Improved permeability of Fe based amorphous magnetic powder cores by adding Permalloy

•Addition micro size Permalloy into non-magnetic gap can improve the permeability.•A certain content of Permalloy can maximize permeability and reduce core loss.•There is an optimal range of coating content to increase the permeability.•The permeability of the cores increases by 59.6% and core loss...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2017-09, Vol.438, p.138-143
Main Authors: Li, B., Zheng, Z.G., Yu, H.Y., Zeng, D.C.
Format: Article
Language:English
Subjects:
Core loss
Fe based amorphous
Ferromagnetism
Ferrous alloys
High permeability
Insulation
Low core loss
Magnetic permeability
Magnetic properties
Magnetic saturation
Metal particles
Permalloy
Permeability
Studies
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Summary:•Addition micro size Permalloy into non-magnetic gap can improve the permeability.•A certain content of Permalloy can maximize permeability and reduce core loss.•There is an optimal range of coating content to increase the permeability.•The permeability of the cores increases by 59.6% and core loss is 57W/kg. This paper focuses on improving the permeability of Fe-Si-B based amorphous magnetic powder cores by addition of micron-sized ferromagnetic crystalline metal particles (Permalloy). The effects of Permalloy content, size and the amount of insulation on magnetic properties and density were investigated. The results showed that the Fe based amorphous powder cores prepared with 15wt.% Permalloy (
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2017.04.082