Magnetic properties of iron-based soft magnetic composites prepared by utilizing polyimide insulating layer

Sun, Haishen; Zhang, Lin; Chen, Yan; Chen, Fangfang; Qu, Xuanhui; Xie, Congwei; Zhang, Lei

doi:10.1016/j.jmmm.2019.165287

Cited by 30 publications

(3 citation statements)

References 18 publications

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“…According to several previous studies, the hysteresis loss accounted for 70~90% of the power losses at 50 kHz [8][9][10]. Meanwhile when the insulation layers became thicker, the hysteresis loss will be gradually increased due to the improvement of coercivity [11,12]. This means that the researches of innovative insulation layers have no significant effect on reducing the core loss at medium and low frequency.…”

Section: Introductionmentioning

confidence: 99%

Fe-6.5 wt%Si Powder Cores with Low Core Loss by Optimizing Particle Size Distribution

Huang

Jiao²,

Yu³

et al. 2020

Metals

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The effect of different particle size distribution of Fe-6.5 wt%Si powder on the microstructure and soft magnetic properties of the corresponding soft magnetic powder cores (SMPCs) was investigated. By optimizing particle size distribution, the density of SMPCs increased and the total core loss significantly decreased. According to the result of loss separation, density of SMPCs is inversely proportional to hysteresis loss, while with increasing the content of the fine particles, the eddy current loss significantly decreased. It was found that with magnetic powder of particle size-grading as 10%, 10%, 60%, and 20% for particles with size between −75 to +38, −38 to +23, −23 to +13, and −13 μm, respectively, the Fe-6.5 wt%Si SMPCs exhibit optimal comprehensive magnetic performances with the effective permeability of about 60, the percent permeability at 100 Oe is up to 70%, and the lowest core loss of 553 mW/cm3.

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Section: Introductionmentioning

confidence: 99%

Fe-6.5 wt%Si Powder Cores with Low Core Loss by Optimizing Particle Size Distribution

Huang

Jiao²,

Yu³

et al. 2020

Metals

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“…Many attempts have been made to select insulating coating materials, which are mainly categorized as organic or inorganic. Polyimide, phenol, epoxy, parylene, silicone, and acrylic resins have been used as organic coating materials for SMPCs and amorphous ribbons [8][9][10][11][12][13][14][15][16][17][18][19]. The advantage of organic coatings is their good coating integrity, but their heat-resistant temperatures are limited, generally less than 500 • C. Amorphous ribbons require polymers with multiple functional properties such as high insulation, corrosion Polymers 2021, 13, 1350 2 of 10 resistance, increased sensitivity, and high-temperature resistance.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Magnetic Properties of FeSiAl Soft Magnetic Composites Prepared by Utilizing PSA as Resin Insulating Layer

et al. 2021

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Thermosetting organic resins are widely applied as insulating coatings for soft magnetic powder cores (SMPCs) because of their high electrical resistivity. However, their poor thermal stability and thermal decomposition lead to a decrease in electrical resistivity, thus limiting the annealing temperature of SMPCs. The large amount of internal stress generated by soft magnetic composites during pressing must be mitigated at high temperatures; therefore, it is especially important to find organic resins with excellent thermal stabilities. In this study, we prepared SMPCs using poly-silicon-containing arylacetylene resin, an organic resin resistant to high temperatures, as an insulating layer. With 2 wt % PSA as an insulating layer and annealed at 700 °C for 1 h, the FeSiAl SMPCs achieved the best magnetic properties, including the lowest core loss of 184 mW/cm3 (measured at 0.1 T and 50 kHz) and highest permeability of 96.

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“…Os produtos SMC apresentam melhor desempenho magnético para aplicações de médias e altas frequências, em oposição aos aços laminados e ferrites mais tradicionais, surgindo como alternativa no desenvolvimento de equipamentos mais eficientes energeticamente, com tendência a miniaturização e diminuição de peso e aumento de potência (SILVEYRA et al, 2018;SUN et al, 2019;HANEJKOB;TAHERIA, 2017;ZHOU YE;BJORN SKARMAN, 2012). Citam-se, por exemplo, dispositivos transformadores de tensão/corrente em fontes chaveadas, dispositivos de armazenamento de energia (indutores), nas telecomunicações, nos motores elétricos de corrente contínua (CC), entre outros.…”

Section: Introductionunclassified

Diminuição das Perdas Magnéticas em Materiais Magnéticos Macios (SMC) composto por partícula de ferro com fina camada de revestimento de fosfato e sua eficiência em motores elétricos quando aplicado a um campo magnético de baixa frequência. / Reduction of Magnetic Losses in Soft Magnetic Materials (SMC) composed of an iron particle with a thin layer of phosphate coating and its efficiency in electric motors when applied to a low frequency magnetic field.

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Schaeffer

2021

BASR

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Este trabalho apresenta o estudo das rotas de preparação de um compósito magnético macio (SMC), suas propriedades eletromagnéticas e eficiência quando aplicado a motores de indução (campos magnéticos de baixa frequência), como alternativa aos aços elétricos tradicionais. Assim, diferentes SMCs (como pó de ferro puro e pó de ferro ASC 100.29, ambos com revestimento e isolamento das partículas com ácido fosfórico) foram estudados em comparação com SMCs comercializados, como Somaloy® 700 3P. Além disso, metodologias de deposição da camada isolante, como deposição física, pulverização e processo Sol-Gel, também foram estudadas. Inicialmente, foram preparadas amostras comercial em pó e amostras com fina camada de fosfato. As partes sinterizadas desses SMCs foram então preparadas e, posteriormente, seus parâmetros eletromagnéticos foram adquiridos. A partir desses dados, foi feita uma análise do fluxo magnético nos motores construídos por esses materiais, na qual foi observado que a amostra do material compósito tinha propriedades compatíveis com os aços convencionais. Observou-se também que, com o aprimoramento das rotas de preparação do SMC, elas podem ser utilizadas no desenvolvimento de novas topologias de motores,

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Magnetic properties of iron-based soft magnetic composites prepared by utilizing polyimide insulating layer

Cited by 30 publications

References 18 publications

Fe-6.5 wt%Si Powder Cores with Low Core Loss by Optimizing Particle Size Distribution

Fe-6.5 wt%Si Powder Cores with Low Core Loss by Optimizing Particle Size Distribution

Enhanced Magnetic Properties of FeSiAl Soft Magnetic Composites Prepared by Utilizing PSA as Resin Insulating Layer

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