Design of novel soft magnetic composites based on Fe/resin modified with silica

Strečková, M.; Medvecký, Ľubomír; Füzer, J.; Kollář, P.; Búreš, Radovan; Fáberová, Mária

doi:10.1016/j.matlet.2013.03.067

Cited by 57 publications

(17 citation statements)

References 6 publications

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“…Basic PFR was modified by 3-glycidoxypropyltrimethoxysilane (GLYMO, 98% Aldrich) and tetraethylortho-silicate (TEOS, 99%, Merck) to prepare hybrid silica modified resin referred as PFRGT. PFRGT were prepared according to the procedure described in our previous work [8]. Another hybrid organic-inorganic resin was prepared using modification of PFR by boric acid (99.5% Lachema) and it is referred as PFRB.…”

Section: Experimental -Polymer Bonded Smcmentioning

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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Section: Experimental -Polymer Bonded Smcmentioning

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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“…The chemical synthesis of pure phenol-formaldehyde resin (PFR) and hybrid phenol-formaldehyde resin (PFRGT) modified with silica using GLYMO and TEOS were carried out according to the procedure thoroughly described in our previous work [12]. The new hybrid resin PFRB modified with boron was synthesized by the analogous sol-gel process with exception that H 3 BO 3 was used as a source of boron additionally incorporated into the polymer matrix.…”

Section: Composite Preparationmentioning

confidence: 99%

“…The insulation coating may have organic or inorganic character [8][9][10][11]. The advantages of organic binders lie in the smart preparation of composites, high density of final green compacts and thermally undemanding curing process [12]. However, it has been demonstrated in our previous works that the thermosetting resins of hybrid organic-inorganic character are quite superior with respect to the pure organic binders because the chemical incorporation of appropriate inorganic additives into polymeric structure substantially improves mechanical properties of the final composites [13,14].…”

Section: Introductionmentioning

confidence: 99%

A comparison of soft magnetic composites designed from different ferromagnetic powders and phenolic resins

Strečková

Búreš

Fáberová

et al. 2015

Chinese Journal of Chemical Engineering

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“…Their structure leads to a signicant reduction of the eddy current loss contribution, which become important at high frequencies [1][2][3][4]. In this paper we present results on the magnetic losses and complex permeability and their frequency dependence in FeSi powder in two granulometric fractions.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Properties of Soft Magnetic FeSi Composite Powder Cores

et al. 2014

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Soft magnetic composites (SMCs), which are used in electromagnetic applications, can be described as ferromagnetic powder particles surrounded by an electrical insulating lm. These composite materials oer several advantages over traditional laminated steel cores such as reduction in weight and size. They have some unique properties, including three-dimensional isotropic ferromagnetic behaviour, very low eddy current loss, relatively low total core loss at medium and high frequencies, high electrical resistivity and good relative magnetic permeability. FeSi powder was used as a base ferromagnetic material for preparation of soft magnetic composites. The commercial FeSi particles of a precise spherical shape were prepared in two granulometric fractions (up to 150 µm or up to 356 µm). The phenol-formaldehyde resin modied by SiO2 nanoparticles was used as an electroinsulating layer. The FeSi particles covered by the synthesized resin were compacted at 800 MPa into the ring samples for magnetic measurements. The nal samples were treated thermally under the curing schedule, which was suggested according to thermal degradation of the modied resin.

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Design of novel soft magnetic composites based on Fe/resin modified with silica

Cited by 57 publications

References 6 publications

Advances in Powder Metallurgy Soft Magnetic Composite Materials

Advances in Powder Metallurgy Soft Magnetic Composite Materials

A comparison of soft magnetic composites designed from different ferromagnetic powders and phenolic resins

Magnetic Properties of Soft Magnetic FeSi Composite Powder Cores

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