Amorphous soft magnetic composite-cores with various orientations of the powder-flakes

Zheng, Yue; Wang, Y.G.; Xia, G.T.

doi:10.1016/j.jmmm.2015.08.036

Cited by 38 publications

(4 citation statements)

References 21 publications

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“…Therefore, the core-loss densities of our SM 2 Cs made in this study are lower than that from a formulation in [22] and are comparable to those of commercial iron-powder cores. We believe that the magnetic properties of our SM 2 Cs can be further improved by aligning the flaky particles along the direction of magnetic flux through the use of either a mechanical shear force or an external magnetic field [31,32].…”

Section: Resultsmentioning

confidence: 99%

A (Permalloy + NiZn Ferrite) Moldable Magnetic Composite for Heterogeneous Integration of Power Electronics

et al. 2019

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Soft magnetic moldable composites (SM2Cs) would be ideally suited for the integration of magnetic components in power electronic converters because they can be formed into magnetic cores by low-temperature and pressure-less processing. However, most SM2Cs have low relative magnetic permeability, typically less than 30, and high core-loss densities at switching frequencies over 1 MHz. To improve their magnetic properties, we combine powders of Permalloy and a NiZn ferrite with an acrylic polymer to formulate a paste of SM2C. The paste can be molded and then cured below 200 °C without pressure to form cores with a relative permeability over 35 and a core-loss density at 1 MHz, 30% lower than those of commercial cores. The ease of its processing and high-performance properties makes the SM2C a good candidate material for the integration of power magnetics.

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Section: Resultsmentioning

confidence: 99%

A (Permalloy + NiZn Ferrite) Moldable Magnetic Composite for Heterogeneous Integration of Power Electronics

et al. 2019

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“…In the cross-section, it can be seen that the ball-milled particles are orderly arranged and exhibit a laminated structure. This laminated structure is beneficial for increasing the effective magnetic flux density and reducing the hysteresis loss [20].…”

Section: Morphologymentioning

confidence: 99%

Improved magnetic properties in amorphous FeSiBCr soft magnetic composites with easy-plane anisotropy for high-frequency applications

Huang¹,

Zhang²,

Shang³

et al. 2023

J. Phys. D: Appl. Phys.

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The miniaturization and high frequency of future electromagnetic devices require soft magnetic composites with high permeability, high working frequency and low core loss. In this work, easy-plane amorphous FeSiBCr powders with a thickness of approximately 1~2 μm are obtained by planetary ball milling and successfully fabricated into an arranged soft magnetic composite by using a rotational magnetic field. The complex permeability spectrums of the composite are measured and analyzed. Due to the planar distribution of easy magnetization axes, the amorphous easy-plane FeSiBCr/Si-resin composite shows a permeability of 31 at 1MHz. The core loss of samples is measured from 100 KHz to 5 MHz and discussed in detail. The loss separated results illustrate the eddy current loss and excess loss can be effectively reduced in amorphous easy-plane FeSiBCr/Si-resin composite. These results indicate that, compared with the amorphous none easy-plane FeSiBCr/Si-resin composite, the permeability of the amorphous easy-plane FeSiBCr/Si-resin composite is effectively improved and the core loss is reduced, making it promising for the high-frequency application.

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“…When the CIP content increased from 0% to 50% by weight, the relative density increased from 75.9% to 84.9% and the magnetic permeability of the sample heat-treated at 500 °C rose from 19.1% to 36.8%, i.e., by 92.7%. As the iron carbonyl content increased, the rate of increase in the composite density decreased gradually [ 14 , 15 , 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Modification of the Properties of Polymer Composites in a Constant Magnetic Field Environment

et al. 2021

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In this paper, polymer composites based on polylactide (PLA) and epoxy resin (Epidian 5) were studied in terms of the influence of magnetic induction on their changes in physicochemical properties. The composites contained admixtures in the form of magnetite (Fe3O4) and crystalline cellulose (Avicel PH-1010) in the amount of 10%, 20%, and 30% by weight and starch in the amount of 10%. The admixtures of cellulose and starch were intended to result in the composites becoming biodegradable biopolymers to some extent. Changes in physical and chemical properties due to the impact of a constant magnetic field with a magnetic induction value B = 0.5 T were observed. The changes were observed during tests of tensile strength, bending, impact strength, water absorbency, frost resistance, chemical resistance to acids and bases, as well as through SEM microscopy and with studies of the composition of the composites that use the EDS method and of their structure with the XRD method. Based on the obtained results, it was found that the magnetic induction value changes the properties of composites. This therefore acts as one method of receiving new alternative materials, the degradation of which in the environment would take far less time.

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Amorphous soft magnetic composite-cores with various orientations of the powder-flakes

Cited by 38 publications

References 21 publications

A (Permalloy + NiZn Ferrite) Moldable Magnetic Composite for Heterogeneous Integration of Power Electronics

A (Permalloy + NiZn Ferrite) Moldable Magnetic Composite for Heterogeneous Integration of Power Electronics

Improved magnetic properties in amorphous FeSiBCr soft magnetic composites with easy-plane anisotropy for high-frequency applications

Modification of the Properties of Polymer Composites in a Constant Magnetic Field Environment

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