Hybrid Nd–Fe–B/barium ferrite magnetic materials with epoxy matrix

0425418 - ÚFM 2014 RIV RS eng J - Journal Article
Stajčić, A. - Stajić-Trošić, J. - Grujić, A. - Stijepović, M. - Lazić, N. - Žák, Tomáš - Aleksić, R.
Hybrid Nd–Fe–B/barium ferrite magnetic materials with epoxy matrix.
Hemijska industrija. Roč. 66, č. 3 (2012), s. 301-308. ISSN 0367-598X. E-ISSN 2217-7426
Institutional research plan: CEZ:AV0Z2041904
Institutional support: RVO:68081723
Keywords : Nd-Fe-B * composites * bonded magnets * DMA * VSM
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 0.463, year: 2012

Lately, there has been great attention paid to the research of bonded hybrid composites with improved dynamic mechanical capacities capable of replacing bonded Nd-Fe-B magnetic materials, by using cheaper (ferrite) materials instead of the Nd–Fe–B powder while retaining the satisfying values of the maximum magnetic energy. The objective of this study is to assess how different contents of Nd–Fe–B and/or barium ferrite particles can affect morphological, dynamic mechanical and magnetic properties of bonded composite materials. The interactions between employed magnetic powders and the interactions between magnetic powders and polymer binder are considered. For the examination of the magnetic behaviour, a vibrating sample magnetometer (VSM) is used. Different shapes and sizes of the obtained hysteresis loops are used for comparison and prediction of the polymer bonded materials properties. The homogeneous distribution of the magnetic particles in the polymer matrix is validated using scanning electron microscopy (SEM). The elastic and damping behavior examined by dynamic mechanical analysis (DMA) show improved properties for hybrid composite materials.
Permanent Link: http://hdl.handle.net/11104/0231562