Title:
FE-CO ALLOY POWDER, MOLDED BODY FOR INDUCTOR USING SAID FE-CO ALLOY POWDER, AND INDUCTOR
Document Type and Number:
WIPO Patent Application WO/2019/142610
Kind Code:
A1
Abstract:
[Problem] To provide a Fe-Co alloy powder that has a small particle diameter, is able to achieve a high μ' in a high frequency band, and exhibits favorable heat resistance. [Solution] A Fe-Co alloy powder that has a small particle diameter, is able to achieve a high μ' in a high frequency band, and exhibits favorable heat resistance is obtained by: obtaining a slurry of a precipitate of a hydrous oxide obtained by neutralizing, in the presence of phosphorus-containing ions, an acidic aqueous solution containing trivalent Fe ions and Co ions with an alkaline aqueous solution; adding a silane compound to said slurry so as to coat the precipitate of the hydrous oxide with a hydrolysis product of the silane compound; recovering the precipitate of the hydrous oxide being coated through solid-liquid separation; obtaining iron particles coated with silicon oxide by heating the recovered precipitate; and dissolving and removing the silicon oxide coat.
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Inventors:
KANAYA HIROKI (JP)
GOTOH MASAHIRO (JP)
GOTOH MASAHIRO (JP)
Application Number:
PCT/JP2018/047416
Publication Date:
July 25, 2019
Filing Date:
December 24, 2018
Export Citation:
Assignee:
DOWA ELECTRONICS MATERIALS CO (JP)
International Classes:
H01F1/26; B22F1/00; B22F1/05; B22F1/10; B22F3/00; B22F3/02; C22C38/00; H01F1/147
Foreign References:
| JP2010024478A | 2010-02-04 | |||
| JP2013149854A | 2013-08-01 | |||
| JP2015056618A | 2015-03-23 |
Attorney, Agent or Firm:
KOMATSU Takashi (JP)
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