Properties and Applications of Soft Magnetic Powder Composites

Kordecki, A.; Węgliński, B.; Kaczmar, J. W.

doi:10.1179/pom.1982.25.4.201

Cited by 14 publications

(8 citation statements)

References 1 publication

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“…Specimens made of the powder with median particle size of 63 µm had the density equal to 7,18 ± 0,07 g/cm 3 , while, specimens made of powder with median particle size of 124 and 188 µm had densities equal to 7,30 ± 0,07 g/cm 3 and 7,32 ± 0,07 g/cm 3 , respectively. Therefore, this effect causes disturbances in the correct analysis of the hysteresis loss.…”

Section: Resultsmentioning

confidence: 99%

“…Note, however, that increasing the particle size leads consequently to an increase in eddy-current loss. Figure 5 and 6 depicts curves of power loss density P tot vs. frequency f for spiecimens with the same density of 7,18 ±0,07 g/cm 3 . The spiecimens were made of powder with the median particle size equal to 63 and 188 µm, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, powder metallurgy is characterized by low production costs, low powder waste and ease of recycling. There are two basic techniques for the preparation of magnetic elements made of powders: sintering and bonding by a dielectric agent [1][2][3]. Sintered parts have low resistivity; therefore, they are used only in devices with constant or low-frequency magnetic fields.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…As consequence, the maximum permeability value increases, since it is reported that the permeability is sensitive to the microstructure and thereby can be affected by the shape of the particles, density, porosity and strongly depends on the grain size [64,65]. It is well-known that addition of P increases the permeability while decreases the coercivity [66,67]. This, as suggested by the above magnetic results is due to the higher phosphorus concentration ~ 15 (wt.%) in the α-Fe(P) solid solution.…”

Section: Magnetic Propertiesmentioning

confidence: 98%

Dependence of Magnetic Properties with Structural/Microstructural Parameters of Ball-milled Fe15Co2P3 Powder Mixture

Berkani¹,

Siab²,

Tebib³

et al. 2021

Preprint

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This research work aims to investigate the mechanically alloyed Fe15Co2P3. Parametric Rietveld refinement method, of the obtained X-ray patterns, was performed for qualitative and quantitative phase analysis, structural, microstructural and mechanical properties. The ball-milled powder mixture crystallized within the face-centred cubic α-Fe(P) solid solution in equilibrium with Co75Fe25 phase. The crystallite size decreases reaching 100 and 200 nm respectively after 3h of milling. The highest values of the dislocation density, microstain and stored energy are registered for the α-Fe(P) solid solution. The studied mechanical properties manifest the brittle nature of the α-Fe(P) solid solution compared to the Co75Fe25 phase. The squareness ratio Mr/Ms and the coercivity values of the milled powders increase with increasing milling time and reach steady state after 2 h. The hysteresis loss energy and maximum permeability reach minimal values of 45*10− 4 W/m3 and 49*10− 3 H/m respectively, after 1 h of milling at the opposite of the switching field distribution.

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“…The large numbers of such phases between each magnetic powder particle cumulatively generate a large magnetic reluctance and low permeability. Indeed this is a well-known limitation of all dielectromagnetic soft magnetic composites [1,15,16] that must be circumvented through appropriate design [2,5,6].…”

Section: Magnetic Propertiesmentioning

confidence: 99%