Magnetic properties of selected Fe-based soft magnetic composites interpreted in terms of Jiles-Atherton model parameters

2020 ◽  
Vol 502 ◽  
pp. 166514 ◽  
Author(s):  
Zuzana Birčáková ◽  
Peter Kollár ◽  
Ján Füzer ◽  
Radovan Bureš ◽  
Mária Fáberová
Keyword(s):  
Magnetic Properties ◽  
Model Parameters ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Soft Magnetic Composites

Annealing effects on magnetic properties and strength of organic-silicon epoxy resin-coated soft magnetic composites

2013 ◽  
Vol 228 (12) ◽  
pp. 2049-2058 ◽  
Author(s):  
Ling Xiao ◽  
Yanhua Sun ◽  
Chunhua Ding ◽  
Lihua Yang ◽  
Lie Yu
Keyword(s):  
Magnetic Properties ◽  
Epoxy Resin ◽  
Strength Analysis ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Coating Materials ◽  
Maximum Heat ◽  
Iron Powders ◽  
Organic Silicon ◽  
Soft Magnetic Composites

Soft magnetic composites (SMCs) can be described as soft magnetic powders covered by electrically insulating layers. In this work, iron powders with high purity and organic-silicon epoxy resin were chosen for good magnetic properties, thermal stability, and mechanical properties, respectively. The effect of amount of resin, different annealing temperatures on the microstructure, and performance of SMCs was investigated. Results show that organic-silicon epoxy resin has excellent properties as dielectric coating materials for coating iron powders and maximum heat-resistant temperature is about 400 ℃. According to magnetic properties and flexural strength analysis, the optimum annealing temperature of organic-silicon epoxy resin-coated composite is 200 ℃. Furthermore, the finite element analysis indicates that the strength of the whole composites is related to the adhesion of resin and iron and the strength of resin itself.

Magnetic properties and loss separation in FeSi/MnZnFe2O4 soft magnetic composites

2016 ◽  
Vol 411 ◽  
pp. 12-17 ◽  
Author(s):  
M. Lauda ◽  
J. Füzer ◽  
P. Kollár ◽  
M. Strečková ◽  
R. Bureš ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Soft Magnetic Composites

Research on Preparation and Properties of Fe-Si-Al Soft Magnetic Composites

2011 ◽  
Vol 298 ◽  
pp. 173-178 ◽  
Author(s):  
Qing Da Li ◽  
X.W. Dong ◽  
T.X. Liu ◽  
Jun Hua You ◽  
Fa Zeng Lian
Keyword(s):  
Magnetic Properties ◽  
Effective Permeability ◽  
Annealing Temperature ◽  
Total Loss ◽  
Magnetic Powder ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Crushing Strength ◽  
Soft Magnetic Composites ◽  
Magnetic Powder Core

The Fe-Si-Al soft magnetic composites were produced by cold pressing of water-atomized Fe-Si-Al powder using organic binder. The effect of shaping pressure, annealing temperature, magnetic annealing and dielectric content on properties of Fe-Si-Al soft magnetic composites was investigated. The results showed that increasing shaping pressure increases density and radial crushing strength of Fe-Si-Al soft magnetic cores, and decreases coercivity and total loss. Increasing annealing temperature can increase effective permeability and decrease total loss owing to decreasing hysteresis loss, and over-annealing (＞660°C) can deteriorate magnetic properties. The magnetic annealing can decrease total loss of Fe-Si-Al magnetic powder core. Increasing dielectric content can reduce the eddy current loss of Fe-Si-Al magnetic powder core and decrease the real part of permeability. Fe-Si-Al magnetic powder core with shaping pressure of 1800 MPa, annealing temperature of 660 °C and dielelctric content of 0.7% presented the optimum magnetic properties with an effective permeability of 127, a total loss of 78mW/cm3 and a radial crushing strength of 18MPa.

Influence of cryogenic temperature on magnetic properties of soft magnetic composites

2014 ◽  
Vol 57 (2) ◽  
pp. 155-160 ◽  
Author(s):  
B. Jankowski ◽  
D. Kapelski ◽  
M. Karbowiak ◽  
M. Przybylski ◽  
B. Ślusarek
Keyword(s):  
Magnetic Properties ◽  
Cryogenic Temperature ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Soft Magnetic Composites

Microstructure and magnetic properties of Fe–6.5 wt.% Si/MnZn(Fe2O4)2 composites with core-shell structure prepared by spark plasma sintering

2017 ◽  
Vol 31 (16-19) ◽  
pp. 1744013 ◽  
Author(s):  
Liang Yan ◽  
Biao Yan
Keyword(s):  
Magnetic Properties ◽  
Shell Structure ◽  
Core Shell ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Plasma Sintering ◽  
Soft Magnetic Composites ◽  
Spark Plasma ◽  
Core Shell Structure ◽  
Microstructure And Magnetic Properties

Fe–6.5 wt.% Si powder coated with 10 wt.% MnZn(Fe2O4)2 (MnZn ferrite) was successfully prepared by using dry-type stirring ball milling. The Fe–6.5 wt.% Si/MnZn(Fe2O4)2 soft magnetic composites were prepared by subsequent spark plasma sintering. This paper aims at analyzing the microstructure and magnetic properties of Fe–6.5 wt.% Si/MnZn(Fe2O4)2 soft magnetic composites (sintering temperature: 750[Formula: see text]C, sintering pressure: 50 MPa, holding time: 8 min, heating rate: 60 K/min). Based on X-ray diffraction and scanning electron microscopy, microstructure and powder morphology were examined and magnetic measurements on bulk samples were conducted by vibrating sample magnetometer and impedance analyzer. According to the experiments results, Fe–6.5 wt.% Si/MnZn(Fe2O4)2 composites displayed a core-shell structure, and ceramic phase was observed after sintering. The Fe–6.5 wt.% Si/MnZn(Fe2O4)2 composites achieved high resistivity ([Formula: see text] m[Formula: see text]/cm) while maintaining excellent magnetic properties ([Formula: see text] emu/g). Core losses especially at medium and high frequencies were significantly reduced.

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