Magnetic powder and production method thereof, magnetic core and production method thereof, coil component and motor

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United States of America Patent

PATENT NO 10758982
APP PUB NO 20170320138A1
SERIAL NO

15661583

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A magnetic powder is represented by general formula FeaSibBcPdCue. 71.0≤a≤81.0, 0.14≤b/c≤5, 0≤d≤14, 0a−50, e<−0.1(a+d)+10, and a+b+c+d+e=100. A crystallinity is not more than 30% in the case of containing an amorphous phase and a compound phase, and is not more than 60% in the case of not containing a compound phase. The magnetic powder is produced with a gas atomization method. Whereby, it is possible to obtain an alloy magnetic material which has high saturation magnetic flux density and low magnetic loss; and a magnetic core, coil components, and a motor can be realized.

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Patent Owner(s)

  • MURATA MANUFACTURING CO., LTD.; TOHOKU MAGNET INSTITUTE CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Makino, Akihiro Sendai, JP 83 852
Takahashi, Toru Nagaokakyo, JP 625 6830
Yodoshi, Noriharu Sendai, JP 4 10

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