Effects of the Addition of Permalloy Powder on the High-Frequency Magnetic Properties of Fe-Based Amorphous Powder Cores

Author

Kim, Yoon B. ; Kim, K.Y.

Author_Institution

Adv. Metals Res. Center, Korea Adv. Inst. of Sci. & Technol., Seoul

Volume

42

Issue

10

fYear

2006

Firstpage

2802

Lastpage

2804

Abstract

FeSiB amorphous powder was produced by gas atomization, and subsequently toroidal-shaped FeSiB amorphous powder cores were prepared by cold pressing, using permalloy powder as an additive. The characteristics of gas-atomized FeSiB amorphous powder and high-frequency magnetic properties of the cores were investigated. FeSiB amorphous powder, exhibiting good soft magnetic properties with a saturation magnetization of 125 emu/g and a coercivity of 0.4 Oe, was successfully produced by gas atomization in the particle size range below 75 mum. The addition of permalloy powder was effective for compaction of FeSiB amorphous powder cores by cold pressing. Permalloy powder increases the effective permeability of the cores but deteriorates the high-frequency dependence of the permeability at high content

Keywords

Permalloy; alloying additions; amorphous magnetic materials; boron alloys; ferromagnetic materials; iron alloys; magnetic permeability; particle size; powder cores; silicon alloys; soft magnetic materials; FeSiB; addition effect; amorphous powder cores; cold pressing; compaction; effective permeability; gas atomization; high-frequency magnetic properties; permalloy powder; saturation magnetization; soft magnetic properties; Additives; Amorphous materials; Coercive force; Compaction; Magnetic cores; Magnetic properties; Permeability; Powders; Pressing; Saturation magnetization; Cold pressing; FeSiB amorphous powder core; core loss; gas atomization; high-frequency characteristics;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.879884

Filename

1704444