Title:
SOFT MAGNETIC METAL POWDER
Document Type and Number:
WIPO Patent Application WO/2022/186226
Kind Code:
A1
Abstract:
[Problem] To provide soft magnetic metal powder which comprises fine particles which can be used to produce a high-density powder compact, and from which not only a powder magnetic core having excellent magnetic characteristics can be produced because of a small content of boron used for reduction of saturation magnetization, but also a thin film having excellent surface smoothness can be formed because the powder is an aggregation of fine particles having a narrow particle size distribution. [Solution] Soft magnetic metal powder having an average particle diameter of 0.05 µm to 1.5 µm, a change coefficient of 0.25 or less as expressed by the (Expression) given below, and a boron content of less than 5.0 Wt% (provided that 0 is excluded). (Expression): Standard deviation of particle diameter/average particle diameter
Inventors:
HORIE SHINJI (JP)
ISHITANI SEIJI (JP)
IZAWA TAKUMI (JP)
ISHITANI SEIJI (JP)
IZAWA TAKUMI (JP)
Application Number:
PCT/JP2022/008676
Publication Date:
September 09, 2022
Filing Date:
March 01, 2022
Export Citation:
Assignee:
TODA KOGYO CORP (JP)
International Classes:
B22F9/24; B22F1/00; B22F1/16; C22C38/00; H01F1/20; H01F1/33
Foreign References:
| JP2010261065A | 2010-11-18 | |||
| JP2014074222A | 2014-04-24 | |||
| JP2007036183A | 2007-02-08 | |||
| US20190118265A1 | 2019-04-25 |
Other References:
ZHONG XUAN, CHENG JING WEI, LIU YING, ZHAO XIU CHEN: "Synthesis, Magnetic and Electromagnetic Absorption Properties of Amorphous Core-Shell Fe-B@SiO2 Submicrospheres", KEY ENGINEERING MATERIALS, vol. 727, 20 January 2017 (2017-01-20), pages 204 - 210, XP055964277, DOI: 10.4028/www.scientific.net/KEM.727.204
Attorney, Agent or Firm:
MAEKAWA Makiko et al. (JP)
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