MAGNETITE-IRON-COBALT COMPOSITE POWDER FOR POWDER MAGNETIC CORE, METHOD FOR MANUFACTURING THE SAME, AND POWDER MAGNETIC CORE USING THE SAME

Title:

MAGNETITE-IRON-COBALT COMPOSITE POWDER FOR POWDER MAGNETIC CORE, METHOD FOR MANUFACTURING THE SAME, AND POWDER MAGNETIC CORE USING THE SAME

Document Type and Number:

Japanese Patent JP2007262490

Kind Code:

A

Abstract:

To provide a powder magnetic core of high performance having a low core loss, high initial magnetic permeability μi, quality coefficient Q, flat DC superposition characteristics, and excellent insulation characteristics in combination by using iron-based metal powder of a high saturation magnetic flux density Bs and to provide magnetite-iron-cobalt composite powder which is the metal powder appropriate for realization of the same and a method for manufacturing the same.

The magnetite-iron-cobalt composite powder for powder magnetic core contains magnetite, and has the average primary particle diameter of 0.7 to 5.0 μm, a bulk density of 0.6 to 2.5 g/cm3, and a cobalt content of 0.01 to 3mass%.

More Like This:

JP2600282	[Title of Invention] Method for Producing Metallic Scandium Powder
JPS6158214	METALLIC MAGNETIC POWDER AND MANUFACTURE THEREOF
JP7029313	Manufacturing method of metal ultrafine powder

Inventors:

NAKAMURA YUKIKO
KIKUCHI TAKAHIRO
GOTO SATOSHI

Application Number:

JP2006089005A

Publication Date:

October 11, 2007

Filing Date:

March 28, 2006

Export Citation:

Click for automatic bibliography generation Help

Assignee:

JFE CHEMICAL CORP

International Classes:

B22F9/20; B22F9/04; H01F1/33; H01F3/08

Domestic Patent References:

JPS5371642A	1978-06-26
JPS6092446A	1985-05-24
JPH01294804A	1989-11-28
JPH0257608A	1990-02-27
JP2002317202A	2002-10-31

Attorney, Agent or Firm:

Kenichiro Ochiai

Previous Patent: HOT-BLAST SUPPLYING APPARATUS AND HOT-BLAST SUPPLYING METHOD

Next Patent: STEEL PIPE FOR MACHINE STRUCTURE SUPERIOR IN MACHINABILITY, AND MANUFACTURING METHOD THEREFOR