<trans-title xml:lang="en">Fe/Submicron FeNi Soft Magnetic Composites with High Working Frequency and Low Loss</trans-title>

Sizhe HE; Junzhou WANG; Yong ZHANG; Jiawei FEI; Aimin WU; Yifeng CHEN; Qiang LI; Sheng ZHOU; Hao HUANG

doi:10.15541/jim20230599

Journal of Inorganic Materials, Volume. 39, Issue 8, 871(2024)

Fe/Submicron FeNi Soft Magnetic Composites with High Working Frequency and Low Loss

Sizhe HE1... Junzhou WANG1, Yong ZHANG1, Jiawei FEI1, Aimin WU1, Yifeng CHEN2, Qiang LI2, Sheng ZHOU3 and Hao HUANG1,* |Show fewer author(s)

Author Affiliations

¹1. Key Laboratory of Energy Materials and Devices (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China

²2. Guangdong Fenghua Advanced Technology Holding Co., Ltd., Zhaoqing 526199, China

³3. Mingxin Soft Magnetic Technology (Jiangsu) Co., Ltd., Kunshan 215300, China

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Figures & Tables(11)

1. Schematic diagram of microstructure model of SMC

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2. XRD patterns of carbonyl iron powder (CIP) and submicron FeNi particles

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3. SEM images of two powders

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4. Hysteresis loops of CIP and submicron FeNi particles Inset: enlarged view of the part within the orange box

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5. Eddy current distribution and current density |J| in SMC microstructure at 1 and 100 MHz

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6. Cross-section SEM images of SMCs with different contents of submicron FeNi particles

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7. Compaction density of SMCs with different contents of FeNi submicron particles

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8. Complex permeability of SMCs with different contents of submicron FeNi particles

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9. Structure and performance of molded inductor

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Table 1. Material properties of SMC model
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Table 1. Material properties of SMC model
Material Conductivity/(S·m^-1) Relative permeability Relative permittivity
Iron 1.12×10⁷ 4000 1
FeNi alloy 1.70×10⁶ 8000 1
Matrix 0.1 1 9

Table 2. Particle size distributions of CIP and submicron FeNi particles
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Table 2. Particle size distributions of CIP and submicron FeNi particles
Material d₁₀/μm d₅₀/μm d₉₀/μm d_ave/μm
Carbonyl iron powder 2.6 3.7 4.9 3.9
Submicron FeNi powder 0.390 0.668 0.980 0.645

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Sizhe HE, Junzhou WANG, Yong ZHANG, Jiawei FEI, Aimin WU, Yifeng CHEN, Qiang LI, Sheng ZHOU, Hao HUANG. Fe/Submicron FeNi Soft Magnetic Composites with High Working Frequency and Low Loss[J]. Journal of Inorganic Materials, 2024, 39(8): 871

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