Facile synthesis of Fe-6.5wt%Si/SiO2 soft magnetic composites as an efficient soft magnetic composite material at medium and high frequencies

被引：69
作者：
Wu, Z. Y. [1 ,2 ]
Jiang, Z. [1 ]
Fan, X. A. [2 ]
Zhou, L. J. [1 ,3 ]
Wang, W. L. [1 ,3 ]
Xu, K. [1 ]
机构：
[1] Anhui Univ Technol, Minist Educ, Key Lab Met Emiss Reduct & Resources Recycling, Maanshan 243002, Peoples R China
[2] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China
[3] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 742卷
基金：
中国国家自然科学基金;
关键词：
Fe-6.5wt%Si alloy; Soft magnetic composite materials; Fluidized in-situ chemical vapor deposition; Spark plasma sintering; Core loss; CHEMICAL-VAPOR-DEPOSITION; CORE LOSS; FE; NANOPARTICLES; RESISTIVITY; KINETICS;
D O I：
10.1016/j.jallcom.2018.01.307
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：
Fe-6.5wt%Si/SiO2 soft magnetic composites (SMCs) were successfully designed to reduce the core loss and improve the magnetic properties of Fe-6.5wt%Si alloy via the fluidized in-situ chemical vapor deposition method combined with the subsequent spark plasma sintering (SPS) process. Most conductive Fe-6.5wt%Si particles were firstly coated with SiO2 during chemical vapor deposition, and the highly compact and insulated Fe-6.5wt%Si/SiO2 SMCs were then obtained quickly by the spark plasma sintering. A 470 nm thick SiO2 insulating layer was found to exist uniformly and densely around Fe-6.5wt%Si particles in Fe-6.5wt%Si/SiO2 SMCs with the fluidized chemical vapor deposition (FCVD) process. It caused these SMCs to exhibit much higher electrical resistivity, lower core loss, and better frequency stability of permeability than those of raw Fe-6.5wt%Si compacts and Fe-6.5wt%Si/SiO2 SMCs with the conventional chemical vapor deposition (CVD) process. This new method provides a promising way to optimize the magnetic properties of soft magnetic composite materials, which can possess larger energy conversion efficiency for the electric-magnetic switching devices. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：90 / 98
页数：9
相关论文
共 35 条
[1]   Ordered phases and texture in spray-formed Fe-5 wt%Si [J].
Cava, D. ;
Botta, W. J. ;
Kiminami, C. S. ;
Olzon-Dionysio, M. ;
Souza, S. D. ;
Jorge, A. M., Jr. ;
Bolfarini, C. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 :S260-S264
[2]   Core-shell structured Fe3O4@SiO2 nanoparticles fabricated by sol-gel method and their magnetorheology [J].
Chae, Hyun Sik ;
Kim, Sang Deuk ;
Piao, Shang Hao ;
Choi, Hyoung Jin .
COLLOID AND POLYMER SCIENCE, 2016, 294 (04) :647-655
[3]   Chemical kinetics in chemical vapor deposition: growth of silicon dioxide from tetraethoxysilane (TEOS) [J].
Coltrin, ME ;
Ho, P ;
Moffat, HK ;
Buss, RJ .
THIN SOLID FILMS, 2000, 365 (02) :251-263
[4]   Influence of mechanical factors on solidification structure of thin strips of Fe-6.5wt-% Si alloy by twin roll casting process [J].
Dong, Q. ;
Chen, S. L. ;
Cao, G. M. .
IRONMAKING & STEELMAKING, 2016, 43 (01) :1-4
[5]   Magnetic metamaterials at telecommunication and visible frequencies [J].
Enkrich, C ;
Wegener, M ;
Linden, S ;
Burger, S ;
Zschiedrich, L ;
Schmidt, F ;
Zhou, JF ;
Koschny, T ;
Soukoulis, CM .
PHYSICAL REVIEW LETTERS, 2005, 95 (20)
[6]   High resistivity and low core loss of intergranular insulated Fe-6.5 wt.%Si/SiO2 composite compacts [J].
Fan, X. A. ;
Wu, Z. Y. ;
Li, G. Q. ;
Wang, J. ;
Xiang, Z. D. ;
Gan, Z. H. .
MATERIALS & DESIGN, 2016, 89 :1251-1258
[7]  
Freund L. B., 2004, Thin Film Materials: Stress, Defect Formation and Surface Evolution
[8]   Applying the grain orientation dependence of deformation twinning to improve the deformation properties of an Fe-6.5 wt%Si alloy [J].
Fu, Huadong ;
Zhang, Zhihao ;
Jiang, Yanbin ;
Xie, Jianxin .
JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 689 :307-312
[9]   Ultra-low deformation rate sensitivity of columnar-grained Fe-6.5 wt% Si alloy with ⟨100⟩ orientation [J].
Fu, Huadong ;
Mo, Yuanke ;
Zhang, Zhihao ;
Xie, Jianxin .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 656 :90-93
[10]   Mechanically milled and spark plasma sintered FePt-based bulk magnets with high coercivity [J].
Gopalan, R ;
Kündig, AA ;
Ohnuma, M ;
Kishimoto, S ;
Hono, K .
SCRIPTA MATERIALIA, 2005, 52 (08) :761-765
1234