Authors:
Ángel Sota Munoz (1,2) Nerea Burgos (1,2), Valentina Zhukova (3), Julián González (3), Mikel Osinalde (4), Jose Manuel Martín (1,2)
1- CEIT-Basque Research and Technology Alliance (BRTA), Donostia/San Sebastián, Spain
2- Universidad de Navarra, Tecnun, Donostia/San Sebastián, Spain
3- Department of Advanced Polymers and Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country, UPV/EHU, Donostia/San Sebastián, Spain
4- Elesa, Zarautz, Spain
Abstract:
Amorphous soft magnetic composites (SMCs) are characterised by low-volume fraction of magnetic material and therefore, poor magnetic permeability and saturation magnetisation. In this work, amorphous powder (Fe0.425 Co0.30 Si0.125 B0.15)96.5Nb3Cu0.5) is coated with 10 and 15 vol.% of resin and consolidated at high pressures (up to 2 GPa). Maximisation of particles packaging is obtained by mixing fractions of 0-10 µm and 20-45 µm in a volume ratio of 27:73 vol.%, respectively. Magnetic properties and power losses of SMCs made from 0-10 µm fraction and from the mixed fractions are compared. SMCs made from mixed fractions result in higher permeability but increased power losses. Low power losses (Pcv = 5850 mW/cm3 at f = 1 MHz, B = 50 mT), highest permeability (µ’ = 43.4) and highest saturation magnetisation (Ms = 0.82 T) are obtained with the SMC made from the mixed fractions after annealing and subsequent resin infiltration.
DOI:
https://doi.org/10.59499/EP246281383
