Preparation and magnetic properties of core-shell structured Fe-Si/Fe3O4 composites via in-situ reaction method

被引：19
作者：
Zhang, Chi [1 ,2 ]
Zhang, Wei [1 ]
Yuan, Wuhua [2 ]
Peng, Kun [1 ,2 ]
机构：
[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Hunan Engn Technol Res Ctr Microwave Devices & Eq, Changsha 410082, Hunan, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2021年 / 531卷
基金：
中国国家自然科学基金;
关键词：
Soft magnetic composites; Core-shell; Growth mechanism; In-situ reaction; Magnetic properties; XPS SPECTRA; MICROSTRUCTURE; COATINGS; POWDERS; AL2O3;
D O I：
10.1016/j.jmmm.2021.167955
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Fe-Si/Fe3O4 soft magnetic composites (SMCs) have been fabricated via in-situ reaction method. A layer of Fe3O4 was formed on the Fe-Si particles in the KNO3 solution, and the growth mechanism of the Fe3O4 coating layer has been studied, and its formation and thickness can be controlled by adjusting the concentration of KNO3 solution to obtain the microstructure of the composites and then adjust the magnetic performance of SMCs. The formation of Fe3O4 shell on Fe-Si particles can effectively reduce the core loss of the composites. The samples in-situ reacted in 0.1 mol/L KNO3 solution exhibit excellent comprehensive properties with high saturation magnetization, relatively high permeability (34), great frequency stability of permeability, and very low core loss of 13.6 w/kg (measured at 20 mT and 150 kHz).
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页数：6
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共 32 条
[1]   CRYSTALLIZATION MECHANISMS IN SOLUTION [J].
BOISTELLE, R ;
ASTIER, JP .
JOURNAL OF CRYSTAL GROWTH, 1988, 90 (1-3) :14-30
[2]   Structure and magnetic properties of ZrO2-coated Fe powders and Fe/ZrO2 soft magnetic composites [J].
Geng, Kaijie ;
Xie, Yuye ;
Xu, Lili ;
Yan, Biao .
ADVANCED POWDER TECHNOLOGY, 2017, 28 (09) :2015-2022
[3]   Fe-Si/ZrO2 composites with core-shell structure and excellent magnetic properties prepared by mechanical milling and spark plasma sintering [J].
Geng, Kaijie ;
Xie, Yuye ;
Yan, Liang ;
Yan, Biao .
JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 718 :53-62
[4]   Investigation of multiplet splitting of Fe 2p XPS spectra and bonding in iron compounds [J].
Grosvenor, AP ;
Kobe, BA ;
Biesinger, MC ;
McIntyre, NS .
SURFACE AND INTERFACE ANALYSIS, 2004, 36 (12) :1564-1574
[5]   The correlations between processing parameters and magnetic properties of an iron-resin soft magnetic composite [J].
Hemmati, I. ;
Hosseini, H. R. Madaah ;
Kianvash, A. .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 305 (01) :147-151
[6]   Magnetic properties and loss separation in FeSi/MnZnFe2O4 soft magnetic composites [J].
Lauda, M. ;
Fuezer, J. ;
Kollar, P. ;
Streckova, M. ;
Bures, R. ;
Kovac, J. ;
Bat'kova, M. ;
Bat'ko, I. .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2016, 411 :12-17
[7]   Soft Magnetic Materials in High-Frequency, High-Power Conversion Applications [J].
Leary, Alex M. ;
Ohodnicki, Paul R. ;
McHenry, Michael E. .
JOM, 2012, 64 (07) :772-781
[8]   The preparation and magnetic performance of the iron-based soft magnetic composites with the Fe@Fe3O4 powder of in situ surface oxidation [J].
Li, Jingxin ;
Yu, Jing ;
Li, Wangchang ;
Che, Shenglei ;
Zheng, Jingwu ;
Qiao, Liang ;
Ying, Yao .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2018, 454 :103-109
[9]   In-situ formation of Fe3O4 and ZrO2 coated Fe-based soft magnetic composites by hydrothermal method [J].
Li, Wangchang ;
Wang, Zhaojia ;
Ying, Yao ;
Yu, Jing ;
Zheng, Jingwu ;
Qiao, Liang ;
Che, Shenglei .
CERAMICS INTERNATIONAL, 2019, 45 (03) :3864-3870
[10]   Correlating the microstructure, growth mechanism and magnetic properties of FeSiAl soft magnetic composites fabricated via HNO3 oxidation [J].
Liu, Dong ;
Wu, Chen ;
Yan, Mi ;
Wang, Jian .
ACTA MATERIALIA, 2018, 146 :294-303
1234