Self-nanoscaling in FeCo alloys prepared via severe plastic deformation

被引：47

作者：

Poudyal, Narayan ^{[1
]}

Rong, Chuanbing ^{[1
]}

Zhang, Ying ^{[1
,2
]}

Wang, Dapeng ^{[1
]}

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

Hebert, Rainer J. ^{[3
]}

Liu, J. Ping ^{[1
]}

机构：

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

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

[3] Univ Connecticut, Dept Chem Mat & Biomol Engn, Storrs, CT 06269 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 521卷

关键词：

FeCo alloys; Nanocrystalline materials; Soft magnetic materials; MAGNETIC-PROPERTIES; SILICON NANOWIRES; SUPERLATTICES; NANOPARTICLES; POWDERS;

D O I：

10.1016/j.jallcom.2012.01.026

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：

Nanocrystalline Fe100-xCox (x = 20, 35, 50, 60) alloys have been prepared by mechanical alloying of Fe and Co powders via high energy ball milling. The alloy formation process and microstructure evolution of the samples have been investigated. Energy filtered transmission microscopy (EFTEM) observations revealed the strip formation of the Fe and Co phases at an initial stage of milling. The final grain size of the equiaxed grains in the obtained alloys reached 8 nm upon milling for 20 h. The saturation magnetization of the mixtures of Fe and Co increases with milling time, indicating an increasing homogeneity in composition and the phase formation. It is found that the saturation magnetization is also dependent on the Co content, which reaches the highest value of 240 emu/g at Fe65Co35. The phase transformation of the as-prepared FeCo alloys was also studied using differential scanning calorimetry. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：55 / 59

页数：5

共 21 条

[1] Magnetic properties of nanostructured ball-milled Fe and Fe50Co50 alloy [J].

Azzaza, S. ;

Alleg, S. ;

Moumeni, H. ;

Nemamcha, A. R. ;

Rehspringer, J. L. ;

Greneche, J. M. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2006, 18 (31) :7257-7272

[2] MECHANISM OF MECHANICAL ALLOYING [J].

BENJAMIN, JS ;

VOLIN, TE .

METALLURGICAL TRANSACTIONS, 1974, 5 (08) :1929-1934

[3] Silicon nanowires as efficient thermoelectric materials [J].

Boukai, Akram I. ;

Bunimovich, Yuri ;

Tahir-Kheli, Jamil ;

Yu, Jen-Kan ;

Goddard, William A., III ;

Heath, James R. .

NATURE, 2008, 451 (7175) :168-171

[4] Synthesis and stabilization of FeCo nanoparticles [J].

Chaubey, Girija S. ;

Barcena, Carlos ;

Poudyal, Narayan ;

Rong, Chuanbing ;

Gao, Jinming ;

Sun, Shouheng ;

Liu, J. Ping. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (23) :7214-+

[5] Multimillimetre-large superlattices of air-stable iron-cobalt nanoparticles [J].

Desvaux, C ;

Amiens, C ;

Fejes, P ;

Renaud, P ;

Respaud, M ;

Lecante, P ;

Snoeck, E ;

Chaudret, B .

NATURE MATERIALS, 2005, 4 (10) :750-753

[6] Control of gigahertz permeability and permittivity dispersion by means of nanocrystallization in FeCo based nanocrystalline alloy [J].

Han, Mangui ;

Lu, Haipeng ;

Deng, Longjiang .

APPLIED PHYSICS LETTERS, 2010, 97 (19)

[7] Enhanced thermoelectric performance of rough silicon nanowires [J].

Hochbaum, Allon I. ;

Chen, Renkun ;

Delgado, Raul Diaz ;

Liang, Wenjie ;

Garnett, Erik C. ;

Najarian, Mark ;

Majumdar, Arun ;

Yang, Peidong .

NATURE, 2008, 451 (7175) :163-U5

[8] Experimental and theoretical investigation of cubic FeCo nanoparticles for magnetic hyperthermia [J].

Jing, Ying ;

Sohn, Hweerin ;

Kline, Timothy ;

Victora, Randall H. ;

Wang, Jian-Ping .

JOURNAL OF APPLIED PHYSICS, 2009, 105 (07)

[9] Formation of nanocrystalline Fe-Co powders produced by mechanical alloying [J].

Kim, YD ;

Chung, JY ;

Kim, J ;

Jeon, H .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 291 (1-2) :17-21

[10] PHASE FORMATION AND MARTENSITIC-TRANSFORMATION IN MECHANICALLY ALLOYED NANOCRYSTALLINE FE-NI [J].

KUHRT, C ;

SCHULTZ, L .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (04) :1975-1980

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