Soft magnetic flaky powder

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United States of America Patent

PATENT NO 11430588
APP PUB NO 20190326040A1
SERIAL NO

16470689

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Abstract

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In order to provide a soft magnetic flaky powder having high electrical resistance and high corrosion resistance, and a magnetic sheet including the same, the present invention provides a soft magnetic flaky powder, including a plurality of soft magnetic flaky particles. Each of the plurality of soft magnetic flaky particles contains an Fe-based alloy flaky particle and a coating layer formed on a surface of the Fe-based alloy flaky particle. The coating layer contains one or two or more components selected from chromic acid and a hydrate thereof, and a metal salt of an inorganic acid and a hydrate thereof. The inorganic acid is selected from sulfuric acid, nitric acid, chromic acid, phosphoric acid, hydrofluoric acid and acetic acid. The metal salt is selected from a Na salt, an Al salt, a Ti salt, a Cr salt, a Ni salt, a Ga salt and a Zr salt. The coating layer has a thickness of 10 nm or more.

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Patent Owner(s)

Patent OwnerAddress
SANYO SPECIAL STEEL CO LTDHIMEJI-SHI HYOGO 672-8677

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kuse, Tetsuji Himeji, JP 6 4
Miura, Koudai Himeji, JP 3 1
Sawada, Toshiyuki Himeji, JP 44 93

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