IRON BASE RARE EARTH ALLOY POWDER AND COMPOUND COMPRISING IRON BASE RARE EARTH ALLOY POWDER, AND PERMANENT MAGNET USING THE SAME

Title:

IRON BASE RARE EARTH ALLOY POWDER AND COMPOUND COMPRISING IRON BASE RARE EARTH ALLOY POWDER, AND PERMANENT MAGNET USING THE SAME

Document Type and Number:

WIPO Patent Application WO/2002/062510

Kind Code:

A1

Abstract:

An iron base rare earth alloy powder which comprises a first iron base rare earth alloy powder having an average particle diameter of 10 $g(m)m to 70 $g(m)m and having an aspect ratio of a particle thereof of 0.4 to 1.0 and a second iron base rare earth alloy powder having an average particle diameter of 70 $g(m)m to 300 $g(m)m and having an aspect ratio of a particle thereof of less than 0.3, wherein the above first iron base rare earth alloy powder and the above second iron base rare earth alloy powder is mixed in a mixing ratio within the range of 1.49 to 4.1. The above powder exhibits improved fluidity and can be used for providing a magnet compound having high fluidity.

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Inventors:

KANEKIYO HIROKAZU (JP)
KITAYAMA HIROKAZU (JP)
HIROSAWA SATOSHI (JP)
MIYOSHI TOSHIO (JP)

Application Number:

PCT/JP2002/000993

Publication Date:

August 15, 2002

Filing Date:

February 06, 2002

Export Citation:

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Assignee:

SUMITOMO SPEC METALS (JP)
KANEKIYO HIROKAZU (JP)
KITAYAMA HIROKAZU (JP)
HIROSAWA SATOSHI (JP)
MIYOSHI TOSHIO (JP)

International Classes:

B22F3/00; B22F3/02; B22F3/22; B22F1/00; B22F7/08; C22C1/04; C22C33/02; C22C38/00; H01F1/053; H01F1/057; H01F1/058; H01F1/06; H01F1/08; (IPC1-7): B22F1/00; B22F9/04; H01F1/06

Foreign References:

JPH01204401A	1989-08-17
JPH01162702A	1989-06-27
JPH04147604A	1992-05-21
EP0632471A2	1995-01-04

Other References: