Wide Frequency Range AC Magnetic Properties of Fe-Based Composite Materials

P. Kollára, Z. Birčákováa, J. Füzera, J. Füzerováb, R. Burešc and M. Fáberovác aInstitute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 04154 Košice, Slovakia bDepartment of Applied Mathematics, Faculty of Mechanical Engineering, Technical University in Košice, 04200 Košice, Slovakia cInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia

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The aim of this work was to analyze the influence of resin content on contribution of the hysteresis, eddy current and anomalous losses to the total losses in the frequency range from DC to 150 kHz. The samples of composite material were prepared in the form: of the ring with outer diameter of 25 mm, inner diameter of 17 mm and height approximately 3 mm and in the form of cylinder with diameter of 25 mm and height approximately 3 mm by a compaction of mixture of iron powder ASC100.29 (90 vol.%) and commercial termoset resins. The DC hysteresis losses were obtained by the measurements of DC hysteresis loops and the total power losses in the frequency range 0.4 Hz-150 kHz from AC hysteresis loops, both at maximum induction 0.05, 0.1 and 0.2 T. The magnetic properties of the composite rings were compared with the properties of the material prepared from the powder supported by Höganäs AB Sweden. By analyzing the frequency dependence of total losses of the Fe-based SMC we found out that hysteresis losses contribute to the total losses as a majority component.

DOI: 10.12693/APhysPolA.118.759 PACS numbers: 81.05.Ni, 85.70.-w, 75.60.-d, 75.50.Bb