MAGNETIC POWDER AND PRODUCTION METHOD THEREOF, MAGNETIC CORE AND PRODUCTION METHOD THEREOF, COIL COMPONENT AND MOTOR

WIPO Patent Application WO/2016/121951

A1

This magnetic powder is represented by general formula FeaSibBcPdCue. Therein, a, b, c, d and e satisfy 71.0 ≦ a ≦ 81.0, 0.14 ≦ b/c ≦ 5, 0 ≦ d ≦ 14, 0 < e ≦ 1.4, d ≦ 0.8a-50, e < -0.1(a+d)+10, and a+b+c+d+e = 100. The degree of crystallization measured by x-ray diffraction is less than or equal to 30% in the case of containing at least an amorphous phase and a compound phase, and is less than or equal to 60% in the case of not containing a compound phase. This magnetic powder is produced with a gas atomization method in which a dissolving chamber 2 and a atomizing chamber 3 have a mixed gas atmosphere of an inert gas and a hydrogen gas. By this means, it is possible to obtain an alloy magnetic material which has high saturation magnetic flux density and low magnetic loss; and it is possible using said magnetic powder to obtain a magnetic core and various coil components, and also a motor.

TAKAHASHI TORU (JP)
MAKINO AKIHIRO (JP)
YODOSHI NORIHARU (JP)

PCT/JP2016/052722

August 04, 2016

January 29, 2016

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MURATA MANUFACTURING CO (JP)
UNIV TOHOKU (JP)

B22F1/08; B22F3/00; B22F9/08; C22C38/00; C22C45/02; H01F1/14; H01F1/22; H02K1/02

WO2008129803A1	2008-10-30
WO2010021130A1	2010-02-25
WO2014136587A1	2014-09-12

JP2013055182A	2013-03-21
JP2012136770A	2012-07-19
JP2014075529A	2014-04-24
JP2012082476A	2012-04-26
JP2013185162A	2013-09-19
JP2001297766A	2001-10-26
JPH04314803A	1992-11-06
JP2005294461A	2005-10-20

KUNIHIRO YASUTOSHI (JP)
Kunihiro Yasutoshi (JP)

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