The development of a Fe74Si11B14Ni1 soft magnetic powder used for SMC materials

Soft magnetic composites (SMCs) are produced by compressing together soft magnetic powders and a binding insulator material. In some applications these composites are able to replace electrical steel sheets or ferrites. Here we report on the development of an SMC produced from Fe74Si11B14Ni1 alloy p...

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Bibliographic Details
Published in:Surface and interface analysis 2004-08, Vol.36 (8), p.917-920
Main Authors: Godec, M., Remškar, M., Mandrino, Dj, Šuštaršič, B., Jenko, M.
Format: Article
Language:English
Subjects:
amorphous
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
FeSiB
nanocrystalline
Physics
powder
SMC
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Summary:Soft magnetic composites (SMCs) are produced by compressing together soft magnetic powders and a binding insulator material. In some applications these composites are able to replace electrical steel sheets or ferrites. Here we report on the development of an SMC produced from Fe74Si11B14Ni1 alloy powder and a binding epoxy insulator. The Fe74Si11B14Ni1 powder was prepared by water atomization. The surfaces and the microstructures of the amorphous and nanocrystalline powders were investigated by x‐ray photoelectron spectroscopy (XPS), x‐ray diffraction (XRD), scanning electron microscopy (SEM) and high‐resolution transmission electron microscopy (HRTEM). It was found that most of the water‐atomized Fe74Si11B14Ni1 alloy powder particles that were smaller than 40 µm had an amorphous structure with small, isolated nanocrystalline grains. During annealing a completely nanocrystalline structure was obtained. Copyright © 2004 John Wiley & Sons, Ltd.
ISSN:0142-2421
1096-9918
DOI:10.1002/sia.1799