Ultra-low inter-particle eddy current loss of Fe3Si/Al2O3 soft magnetic composites evolved from FeSiAl/Fe3O4 core-shell particles

Luo, Fan; Fan, Xiaoliang; Luo, Zigui; Hu, Wentao; Li, Guangqiang; Li, Yawei; Liu, Xin; Wang, Jian

doi:10.1016/j.jmmm.2019.04.027

Cited by 55 publications

(12 citation statements)

References 22 publications

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“…The presence of Fe 2 O 3 was also confirmed by the detection of the satellite peak at 719.68 eV, which is associated with Fe 2p 3/2 for Fe 2 O 3 [48]. The Fe 2p 1/2 XPS peak comprised of the Fe 2+ (723.18 eV) and Fe 3+ (729.22 eV) peaks [44]. Figure 5g that Al 0 and Al 3+ [44,47] were detected at the binding energy of 72.36 eV and 74.54 eV.…”

Section: Effect Of Mwcnt Content On the Properties Of The Nanocompositesmentioning

confidence: 76%

“…Generally, the Fe 2p spectra present two major peaks Fe 2p 1/2 and Fe2p 3/2 . Figure 5f shows that the Fe 2p 3/2 XPS peak exhibited Fe 0 , Fe 2+ and Fe 3+ peaks located at 706.69 eV, 709.96 eV and 714.32 eV respectively [44][45][46]. The ratio of Fe 2+ /Fe 3+ in Fe 2p 3/2 was about 2:1, which was greater than the ratio 1:2 reported in [47,48].…”

Section: Effect Of Mwcnt Content On the Properties Of The Nanocompositesmentioning

confidence: 81%

“…Figure 5g that Al 0 and Al 3+ [44,47] were detected at the binding energy of 72.36 eV and 74.54 eV. It can be seen in Figure 5h that O 1s peak had three peaks after deconvolution, which are located at 529.65 eV, 530 eV and 531.81 eV, which correspond to Fe 2+ , Fe 3+ and Al 3+ respectively [44,45,47]. Based on the XPS analysis, it can be concluded that there was the formation of iron oxides (Fe 2 O 3 and Fe 3 O 4 ) and aluminum oxide (Al 2 O 3 ) on the surface of the composites.…”

Section: Effect Of Mwcnt Content On the Properties Of The Nanocompositesmentioning

confidence: 90%

“…The Fe 2p 1/2 XPS peak comprised of the Fe 2+ (723.18 eV) and Fe 3+ (729.22 eV) peaks [44]. Figure 5g that Al 0 and Al 3+ [44,47] were detected at the binding energy of 72.36 eV and 74.54 eV. It can be seen in Figure 5h that O 1s peak had three peaks after deconvolution, which are located at 529.65 eV, 530 eV and 531.81 eV, which correspond to Fe 2+ , Fe 3+ and Al 3+ respectively [44,45,47].…”

Section: Effect Of Mwcnt Content On the Properties Of The Nanocompositesmentioning

confidence: 99%

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The Effect of the Processing Parameters on the Properties of the Liquid Phase Spark Plasma Sintered 80Fe-20(Al + MWCNT) Magnetic Metal Matrix Nanocomposites

Tugirumubano

Kwac

et al. 2020

Metals

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In this paper, the liquid phase sintering was performed using spark plasma sintering to produce iron (Fe: 80 vol%)–aluminum (Al)–multi-walled carbon nanotubes (MWCNTs) magnetic hybrid metal matrix nanocomposites. The properties of the nanocomposites were investigated by considering different parameters of materials processing. The reinforcement of MWCNT with a content of 0–2 vol% did not affect the saturation magnetization of the nanocomposites but increased the coercivity and reduced both the electrical resistivity and the mechanical transverse rupture strength. It was found that milling the powders for 24 h resulted in composite with high saturation magnetization (148.820 A·m2/kg) and high coercivity (2175.6 A/m) but further milling time had reduced the values of magnetic properties. The mixture of Fe nanoparticles and Fe microparticles in composites with a nanoparticles-to-microparticles volume ratio of 1:1 has led to the enhanced saturation magnetization up to 157.820 A·m2/kg and reduced the coercivity of 50.20% in comparison with the Fe nanoparticles based nanocomposites. That mixture exhibited good electrical resistivity but caused the reduction of mechanical strength. The post-sintering annealing has significantly improved the magnetic softness of the composites by reducing the coercivity up to 854.30 A/m and increased the saturation magnetization.

