Softmagnetic composite materials polymer particles powder Co68Fe4Mo1Si13,5B13,5 alloy
Jarosław Konieczny*, Leszek A. Dobrzański*, Jerzy J. Wysłocki**, Anna Przybył** *Politechnika Śląska, Instytut Materiałów Inżynierskich i Biomedycznych, ul. Konarskiego 18A, 44-100 Gliwice **Politechnika Częstochowska, Wydział Inżynierii Procesowej, Materiałowej i Fizyki Stosowanej, Instytut Fizyki, al. Armii Krajowej 19, 42-200 Częstochowa
Quarterly No. 2, 2006 pages 81-84
DOI:
keywords: nanocomposites, nanocrystalline structure, magnetic properties
abstract Magnetic properties investigation results are presented in the paper of the SILAME® type nanocrystaline composite material. The composite material was fabricated by solidification of the nanocrystaline powder obtained in the high energy milling of the preliminarily crystallised Co68Fe4Mo1Si13.5B13.5 (Fig. 1) amorphous ribbon with the silicone polymer. The metallic powder was mixed with the silicone polymer in various volume contents and next the effect was studied of the volume contents of the Co68Fe4Mo1Si13.5B13.5 powder on the magnetic properties of the composites. Particles of the Co68Fe4Mo1Si13.5B13.5 powder are distributed evenly in the composite in the entire polymer matrix with the higher fraction of the reinforcement material in the composite; whereas, with the reduction of the powder fraction, local clusters of the metallic powder occur (Fig. 2). Composites with the silicone polymer matrix are characteristic of the increase of saturation induction BS and coercion field HC along with the increase of the volume contents of the Co68Fe4Mo1Si13.5B13.5 powder in the composite. The publication presents investigation results of the Co68Fe4Mo1Si13.5B13.5 nanocrystalline powder structure and of the SILAME® composite material, runs of the hysteresis loop (Fig. 3), magnetic susceptibility (Fig. 5), as well as of the permeability and lossiness of the composite (Table 1).