFEB POWDERS FROM HOT-ROLLED INGOTS BY HD PROCESS [J].

HINZ, D ;

HANDSTEIN, A ;

HARRIS, IR .

IEEE TRANSACTIONS ON MAGNETICS, 1994, 30 (02) :601-603

← 1 2 3 4 →