Soft magnetic moldable composites: Properties and applications

Svensson, Leif; Frogner, Kenneth; Jeppsson, Peter; Cedell, Tord; Andersson, Mats

doi:10.1016/j.jmmm.2012.03.049

Cited by 70 publications

(20 citation statements)

References 4 publications

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“…Depending on the geometry, flux-concentrating material, type of workpiece, etc., the interaction will change; in the selected system, i.e., a full pitch travelling wave inductor made by litz wire with a soft magnetic moldable composite core [15], the effect is considerable. Figure 3(a) illustrates the coupling effect at a particular amplitude and frequency, with only one coil being excited.…”

Section: Travelling Wave Induction Heatingmentioning

confidence: 99%

Decoupling of Currents in Travelling Wave Induction Heating

Frogner¹,

Cedell²,

Andersson³

2014

JEMAA

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Travelling wave induction heating (TWIH) suffers from severe interference between the coils, which significantly reduces its efficiency. A strategy for decoupling the currents in TWIH is presented, based on the anti-series or anti-parallel connection of several inductors. The study investigates the coupling effect in terms of amplitude and phase shift as functions of current and frequency, respectively, including resonance behavior. In addition, the effects of deviations of the inductor properties are analyzed. Measurements indicate that the strategy produces very good results, almost eliminating the coupling effect, increasing the efficiency, and simplifying control. Simulated and measured results of the heating pattern are compared and efficiency values and power densities are presented.

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Section: Travelling Wave Induction Heatingmentioning

confidence: 99%

Decoupling of Currents in Travelling Wave Induction Heating

Frogner¹,

Cedell²,

Andersson³

2014

JEMAA

Self Cite

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“…Soft magnetics composites (SMCs) are promising substitutes for laminate steels in electromagnetic applications such as transformers, generators and motors [1] due to their core-shell structure [2] and unique properties including high magnetic saturation, high magnetic permeability, high resistivity, low core loss, high degree of productivity and three-dimensional (3D) isotropy [3][4][5]. Basically, the SMC cores are produced by traditional powder metallurgy techniques including mixing soft ferromagnetic powders with insulating materials and lubricants, compacting and pressing them to the desired shapes, as well as the subsequent annealing treatment [3,6] to relieve stress.…”

Section: Introductionmentioning

confidence: 99%

Effects of compaction and heat treatment on the soft magnetic properties of iron-based soft magnetic composites

Pan

Peng²,

Qian

et al. 2020

Mater. Res. Express

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Iron-based soft magnetic composites (SMCs) are promising substitutes for laminate steels in electromagnetic applications due to their excellent magnetic properties and productivity. However, the preparation process is a key factor in deciding the magnetic performance of SMCs. In this work, the Fe-based soft magnetic composites with improved soft magnetic properties were achieved by optimizing the compaction and the annealing process. Results showed that the core-shell structure of powders which would directly have an impact on the permeability and the core loss of the SMCs could be affected by the compaction and the annealing process. In addition, the magnetic properties were enhanced by tuning the microstructure. As a result, the optimal magnetic performance of the compact with high permeability and low total core loss was obtained. The real part of the permeability of the soft magnetic composites could reach a maximal value of 336.8 and a rather low core loss of 2.5 W Kg −1 (measured at 50 mT and 5 kHz). Therefore, soft magnetic composites with enhanced magnetic properties were obtained by optimizing the powder metallurgy (PM) process in this study.

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“…SMC are based on continuous insulating film between the ferromagnetic powder particles. Insulating film produces low total core loss, but it creates a non-conducting highly insulating boundary, thus preventing transfer of magnetic flux through adjacent powder particles [1][2][3]. Structure and properties of the interphase region among ferromagnetic particle is crucial for physical and mechanical properties of SMC.…”

Section: Introductionmentioning

confidence: 99%

Advances in Powder Metallurgy Soft Magnetic Composite Materials

Búreš¹,

Strečková²,

Fáberová³

et al. 2017

Archives of Metallurgy and Materials

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Powder metallurgy has grown with the expansion of various industry. Automotive industry had the most strong influence. Today, more than 90% of PM products are used in the transportation industry. Development of new materials such as magnetic materials is expected to meet the new trends of automotive industry, electric and hybrid vehicles.Soft magnetic composites (SMC) are PM materials based on ferromagnetic powder particles covered by electric insulation layer. Concept of SMC's and PM technologies offer possibility to become faster, use higher frequencies, become smaller and denser, save more energy, achieving high permeability and lower core loss in high frequency region, which is required for soft magnetic materials. Investigation of correlations among compaction parameters, inner structure, magnetic and mechanical properties are presented.

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Soft magnetic moldable composites: Properties and applications

Cited by 70 publications

References 4 publications

Decoupling of Currents in Travelling Wave Induction Heating

Decoupling of Currents in Travelling Wave Induction Heating

Effects of compaction and heat treatment on the soft magnetic properties of iron-based soft magnetic composites

Advances in Powder Metallurgy Soft Magnetic Composite Materials

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