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Title:
RADIAL ANISOTROPIC SINTER MAGNET AND MAGNET ROTOR
Document Type and Number:
Japanese Patent JP2012016275
Kind Code:
A
Abstract:

To provide a radial anisotropic sinter magnet which has an excellent magnetic characteristic without any breaking or cracking at the time of sintering and limited cooling even when a ratio of inner and outer diameters is small.

A radial anisotropic sinter magnet is formed in a cylindrical shape, contains a part which is oriented in a direction slanting in relation to a radial direction by 30 degrees or greater and occupies no less than 2% and no more than 50% of a magnetic volume, and contains a part which is oriented in the radial direction or slanted in relation to the radial direction by less than 30 degrees and occupies the rest of the magnetic volume. Thus, the radial anisotropic sinter magnet 21 has an excellent magnetic characteristic without any breaking or cracking at the time of sintering and limited cooling even when a ratio of inner and outer diameters is small.


Inventors:
SATO KOJI
KAWABATA MITSUO
MINOWA TAKEHISA
Application Number:
JP2011188275A
Publication Date:
January 19, 2012
Filing Date:
August 31, 2011
Export Citation:
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Assignee:
SHINETSU CHEMICAL CO
International Classes:
H02K15/03; H01F1/08; H01F13/00
Domestic Patent References:
JPH06330103A1994-11-29
JPH01117011A1989-05-09
JPH0698504A1994-04-08
JPS6214410A1987-01-23
JPS60245460A1985-12-05
JPH0686484A1994-03-25
JP2000175387A2000-06-23
JPH06330103A1994-11-29
JPH01117011A1989-05-09
JPH0698504A1994-04-08
JPS6214410A1987-01-23
JPS60245460A1985-12-05
Attorney, Agent or Firm:
Takashi Kojima
Saori Shigematsu
Katsunari Kobayashi
Takeshi Ishikawa



 
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