Core loss reduction for Fe-6.5wt%Si soft magnetic composites doped with Co element

Wang, Jian; Liu, Xin; Lei, Chao; Mao, Xinhua; Liu, Danhua; Fan, Xiaoliang; Luo, Zigui; Luo, Fan

doi:10.1016/j.jmmm.2020.166553

Cited by 38 publications

(9 citation statements)

References 30 publications

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“…eq values of Fe and Cr at a given temperature, only oxidation of Cr and Si occurs, while Fe is reduced. The dotted lines on the Ellingham diagram represented the partial pressure ratio values (p H 2 g ð Þ =p H 2 O g ð Þ ) denoting 0.1, 1, 10, 10 2 , 10 6 , 10 10 . The ΔG 0 of each element were obtained from the Thermo-Calc software and their values for Fe, Si, and Cr at 650 °C were À426.2, À744.2, and À597.5 kJ mol À1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

“…ΔG value is 0 in the equilibrium state and by substituting Equation (3,9) can be rearranged as (10).…”

Section: Thermodynamic Calculation For Selective Oxidation Heat Treat...mentioning

confidence: 99%

“…[ 5,6 ] In SMCs, iron powders alloyed with Ni, Si, and Co are used as soft magnetic powders to obtain improved permeability, flux density, and resistivity. [ 7–10 ] Among the various alloys used in SMCs, a Fe–Si–Cr alloy has been widely used because it has high resistivity and insulation impedance characteristics, thus leading to relatively low core loss and high reliability at high powers. [ 11,12 ] With the increasing demand for high‐performance components, new magnetic materials are highly recommended to obtain low core loss at high frequency because this characteristic becomes critical.…”

Section: Introductionmentioning

confidence: 99%

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Study on Surface Modification of Fe–Si–Cr Alloy by Selective Oxidation Heat Treatment and its Corrosion Properties

Park

Hwang

Seo

et al. 2022

steel research int.

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Section: Resultsmentioning

confidence: 99%

“…ΔG value is 0 in the equilibrium state and by substituting Equation (3,9) can be rearranged as (10).…”

Section: Thermodynamic Calculation For Selective Oxidation Heat Treat...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study on Surface Modification of Fe–Si–Cr Alloy by Selective Oxidation Heat Treatment and its Corrosion Properties

Park

Hwang

Seo

et al. 2022

steel research int.

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“…Density (g/cm 3 ) µ e @ 100 kHz DC-Bias @ 100 Oe Core Loss * (mW/cm 3 ) Fe-6.5%Si [15] 6.918 103.36 -781.03 Fe-6.5%Si [14] 5.91 52.9 56% -Fe-6.5%Si [8] 5.…”

Section: Samplesmentioning

confidence: 99%

“…The hysteresis loss strongly depends on the coercivity of the alloy and the density of SMPCs [5,8,13]. Several researchers have tried to reduce the coercivity of the Fe-6.5 wt%Si alloy by doping Ti and Co [14,15]. Doping moderate specific elements may improve the internal microstructure of Fe-6.5 wt%Si alloy to reduce the coercivity.…”

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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Correlation Between Structural Features and Magnetic Performance of Fe_93.5Si_6.5 (wt.%) Soft Magnetic Materials

Yang,

Fu,

Wahl

et al. 2023

Adv Funct Materials

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Laminated, powder filled, and dense bulk soft magnets are currently used for various electrical and electronic applications due to their characteristic magnetic properties. In order to systematically investigate the correlation between the structural features and the resulting magnetic performance of various soft magnetic materials, toroidal Fe93.5Si6.5 (wt.%) specimens with “layer structure”, “powder structure”, and “dense structure” are additively manufactured and characterized by means of electron beam powder bed fusion (PBF‐EB). The specimens with “layer structure” show outstanding magnetic performance in terms of low power losses and good maximum magnetic flux density at frequencies ranging from 50 to 1000 Hz, outperforming even some soft magnetic materials fabricated using conventional methods. Fe93.5Si6.5 (wt.%) specimens with various layered structures are produced using different processing strategies, allowing for sophisticated structural tailoring, and modifying the corresponding magnetic performance. Based on the results derived in this study, an ideal structure that can result in superior soft magnetic properties is proposed.

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Core loss reduction for Fe-6.5wt%Si soft magnetic composites doped with Co element

Cited by 38 publications

References 30 publications

Study on Surface Modification of Fe–Si–Cr Alloy by Selective Oxidation Heat Treatment and its Corrosion Properties

Study on Surface Modification of Fe–Si–Cr Alloy by Selective Oxidation Heat Treatment and its Corrosion Properties

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

Correlation Between Structural Features and Magnetic Performance of Fe_93.5Si_6.5 (wt.%) Soft Magnetic Materials

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Core loss reduction for Fe-6.5wt%Si soft magnetic composites doped with Co element

Cited by 38 publications

References 30 publications

Study on Surface Modification of Fe–Si–Cr Alloy by Selective Oxidation Heat Treatment and its Corrosion Properties

Study on Surface Modification of Fe–Si–Cr Alloy by Selective Oxidation Heat Treatment and its Corrosion Properties

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

Correlation Between Structural Features and Magnetic Performance of Fe93.5Si6.5 (wt.%) Soft Magnetic Materials

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Product

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Correlation Between Structural Features and Magnetic Performance of Fe_93.5Si_6.5 (wt.%) Soft Magnetic Materials