Title:
RFeB-BASED SINTERED MAGNET
Document Type and Number:
WIPO Patent Application WO/2016/027791
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a RFeB-based sintered magnet that essentially does not contain heavy rare earth elements RH(Dy, Tb, and Ho) and that is suitable for applications in which the temperature increases during use. The RFeB-based sintered magnet pertaining to the present invention contains, in addition to Fe and B, Nd and/or Pr as the rare earth element R, and does not contain Dy, Tb, or Ho, wherein the temperature characteristic value t(100-23) defined as set out in FF using the coercive force value Hcj(23) when the temperature is 23°C and the coercive force value Hcj(100) when the temperature is 100°C is 0.58 < t(100-23) < 0.
Inventors:
UNE YASUHIRO (JP)
KUBO HIROKAZU (JP)
SAGAWA MASATO (JP)
SUGIMOTO SATOSHI (JP)
MATSUURA MASASHI (JP)
NAKAMURA MICHIHIDE (JP)
KUBO HIROKAZU (JP)
SAGAWA MASATO (JP)
SUGIMOTO SATOSHI (JP)
MATSUURA MASASHI (JP)
NAKAMURA MICHIHIDE (JP)
Application Number:
PCT/JP2015/073064
Publication Date:
February 25, 2016
Filing Date:
August 18, 2015
Export Citation:
Assignee:
INTERMETALLICS CO LTD (JP)
International Classes:
H01F1/057; B22F3/02; H01F1/08; H01F41/02; C22C38/00
Domestic Patent References:
| WO2009122709A1 | 2009-10-08 | |||
| WO2014142137A1 | 2014-09-18 |
Foreign References:
| JP2010182827A | 2010-08-19 | |||
| JP2010219499A | 2010-09-30 | |||
| JP2011216720A | 2011-10-27 |
Other References:
See also references of EP 3185252A4
Attorney, Agent or Firm:
Kyoto International Patent Law Office (JP)
Patent business corporation Kyoto international patent firm (JP)
Patent business corporation Kyoto international patent firm (JP)
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