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Section: Effect Of Mwcnt Content On the Properties Of The Nanocompositesmentioning

confidence: 76%

Section: Effect Of Mwcnt Content On the Properties Of The Nanocompositesmentioning

confidence: 81%

Section: Effect Of Mwcnt Content On the Properties Of The Nanocompositesmentioning

confidence: 90%

Section: Effect Of Mwcnt Content On the Properties Of The Nanocompositesmentioning

confidence: 99%

See 2 more Smart Citations

The Effect of the Processing Parameters on the Properties of the Liquid Phase Spark Plasma Sintered 80Fe-20(Al + MWCNT) Magnetic Metal Matrix Nanocomposites

Tugirumubano

Kwac

et al. 2020

Metals

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“…Over the past decade, many researchers have focused on the design and controlled synthesis of insulated ferromagnetic C-S structures and the relationships between their structures and activities [6,7]. The design and preparation of SMCs and ferromagnetic/inorganic C-S structures using diverse insulative oxide coatings including Al 2 O 3 [8,9], SiO 2 [10], Fe 3 O 4 [11], MgO [12], and ZnO [13] were reported. Yan and coworkers investigated the influence of processing parameters on the magnetic properties of SMCs [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Formation Process of the Integrated Core(Fe-6.5wt.%Si)@Shell(SiO2) Structure Obtained via Fluidized Bed Chemical Vapor Deposition

Cheng

Jia

et al. 2020

Metals

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As electromagnetic functional materials, soft magnetic composites (SMCs) have great potential for applications in high-energy electromagnetic conversion devices. The most effective way to optimize the performance of an SMC is to incorporate it into insulated ferromagnetic core-shell particles with high structural uniformity and integrity. Fluidized bed chemical vapor deposition (FBCVD) is a facile and efficient technique for the synthesis of ferromagnetic/SiO2 core-shell particles. However, the formation mechanism and conditions of integrated ferromagnetic/SiO2 core-shell structures during the FBCVD process are not fully understood. On this basis, the formation process and the deposition time required for transformation of the Fe-6.5wt.%Si substrate into the Fe-6.5wt.%Si/SiO2 composite, and finally into the Fe-6.5wt.%Si/SiO2 core-shell structure, were investigated. Deposition of the insulative SiO2 coating onto the Fe-6.5wt.%Si particles was described by the three-dimensional island nucleation theory. The SiO2 islands were initially concentrated in rough areas on the Fe-6.5wt.%Si particle substrates owing to the lower heterogeneous nucleation energy. Deposition for at least 960 s was necessary to obtain the integrated ferromagnetic/SiO2 core-shell structure. The uniformity, integrity, and thickness of the insulative SiO2 coating increased with the increasing deposition time. The results in this study may provide a foundation for future kinetics investigations and the application of FBCVD technology.

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High Effective Permeability and Low Power Loss of FeSiAl/Al₂O₃/ZnO SMC for High Frequency Application

Li,

Lu,

et al. 2024

Adv Funct Materials

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Soft magnetic composites (SMCs) are key materials in electronic devices. Conventional SMCs incorporate too much insulating material in order to reduce eddy current loss at high frequency, resulting in severe magnetic dilution and demagnetization field, which leads to deterioration of the magnetic performance. In this paper, ZnO precursor is homogeneously deployed on the surface of FeSiAl, which in situ generates a thin and dense Al2O3 layer on the surface of FeSiAl through the interfacial solid phase reaction between Al and O atoms during annealing process. Meanwhile, ferromagnetic ZnO layer is simultaneously obtained due to the loss of O. The formed Al2O3/ZnO layers effectively reduce power loss and endow high frequency stability with less influence on effective permeability. Finally, FeSiAl/ZnO‐0.4% SMC exhibits low power loss of 83.2 mW cm−3 (50 mT/100 kHz), high effective permeability of 92, and cut‐off frequency as high as 40 MHz. This study provides an efficient route for high performance SMCs and broadens high frequency application of soft magnetic devices.

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Ultra-low inter-particle eddy current loss of Fe3Si/Al2O3 soft magnetic composites evolved from FeSiAl/Fe3O4 core-shell particles

Cited by 55 publications

References 22 publications

The Effect of the Processing Parameters on the Properties of the Liquid Phase Spark Plasma Sintered 80Fe-20(Al + MWCNT) Magnetic Metal Matrix Nanocomposites

The Effect of the Processing Parameters on the Properties of the Liquid Phase Spark Plasma Sintered 80Fe-20(Al + MWCNT) Magnetic Metal Matrix Nanocomposites

Formation Process of the Integrated Core(Fe-6.5wt.%Si)@Shell(SiO2) Structure Obtained via Fluidized Bed Chemical Vapor Deposition

High Effective Permeability and Low Power Loss of FeSiAl/Al₂O₃/ZnO SMC for High Frequency Application

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Ultra-low inter-particle eddy current loss of Fe3Si/Al2O3 soft magnetic composites evolved from FeSiAl/Fe3O4 core-shell particles

Cited by 55 publications

References 22 publications

The Effect of the Processing Parameters on the Properties of the Liquid Phase Spark Plasma Sintered 80Fe-20(Al + MWCNT) Magnetic Metal Matrix Nanocomposites

The Effect of the Processing Parameters on the Properties of the Liquid Phase Spark Plasma Sintered 80Fe-20(Al + MWCNT) Magnetic Metal Matrix Nanocomposites

Formation Process of the Integrated Core(Fe-6.5wt.%Si)@Shell(SiO2) Structure Obtained via Fluidized Bed Chemical Vapor Deposition

High Effective Permeability and Low Power Loss of FeSiAl/Al2O3/ZnO SMC for High Frequency Application

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Product

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High Effective Permeability and Low Power Loss of FeSiAl/Al₂O₃/ZnO SMC for High Frequency Application