Title:
SOFT-MAGNETIC METAL POWDER, PRODUCTION METHOD FOR SAME, AND RESIN COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2024/048499
Kind Code:
A1
Abstract:
[Problem] To provide a soft-magnetic metal powder that comprises fine particles but does not readily aggregate and therefore has good dispersibility, is spherical, has excellent ability to fill and be dispersed in resins and the like, and has a narrow particle size distribution and a uniform primary particle diameter and thereby makes it possible to produce a magnetic material that has excellent magnetic characteristics at desired frequencies and has a high Q value in high-frequency bands of at least 1 GHz. [Solution] A soft-magnetic metal powder according to the present invention contains 5.0–10.0 wt% of B, the remainder being at least one metal selected from among Fe, Ni, and Co. The soft-magnetic metal powder has an average primary particle diameter of 0.05–1.5 μm, a coefficient of variation (standard deviation of primary particle diameter/average primary particle diameter) of no more than 0.25, and an aggregation ratio (average aggregate particle diameter/average primary particle diameter) of no more than 3.
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Inventors:
TSUSHIRO REI (JP)
NISHIO YASUSHI (JP)
ENDO YASUSHI (JP)
NISHIO YASUSHI (JP)
ENDO YASUSHI (JP)
Application Number:
PCT/JP2023/030897
Publication Date:
March 07, 2024
Filing Date:
August 28, 2023
Export Citation:
Assignee:
TODA KOGYO CORP (JP)
UNIV TOHOKU (JP)
UNIV TOHOKU (JP)
International Classes:
H01F1/20; B22F1/00; B22F1/05; B22F1/10; B22F3/00; B22F9/24; C22C38/00; H01F1/26
Foreign References:
| JP2016225604A | 2016-12-28 | |||
| JP2012238866A | 2012-12-06 | |||
| JP2010261065A | 2010-11-18 | |||
| JP2022119746A | 2022-08-17 | |||
| JP2017088962A | 2017-05-25 | |||
| JP2022134575A | 2022-09-15 |
Attorney, Agent or Firm:
MAEKAWA Makiko et al. (JP)
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