Power loss separation in Fe-based composite materials

Kollář, P.; Birčáková, Zuzana; Füzer, J.; Búreš, Radovan; Fáberová, Mária

doi:10.1016/j.jmmm.2012.09.055

Cited by 245 publications

(44 citation statements)

References 17 publications

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“…1. The dependencies are not linear, which means that numbers of moving domain walls are not constant [7]. We see that with the increasing VPM content the energy losses increase, but the sample with the highest VPM fraction (50%) exhibits lower losses than samples with 20 and 30% (in spite of higher porosity Tab.…”

Section: Resultsmentioning

confidence: 83%

“…The dc losses W dc are represented as the area of dc hysteresis loop, the classical losses W c are caused by the eddy currents induced by changing magnetic ux, and the excess losses W exc are related mainly to number of moving domain walls during the magnetization process [7,8]. We distinguish intra-particle (for insulated particles) and inter-particle (for non-perfect insulated particles) eddy currents.…”

Section: Resultsmentioning

confidence: 99%

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Influence of Vitroperm Content on the Energy Losses in Composite Materials Based on the Mixture of Two Ferromagnets

et al. 2014

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Soft magnetic composites oer several advantages such as 3D isotropic magnetic properties and relatively small energy losses, nding use in electrical devices like electromotors, transformers or sensors. The aim of this work was to investigate the dc and ac magnetic properties of composites based on the mixture of two dierent ferromagnets: iron based material Somaloy R 700 and Vitroperm R 500 alloy. The analysis of total losses into dc losses, classical losses and excess losses showed that the classical and excess losses were negligibly small. The specic resistivity was increasing with the increasing fraction of Vitroperm (VPM). The coercivity exhibited maximum at 20% of VPM.

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Influence of Vitroperm Content on the Energy Losses in Composite Materials Based on the Mixture of Two Ferromagnets

et al. 2014

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“…2. We can observe that the dependences are not linear, which means that numbers of moving domain walls are not constant with frequency [11].…”

Section: Resultsmentioning

confidence: 90%

Influence of Vitrovac Content on Magnetic Properties in Composite Materials Based on the Mixture of Two Ferromagnets

et al. 2017

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Soft magnetic composite materials play an important role in nowadays industry, replacing the traditional materials such as electrical steels and soft ferrites, especially at medium and higher frequency applications. The material can be tailored for a specific application by changing the composition of the material and by adaptation of the fabrication process. The aim of this work was to investigate the morphology, phase composition and magnetic properties of soft magnetic composite materials with various magnetic content to minimize the total magnetic losses. The prepared sample series was based on the mixture of two different ferromagnets Vitrovac 6155 and Somaloy 700 without addition of insulating material. The samples were prepared by conventional powder metallurgy with particular fraction of Vitrovac in the form of a ring for magnetic measurements in AC fields and electric resistivity measurements. The samples with 5 wt% and 20 wt% fractions of Vitrovac exhibit lower values of total losses in comparison with Somaloy heat treated at 530• C.

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“…Eddy current loss are caused by an alternating magnetic field. In the case of soft magnetic composites there are two different paths for eddy current: only inside particles (intra-particles eddy current loss) and currents between neighboring particles (inter-particles eddy current loss) [8]. In turn excess loss are caused mainly by domain wall branching and bowing.…”

Section: Loss Determinationmentioning

confidence: 99%

Determination Of Power Loss In Fe-Based Soft Magnetic Composites

Jankowski¹,

Kapelski²,

Ślusarek³

et al. 2015

Archives of Metallurgy and Materials

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The magnetic properties of Fe-based composite materials with different particle sizes were investigated. The results of energy loss density were obtained from measurements of the static (DC) hysteresis cycles ranging from 0,2 to 1,4 T. In turn, the results of power loss density were obtained from measurements of the dynamic (AC) hysteresis cycles ranging from 20 to 400 Hz and at the maximum flux density 0,3; 0,9 and 1,3 T. Two sets of specimens was analyzed in the investigation: the specimens compacted under pressure of 800 MPa and hardened at 500• C and the specimens compacted under different pressure and hardened at 500• C. Specimens of the second set had the same density. The study confirmed the influence of particle size distribution on magnetic properties of Fe-based soft magnetic composites.

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Power loss separation in Fe-based composite materials

Cited by 245 publications

References 17 publications

Influence of Vitroperm Content on the Energy Losses in Composite Materials Based on the Mixture of Two Ferromagnets

Influence of Vitroperm Content on the Energy Losses in Composite Materials Based on the Mixture of Two Ferromagnets

Influence of Vitrovac Content on Magnetic Properties in Composite Materials Based on the Mixture of Two Ferromagnets

Determination Of Power Loss In Fe-Based Soft Magnetic Composites

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