Title:
SOFT MAGNETIC ALLOY POWDER AND GREEN COMPACT THEREOF, AND MANUFACTURING METHODS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/102229
Kind Code:
A1
Abstract:
Provided are: a soft magnetic alloy powder which has great saturation magnetization and high affinity for a resin and from which a dust core having high magnetic permeability and high saturation magnetic flux density can be manufactured; a green compact thereof; and manufacturing methods therefor. This soft magnetic alloy powder, containing, in terms of mass concentration, 40.0-50.0% of Ni and 10-10,000 ppm of Cl, with the remainder consisting of Fe and inevitable impurities, is characterized by having an average particle diameter of 0.10-2.00 μm and an average crystallite diameter of at least 0.5 times the average particle diameter. Moreover, the concentration of Ni, at an arbitrary point in a particle in the range from a core of the particle to a position which is 0.9 times the radius of the particle, is preferably 0.7-1.3 times the average Ni content of the whole particle. Consequently, the soft magnetic alloy powder has great saturation magnetization and high affinity for a resin, and facilitates the manufacture of a dust core having high magnetic permeability and high saturation magnetic flux density.
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Inventors:
MATSUKI KENSUKE (JP)
Application Number:
PCT/JP2021/032858
Publication Date:
May 19, 2022
Filing Date:
September 07, 2021
Export Citation:
Assignee:
JFE MINERAL CO LTD (JP)
International Classes:
B22F9/22; B22F1/00; B22F3/00; C22C19/03; C22C38/00; H01F1/147; H01F41/02
Foreign References:
| JP2012197474A | 2012-10-18 | |||
| JP2003193160A | 2003-07-09 |
Other References:
KAZUTOSHI HANADA, SHIN ISHIKAWA, KYOKO FUJIMOTO, KENSUKE MATSUKI: "Preparation of Submicron-size Permalloy Fine Particles by a Single Chemical Vapor Deposition Process", JOURNAL OF THE JAPAN SOCIETY OF POWDER AND POWDER METALLURGY, vol. 58, no. 11, 1 January 2011 (2011-01-01), JP , pages 645 - 648, XP009536715, ISSN: 0532-8799, DOI: 10.2497/jjspm.58.645
Attorney, Agent or Firm:
OCHIAI Kenichiro (JP)
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