Title:
IRON-BASED SOFT MAGNETIC COMPOSITE POWDER FOR DUST CORES, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/095546
Kind Code:
A1
Abstract:
Provided are an iron-based soft magnetic composite powder for dust cores that has high fluidity while having an insulation layer, and a method for easily producing the iron-based soft magnetic composite powder for dust cores. This iron-based soft magnetic composite powder for dust cores includes coated particles in which an insulation layer is formed on the particle surfaces of iron-based soft magnetic particles. The insulation layer has a first coating layer that is formed from aluminum tripolyphosphate positioned on the particle surfaces, and a second coating layer that is layered on the first coating layer and is formed from a silicone resin. The coating ratio of the insulation layer on the particle surfaces is 85% or greater.
Inventors:
NAKAMURA TAKECHIKA (JP)
TAKASHITA TAKUYA (JP)
MASUOKA HIROYUKI (JP)
MATSUZAKI AKIRA (JP)
TAKASHITA TAKUYA (JP)
MASUOKA HIROYUKI (JP)
MATSUZAKI AKIRA (JP)
Application Number:
PCT/JP2023/027667
Publication Date:
May 10, 2024
Filing Date:
July 27, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
H01F1/24; B22F1/00; B22F1/10; B22F1/102; B22F1/14; B22F3/00
Foreign References:
| JP2015106590A | 2015-06-08 | |||
| JP2015230930A | 2015-12-21 | |||
| JP2009259939A | 2009-11-05 | |||
| JP2019153614A | 2019-09-12 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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