Effect of the particle size classification of FeSiCrB amorphous soft magnetic composites to improve magnetic properties of power inductors

Author(s):  
Hyuk Jun Woo ◽  
Ji Hun Ahn ◽  
Choongnyun Paul Kim ◽  
Dong Hyeok Choi ◽  
Sumin Kim ◽  
...  
2015 ◽  
Vol 60 (2) ◽  
pp. 1411-1415 ◽  
Author(s):  
B. Jankowski ◽  
D. Kapelski ◽  
B. Ślusarek ◽  
J. Szczygłowski

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.


Author(s):  
Ling Xiao ◽  
Yanhua Sun ◽  
Chunhua Ding ◽  
Lihua Yang ◽  
Lie Yu

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.


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

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