Title:
DUST CORE, ALLOY PARTICLE, ELECTRONIC ELEMENT, ELECTRONIC DEVICE, ELECTRIC MOTOR, AND DYNAMO
Document Type and Number:
WIPO Patent Application WO/2024/048226
Kind Code:
A1
Abstract:
Provided is a dust core that has small eddy current loss, high strength, and high relative permeability. A dust core (1) contains a plurality of alloy particles (3) each comprising: a core part (5) made of an alloy including iron and silicon; and a coating part (7) that coats the core part (5). The coating part (7) contains a solid solution of Fe2SiO4 or of Fe2SiO4 and Mg2SiO4. A plurality of metallic particles (9), each of which contains silicon at a less percentage than in the alloy of the core part (5), are scattered on the outer edge of the coating part (7). At least some of the metallic particles (9) are present in a form of being sandwiched between the coating parts (7) between adjacent alloy particles (3).
Inventors:
ITO YOICHI (JP)
SHIOTSU KENICHI (JP)
KOZUKA HISASHI (JP)
SHIOTSU KENICHI (JP)
KOZUKA HISASHI (JP)
Application Number:
PCT/JP2023/029024
Publication Date:
March 07, 2024
Filing Date:
August 09, 2023
Export Citation:
Assignee:
NITERRA CO LTD (JP)
International Classes:
H01F1/24; B22F1/00; B22F1/16; B22F1/17; B22F3/00; B22F3/24; C21D6/00; C22C33/02; C22C38/00; H01F1/147; H01F1/33; H01F3/08; H01F27/255; H02K1/02
Foreign References:
| JP2014060183A | 2014-04-03 | |||
| JP2017119908A | 2017-07-06 | |||
| JP2005142241A | 2005-06-02 | |||
| JP2006128307A | 2006-05-18 | |||
| JP2019075566A | 2019-05-16 |
Attorney, Agent or Firm:
GRANDOM PATENT LAW FIRM (JP)
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