Preparation and magnetic performance optimization of FeSiAl/Al2O3–MnO–Al2O3 soft magnetic composites with particle size adjustment

2021 ◽  
Author(s):  
Zigui Luo ◽  
Bo Feng ◽  
Dingya Chen ◽  
Zhenjia Yang ◽  
Shangwei Jiang ◽  
...  
Keyword(s):  
Particle Size ◽  
Performance Optimization ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Magnetic Performance ◽  
Soft Magnetic Composites ◽  
Size Adjustment

scholarly journals Hybrid Phosphate-Alumina Iron-Based Core-Shell Soft Magnetic Composites Fabricated by Sol-Gel Method and Ball Milling Method

Metals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 257
Author(s):  
Yifan Pan ◽  
Liwei Qian ◽  
Xiang Wang ◽  
Jingguang Peng ◽  
Wei Lu
Keyword(s):  
Ball Milling ◽  
Eddy Current ◽  
Loss Factor ◽  
Sol Gel ◽  
Core Loss ◽  
Eddy Current Loss ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Magnetic Performance ◽  
Soft Magnetic Composites

Novel Fe-based soft magnetic composites (SMCs) with hybrid phosphate-alumina layers were prepared by both sol–gel and ball-milling methods. The effects of the fabrication methods and the addition of Al2O3 particles on the microstructure and the soft magnetic performance of SMCs were studied. The formation of the hybrid phosphate-Al2O3 shell not only leads to the decrease of the total core loss, but also results in the reduction of the permeability and saturation magnetization. However, the degree of decrease caused by the different methods were not identical. The sample with 8% Al2O3 prepared by the sol–gel method showed the best magnetic performance, exhibiting a high-amplitude permeability (μa) of 85.14 and a low total core loss (Ps) of 202.3 W/kg at 50 mT and 100 kHz. The hysteresis loss factor and the eddy current loss factor were obtained by loss separation. The results showed that the samples with the same Al2O3 content prepared by different methods exhibited almost the same total core loss. However, the contribution of the hysteresis loss and the eddy current loss showed an obvious difference in behavior because of the change of the particle shapes and the refinement of the particle size during the ball-milling process.

scholarly journals Influence of manufacturing parameters on magnetic parameters of soft magnetic composites cores

2018 ◽  
Vol 69 (6) ◽  
pp. 442-444 ◽  
Author(s):  
Adam Jakubas ◽  
Mariusz Najgebauer
Keyword(s):  
Particle Size ◽  
Iron Particle ◽  
Molding Pressure ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Magnetic Parameters ◽  
Soft Magnetic Composites ◽  
Powder Composites ◽  
Manufacturing Parameters ◽  
Cylindrical Samples

Abstract The paper presents results of investigations of powder composites made of magnetically soft iron powder and dielectric - PVC - insulating and bonding molecules of this powder. The research was done on self-developed cylindrical samples. The study was aimed to determine the effect of molding pressure and the grain size of Fe on the magnetic properties of the samples. The studies have showed that an increase in core forming pressure obtaining higher induction B values at a lower H field intensity. It was also found that better parameters were obtained in the case of samples with a larger iron particle size.

scholarly journals Determination Of Power Loss In Fe-Based Soft Magnetic Composites

2015 ◽  
Vol 60 (2) ◽  
pp. 1411-1415 ◽  
Author(s):  
B. Jankowski ◽  
D. Kapelski ◽  
B. Ślusarek ◽  
J. Szczygłowski
Keyword(s):  
Particle Size ◽  
Magnetic Properties ◽  
Composite Materials ◽  
Particle Size Distribution ◽  
Power Loss ◽  
Particle Sizes ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Soft Magnetic Composites

Abstract 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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