Advances in Powder Metallurgy Soft Magnetic Composite Materials

  • R. Bureš, M. Strečková, M. Fáberová, P. Kollár, J. Füzer
  • Archives of Metallurgy and Materials, January 2017, De Gruyter
  • DOI: 10.1515/amm-2017-0168

Soft Magnetic Composites - from polymer bonded to iron to ferrite insulated FeSi

What is it about?

Industrial applications require to increase in permeability and magnetic flux density for higher performance and lower hysteresis losses, higher resistivity for lower Eddy current losses. Technical reality is that higher content of dielectric constituent in soft magnetic composite means lower higher resistivity and lower Eddy current losses, but higher hysteresis losses and lower saturation magnetization, It is possible to produce the excelent powder soft magnetic alloy in one hand, but it is hard problem with shaping and compaction of this powders on other hand. Magnetic, electrical and mechanical properties strongly depend on compaction process. Story of the compaction-microstructure-properties triangle in connection to powder soft magnetic composites is subject of this paper.

Why is it important?

Limitations of dielectric bond materials and parameters of compaction technology are disscussed. Overview of magnetic, electrical and mechanical properties of the selected polymer bonded, ceramic insulated and hybrid soft magnetic composites in dependence on compaction technology are presented.

Perspectives

Radovan Bures
Institute of Materials research of Slovak Academy of Sciences

It is small summary of the last 5 year research in the field of soft magnetic composites realized by research team of IMR SAS and UPJS Kosice as long term collaborators.

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http://dx.doi.org/10.1515/amm-2017-0168

The following have contributed to this page: Radovan Bures