The enhanced magnetic properties of FeSiCr powder cores composited with carbonyl iron powder

Gong, Mengji; Dong, Yaqiang; Huang, Jiale; Chang, Liang; Yan, Pengfei; Wang, Falong; He, Aina; Li, Jiawei; Liu, Xincai; Wang, Xinmin

doi:10.1007/s10854-021-05555-9

Cited by 16 publications

(2 citation statements)

References 30 publications

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“…The coatings with a shell-like structure on CIP magnetic cores [32] have advantages such as a low density, high specific surface area, and large pores. This structure can effectively reduce electromagnetic-absorption density, adjust dielectric constant, and improve impedance matching [33], demonstrating an excellent electromagnetic-absorption Coatings 2024, 14, 75 3 of 20 ability [34]. Carbon nanotubes (CNTs) have the characteristics of a wide electromagneticabsorption frequency, large specific surface area, light weight, and good electromagnetic shielding performance.…”

Section: Introductionmentioning

confidence: 99%

Effect of Blending of Shellac, Carbonyl Iron Powder, and Carbonyl Iron Powder/Carbon Nanotube Microcapsules on the Properties of Coatings

Zhu,

Li,

Xia

et al. 2024

Coatings

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Nine sets of orthogonal experimental samples were prepared by examining four factors: shellac microcapsules, carbonyl iron powder (CIP) microcapsules, CIP/ carbon nanotube (CNT) microcapsules, and primer coating thickness. By testing the morphology and performance of the coating and using the fracture elongation of the coating as an orthogonal experimental analysis, the maximum factor affecting the fracture elongation of shellac, CIP, and CIP/CNT microcapsule coatings was determined. The first two factors that had a significant impact on the fracture elongation of the coating were the content of CIP/CNT microcapsules and shellac microcapsules. In order to further optimize the coating performance, important factor experiments were conducted, using the content of CIP/CNT microcapsules and shellac microcapsules as variables. It was found that the coating had the best performance when the content of CIP/CNT microcapsules was 7.0% and the content of shellac microcapsules was 4.0%. The optical properties of coatings with added shellac, CIP, and CIP/CNT microcapsules were tested, and the color difference and glossiness of the coatings showed little change. The mechanical properties of coatings with added shellac, CIP, and CIP/CNT microcapsules were tested. The blending of the three types of microcapsules enhanced the toughness of the coating to a certain extent, and suppressed the generation of micro-cracks, demonstrating a good self-healing effect. The electromagnetic-absorption performance of coatings with added shellac, CIP, and CIP/CNT microcapsules was tested. The blending of shellac, CIP, and CIP/CNT microcapsules exhibited two effective bands of electromagnetic absorption and a good absorption performance at a relatively wide frequency range. The combination of shellac, CIP, and CIP/CNT microcapsules endows the fiberboard surface with self-healing and electromagnetic-absorption functions, while maintaining the original performance of the water-based coating. The results can be used for application of surface coatings on wooden materials with dual functions of self-healing and electromagnetic absorption.

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Section: Introductionmentioning

confidence: 99%

Effect of Blending of Shellac, Carbonyl Iron Powder, and Carbonyl Iron Powder/Carbon Nanotube Microcapsules on the Properties of Coatings

Zhu,

Li,

Xia

et al. 2024

Coatings

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“…Most importantly, organic resins are temperature‐instable, leading to the pulverization of bulk SMCs at temperature higher than 200 °C. [ 21 ] Therefore, new consolidation method is expected to fully unlock the application potential of SMCs.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Reaction Enhanced Liquid‐Phase Sintering of Metal/Oxide Soft Magnetic Composite

Bai

Liu

Bandaru

et al. 2023

Adv Funct Materials

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Soft magnetic composites (SMCs) are ungently demanded in high‐frequency power electronics for their large magnetization and high electrical resistivity. However, traditional cold‐pressed SMCs are faced with low mechanical strength and insulation instability, which severely restricts their applications. In this study, liquid‐phase sintering techniques to prepare FeSiAl/MoO3 SMCs are orginally employed, where consolidation and insulation of metallic magnetic particles are achieved in one step. The redox reaction between FeSiAl and MoO3 melt greatly reduces the interfacial energy, facilitates fully wetting of FeSiAl particles by MoO3 melt, and promotes the densification process during sintering. In the final FeSiAl/MoO3 SMC, FeSiAl particles are bonded covalently and insulated electrically/magnetically by the resultant Al2O3 transition layer, endowing the SMC with high crushing strength of 250 MPa, cut‐off frequency of 110 MHz, permeability of 35 (@1 MHz), and low power loss of 962 kW m−3 (5 MHz, 5 mT). This study provides alternative concept for designing new SMCs, and broadens the connotation and extension of liquid‐phase sintering.

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Improved Magnetic Properties of FeSiCr Soft Magnetic Composites by Adding Strontium Ferrite

Zhao

Kan

et al. 2022

J. Electron. Mater.

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The enhanced magnetic properties of FeSiCr powder cores composited with carbonyl iron powder

Cited by 16 publications

References 30 publications

Effect of Blending of Shellac, Carbonyl Iron Powder, and Carbonyl Iron Powder/Carbon Nanotube Microcapsules on the Properties of Coatings

Effect of Blending of Shellac, Carbonyl Iron Powder, and Carbonyl Iron Powder/Carbon Nanotube Microcapsules on the Properties of Coatings

Interfacial Reaction Enhanced Liquid‐Phase Sintering of Metal/Oxide Soft Magnetic Composite

Improved Magnetic Properties of FeSiCr Soft Magnetic Composites by Adding Strontium Ferrite

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