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Patent Searching and Data


Title:
SOFT MAGNETIC FLAT POWDER
Document Type and Number:
WIPO Patent Application WO/2018/117036
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a soft magnetic flat powder having high electrical resistance and corrosion resistance; and a magnetic sheet comprising the soft magnetic flat powder. In order to fulfill the purpose, the present invention provides a soft magnetic flat powder comprising a plurality of soft magnetic flat particles, wherein each of the plurality of soft magnetic flat particles is provided with an Fe-based alloy flat particle and a coating layer formed on the surface of the Fe-based alloy flat particle, the coating layer contains one or two or more components selected from the group consisting of chromic acid, a hydrate thereof, a metal salt of an inorganic acid, and a hydrate of the metal salt, the inorganic acid is selected from the group consisting of sulfuric acid, nitric acid, chromic acid, phosphoric acid, hydrofluoric acid, and acetic acid, the metal salt is selected from the group consisting of Na salt, Al salt, Ti salt, Cr salt, Ni salt, Ga salt, and Zr salt, and the coating layer has a thickness of at least 10 nm.

Inventors:
KUSE TETSUJI (JP)
MIURA KOUDAI (JP)
SAWADA TOSHIYUKI (JP)
Application Number:
PCT/JP2017/045357
Publication Date:
June 28, 2018
Filing Date:
December 18, 2017
Export Citation:
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Assignee:
SANYO SPECIAL STEEL CO LTD (JP)
International Classes:
H01F1/24; B22F1/068; B22F1/16; C22C38/00
Foreign References:
JP2016519430A2016-06-30
JP2007084839A2007-04-05
JP2008063650A2008-03-21
JP2014225548A2014-12-04
JP2008135724A2008-06-12
JP2016072577A2016-05-09
JP2011061119A2011-03-24
Attorney, Agent or Firm:
NAGAI Hiroshi et al. (JP)
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