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Title:
FE-NI ALLOY POWDER, INDUCTOR MOLDED ARTICLE USING SAME, AND INDUCTOR
Document Type and Number:
WIPO Patent Application WO/2019/142611
Kind Code:
A1
Abstract:
[Problem] To provide a Fe-Ni alloy powder that has a small particle diameter, is capable of achieving a high µ' in a high-frequency region, and has good heat resistance. [Solution] In the presence of phosphorus-containing ions, an acidic aqueous solution including trivalent Fe ions and Ni ions is neutralized with an alkali aqueous solution, and a slurry of a hydrous oxide precipitate is obtained, after which a silane compound is added to the slurry and the hydrous oxide precipitate is coated with a hydrolysis product of the silane compound, the coated hydrous oxide precipitate is solid-liquid separated and recovered, the recovered precipitate is heated, and iron particles coated with silicon oxide are obtained, after which the silicon oxide coating is dissolved and removed, whereby a Fe-Ni alloy powder is obtained that has a small particle diameter, is capable of achieving a high µ' in a high-frequency region, and has good heat resistance.

Inventors:
KANAYA HIROKI (JP)
GOTOH MASAHIRO (JP)
Application Number:
JP2018/047417
Publication Date:
July 25, 2019
Filing Date:
December 24, 2018
Export Citation:
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Assignee:
DOWA ELECTRONICS MATERIALS CO (Postcode1010021, JP)
International Classes:
B22F1/00; B22F3/00; C22C38/00; H01F1/147; H01F27/255
Foreign References:
JPH04329847A1992-11-18
JP2011058058A2011-03-24
JP2009114505A2009-05-28
JP2010053372A2010-03-11
JP2017063156A2017-03-30
Attorney, Agent or Firm:
KOMATSU Takashi (Postcode1030002, JP)
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