Effect of Si and Al content on core loss in Fe-Si-Al powder cores

Author

Yanagimoto, K. ; Majima, K. ; Sunada, S. ; Aikawa, Y.

Author_Institution

Metal Powder Manuf. & Sales Dept., Sanyo Special Steel Co. Ltd., Hyogo, Japan

Volume

40

Issue

3

fYear

2004

fDate

5/1/2004 12:00:00 AM

Firstpage

1691

Lastpage

1694

Abstract

We examined the effects of Si and Al content of Fe-Si-Al alloy powders with respect to the temperature dependence of core loss in order to find an optimum composition that achieves both negative temperature dependence of core loss and good permeability. By reducing the Si content from the 9.6 mass% of conventional Sendust alloy composition to 7.9-8.9 mass%, the temperature dependence of core loss became negative and maintained the high permeability of the Sendust powder core. The optimum composition was 8.8 mass% Si and 6.0 mass% Al, yielding a core loss value of 240 kW/m³ at 373 K, about half that of the conventional Sendust powder core.

Keywords

aluminium alloys; iron alloys; magnetic materials; materials testing; permeability; powder cores; silicon alloys; 373 K; Fe-Si-Al; Sendust alloy; Sendust powder core; alloy powders; core loss; high permeability; negative temperature dependence; powder cores; powdered magnetic materials; Aluminum alloys; Core loss; Ferrites; Magnetic cores; Magnetic materials; Permeability; Powders; Silicon alloys; Temperature dependence; Transformer cores; Iron alloys; losses; permeability; powdered magnetic materials;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.826623

Filename

1298946