High performance of FeSiAl/hBN soft magnetic composites

Ni, Jiangli; Duan, F.; Feng, Shuangjiu; Hu, Feng; Kan, Xucai; Liu, X.S.

doi:10.1016/j.jallcom.2021.163191

Cited by 43 publications

(12 citation statements)

References 25 publications

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“…At low magnetic induction, P r is negligible. As a result, core losses can be expressed as follows: 19,20 where f , H , and B are the frequency, magnitude of the magnetic field, and magnetic induction strength used in sample testing, respectively. K e is a constant.…”

Section: Resultsmentioning

confidence: 99%

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Enhanced soft magnetic properties and high-frequency stability of FeNiMo powder cores by coating SiO₂ insulation layer

et al. 2023

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Section: Resultsmentioning

confidence: 99%

“…At low magnetic induction, P r is negligible. As a result, core losses can be expressed as follows: 19,20…”

Section: So Magnetic Propertiesmentioning

confidence: 99%

Enhanced soft magnetic properties and high-frequency stability of FeNiMo powder cores by coating SiO₂ insulation layer

et al. 2023

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“…The complex magnetic permeability represents the relationship between magnetic induction (B) and magnetic field strength (H) in an alternating magnetic field. 38 The real part of the complex magnetic permeability indicates the stability of noncrystalline SMCs below 10 MHz, with the highest value observed at a heat treatment temperature of 460 °C. However, SMCs synthesized using magnetic powder with larger particles exhibit lower stability in the imaginary part of the complex magnetic permeability compared to the other two components, as shown in Figure 6d−f.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…In order to explore the magnetic properties of non-crystalline SMCs, the complex magnetic permeability and quality factor ( Q value) of SMCs were assessed at various frequencies. The complex magnetic permeability represents the relationship between magnetic induction ( B ) and magnetic field strength ( H ) in an alternating magnetic field . The real part of the complex magnetic permeability indicates the stability of non-crystalline SMCs below 10 MHz, with the highest value observed at a heat treatment temperature of 460 °C.…”

Section: Resultsmentioning

confidence: 99%

Magnetic Properties of High DC Bias Performance Fe-Si-B-C-Cr Amorphous Soft Magnetic Composites

Shen,

Wang,

Liu

et al. 2023

ACS Appl. Electron. Mater.

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The present study investigates three types of Fe-Si-B-C-Cr non-crystalline magnetic powder and their effects on the magnetic properties of soft magnetic composites. Specifically, the study examines the impact of heat treatment temperature and particle size distribution. The results indicate a positive correlation between the size of the magnetic powder particles and saturation magnetization. Changes in heat treatment temperature similarly affected the magnetic properties of the three soft magnetic composites, with the optimal temperature for heat treatment determined to be 460 °C. Nonlinear fitting was used to separate the total loss, and it was found that non-crystalline soft magnetic composites made with small-sized magnetic powder exhibited lower eddy current loss under MHz magnetic field conditions. The relaxation phenomenon observed in the hysteresis loop with increasing frequency under a dynamic magnetic field explains the mechanism of power loss variation in soft magnetic composite materials with respect to magnetic field frequency and magnetic induction intensity. A high-performance non-crystalline soft magnetic composite with a power consumption of 372 kW/m3 was obtained at a magnetic induction intensity of 20 mT and a frequency of 1 MHz. Which demonstrated excellent stability under MHz magnetic field conditions as well as excellent DC bias characteristics, with a relative permeability above 90% under a DC bias magnetic field of 7.96 kA/m.

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“…7 While FeSiAl alloys have high starting permeability and saturation magnetic induction strength, which are favorable for obtaining lower thickness and higher reflection loss, and thus have gained widespread attention. 8,9 However, the drawbacks of narrow absorption bandwidth, high conductivity, and insufficient interfacial polarization limit their practical application in many fields. 10,11 Previous studies have shown that the dielectric constant of FeSiAl can be reduced, and good impedance matching can be obtained by surface oxidization and cladding insulating layers such as SiO 2 and Al 2 O 3.…”

Section: ■ Introductionmentioning

confidence: 99%

Fabrication and Microwave Absorption Properties of FeSiAl@PANI Composites

Liu,

Sun,

Yan

et al. 2023

ACS Appl. Electron. Mater.

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Composites of ferromagnetic particles and conductive polymers have potential applications in the wave-absorbing stealth technology. In this paper, FeSiAl@polyaniline (FeSiAl@ PANI) composites were prepared through in situ oxidative polymerization. Electromagnetic parameters of the FeSiAl composites were modulated by varying the aniline content. The inhomogeneous interface between amorphous PANI and FeSiAl provides interfacial polarization, charge accumulation, and defects in the PANI layer, which causes dipole polarization and conductive loss, so that multiple loss mechanisms result in the FeSiAl@PANI composites with superior absorbing properties. When 1 g of aniline monomer is added, the lowest reflection loss (RL) can be obtained for the S 1 sample at a thickness of only 1 mm with an RL min value of −37.87 dB. Radar cross-sectional (RCS) simulations using computer simulation technology (CST) for the S 1 sample showed an RCS reduction value of 31.64 dBm 2 . Therefore, the FeSiAl@PANI composite is anticipated to be a candidate material for radar stealth technology and electromagnetic absorption.

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High performance of FeSiAl/hBN soft magnetic composites

Cited by 43 publications

References 25 publications

Enhanced soft magnetic properties and high-frequency stability of FeNiMo powder cores by coating SiO₂ insulation layer

Enhanced soft magnetic properties and high-frequency stability of FeNiMo powder cores by coating SiO₂ insulation layer

Magnetic Properties of High DC Bias Performance Fe-Si-B-C-Cr Amorphous Soft Magnetic Composites

Fabrication and Microwave Absorption Properties of FeSiAl@PANI Composites

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High performance of FeSiAl/hBN soft magnetic composites

Cited by 43 publications

References 25 publications

Enhanced soft magnetic properties and high-frequency stability of FeNiMo powder cores by coating SiO2 insulation layer

Enhanced soft magnetic properties and high-frequency stability of FeNiMo powder cores by coating SiO2 insulation layer

Magnetic Properties of High DC Bias Performance Fe-Si-B-C-Cr Amorphous Soft Magnetic Composites

Fabrication and Microwave Absorption Properties of FeSiAl@PANI Composites

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Enhanced soft magnetic properties and high-frequency stability of FeNiMo powder cores by coating SiO₂ insulation layer

Enhanced soft magnetic properties and high-frequency stability of FeNiMo powder cores by coating SiO₂ insulation layer