Highly enhancing electromagnetic properties in Fe-Si/MnO-SiO2 soft magnetic composites by improving coating uniformity

Luo, Zigui; Fan, Xiaoliang; Feng, Bo; Yang, Zhenjia; Chen, Dingya; Jiang, Shangwei; Wang, Jian; Wu, Zhaoyang; Liu, Xin; Li, Guangqiang; Li, Yawei

doi:10.1016/j.apt.2021.10.039

Cited by 15 publications

(4 citation statements)

References 44 publications

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“…Qualitatively, better uniformity indicates higher inter-particle electrical insulation, which not only hinders the generation of inter-particle eddy currents but also reduces the magnetic weakening caused by additional non-magnetic agglomeration. 24 Consequently, resistivity was used to characterise the electrical insulation of the prepared Fe–Si@SiO 2 SMPCs. The variation in resistivity is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Effects of axial pressure on the evolution of core–shell heterogeneous structures and magnetic properties of Fe–Si soft magnetic powder cores during hot-press sintering

Qiu

Wang

et al. 2022

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Effects of axial pressure on the evolution of core–shell heterogeneous structures and magnetic properties of Fe–Si soft magnetic powder cores during hot-press sintering

Qiu

Wang

et al. 2022

RSC Adv.

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“…Although the p bilities of both the Fe-Si-Cr and Fe-Si-Cr/AOx SMCs decreased with increasing te Quantitative analysis of the uniformity of the insulating layer of SMCs is difficult. However, a more uniform insulating layer can suppress interparticle eddy currents more effectively, improve the electrical insulation between alloy powders, and reduce the magnetic dilution phenomenon caused by the agglomeration of nonmagnetic substances [38]. Therefore, in this study, the effects of four metal oxide insulating layers on the insulating properties of Fe-Si-Cr/AO x SMCs were investigated by introducing resistivity.…”

Section: Effect Of Distinct Metal Oxide Insulating Layers On the Magn...mentioning

confidence: 99%

Effect of Various Metal Oxide Insulating Layers on the Magnetic Properties of Fe-Si-Cr Systems

Huang

et al. 2023

Coatings

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Iron-based soft magnetic composites (SMCs) are the key components of high-frequency electromagnetic systems. Selecting a suitable insulating oxide layer and ensuring the integrity and homogeneity of the heterogeneous core–shell structure of SMCs are essential for optimizing their magnetic properties. In this study, four types of SMCs—Fe-Si-Cr/ZrO2, Fe-Si-Cr/TiO2, Fe-Si-Cr/MgO, and Fe-Si-Cr/CaO—were prepared via ball milling, followed by hot-press sintering. The differences between the microscopic morphologies and magnetic fproperties of the Fe-Si-Cr/AOx SMCs prepared using four different metal oxides were investigated. ZrO2, TiO2, MgO, and CaO were successfully coated on the surface of the Fe-Si-Cr alloy powders through ball milling, forming a heterogeneous Fe-Si-Cr/AOx core–shell structure with the Fe-Si-Cr alloy powder as the core and the metal oxide as the shell. ZrO2 is relatively hard and less prone to breakage and refinement during ball milling, resulting in a lower degree of agglomeration on the surface of the composites and prevention of peeling and collapse during hot-press sintering. When ZrO2 was used as the insulation layer, the magnetic dilution effect was minimized, resulting in the highest resistivity (4.2 mΩ·cm), lowest total loss (580.8 kW/m3 for P10mt/100kHz), and lowest eddy current loss (470.0 kW/m3 for Pec 10mt/100kHz), while the permeability stabilized earlier at lower frequencies.

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“…Ferrite has both dielectric loss and magnetic loss, and absorbs microwave energy mainly through magnetic loss [49,50]. Some studies have pointed out that the compounds composed of Si and related metals such as Fe and Al have good electromagnetic properties and can absorb microwaves [51,52]. Among the three phases of limestone, the second phase was related to Si and Al compounds.…”

Section: Phase Composition Of Aggregatesmentioning

confidence: 99%

Microwave heating mechanism and self-healing performance of asphalt mixture with basalt and limestone aggregates

Zhu

Shu

et al. 2022

Construction and Building Materials

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Highly enhancing electromagnetic properties in Fe-Si/MnO-SiO2 soft magnetic composites by improving coating uniformity

Cited by 15 publications

References 44 publications

Effects of axial pressure on the evolution of core–shell heterogeneous structures and magnetic properties of Fe–Si soft magnetic powder cores during hot-press sintering

Effects of axial pressure on the evolution of core–shell heterogeneous structures and magnetic properties of Fe–Si soft magnetic powder cores during hot-press sintering

Effect of Various Metal Oxide Insulating Layers on the Magnetic Properties of Fe-Si-Cr Systems

Microwave heating mechanism and self-healing performance of asphalt mixture with basalt and limestone aggregates

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