IRON POWDER FOR DUST CORE - JFE STEEL CORP

Title:

IRON POWDER FOR DUST CORE

Document Type and Number:

WIPO Patent Application WO/2009/078453

Kind Code:

A1

Abstract:

Disclosed is an iron powder for dust cores, wherein the surface of each iron powder particle is covered with an oxide film composed of an Si-based oxide in which the atomic number ratio between Si and Fe satisfies the following relation: Si/Fe ≥ 0.8. Consequently, the iron powder enables formation of a dust core having high resistivity and excellent iron loss characteristics, without causing decrease in mechanical strength.

Inventors:

KAWANO TAKASHI (JP)
MAKIISHI NORIKO (JP)
HIRATANI TATSUHIKO (JP)
NAKAMURA NAOMICHI (JP)
OISHI YUSUKE (JP)
HOSHINA EISUKE (JP)
YAMAGUCHI TOSHIYA (JP)
OKAMOTO DAISUKE (JP)
HATTORI TAKESHI (JP)

Application Number:

PCT/JP2008/073026

Publication Date:

June 25, 2009

Filing Date:

December 11, 2008

Export Citation:

Click for automatic bibliography generation Help

Assignee:

JFE STEEL CORP (JP)
TOYOTA MOTOR CO LTD (JP)
KAWANO TAKASHI (JP)
MAKIISHI NORIKO (JP)
HIRATANI TATSUHIKO (JP)
NAKAMURA NAOMICHI (JP)
OISHI YUSUKE (JP)
HOSHINA EISUKE (JP)
YAMAGUCHI TOSHIYA (JP)
OKAMOTO DAISUKE (JP)
HATTORI TAKESHI (JP)

International Classes:

H01F1/33; B22F1/102; B22F1/16

Foreign References:

JP2007231331A	2007-09-13
JP2007231330A	2007-09-13
JPH07235429A	1995-09-05
JP2005008959A	2005-01-13
JP2003217919A	2003-07-31
JPH1187123A	1999-03-30
JP2003303711A	2003-10-24
JP2007231330A	2007-09-13

Other References: