Title:
PERMANENT MAGNET, MOTOR AND GENERATOR
Document Type and Number:
WIPO Patent Application WO/2015/140832
Kind Code:
A1
Abstract:
A high-performance permanent magnet is provided. This permanent magnet comprises a composition represented by compositional formula: RpFeqMrCutCo100-p-q-r-t (in the formula, R is at least one element selected from the rare earth elements, M is at least one element selected from the group consisting of Zr, Ti and Hf, p is a number satisfying 10.8 ≦ p ≦ 12.5 at.%, q is a number satisfying 25 ≦ q ≦ 40 at.%, r is a number satisfying 0.88 ≦ r ≦ 4.5 at.%, and t is a number satisfying 3.5 ≦ t ≦ 13.5 at.%), and a metal material including a main phase having a Th2Zn17-type crystal phase and Cu-M-rich phases having a higher Cu concentration and M concentration than the main phase.
Inventors:
HORIUCHI YOSUKE (JP)
SAKURADA SHINYA (JP)
OKAMOTO KEIKO (JP)
HAGIWARA MASAYA (JP)
KOBAYASHI TSUYOSHI (JP)
ENDO MASAKI (JP)
KOBAYASHI TADAHIKO (JP)
SANADA NAOYUKI (JP)
SAKURADA SHINYA (JP)
OKAMOTO KEIKO (JP)
HAGIWARA MASAYA (JP)
KOBAYASHI TSUYOSHI (JP)
ENDO MASAKI (JP)
KOBAYASHI TADAHIKO (JP)
SANADA NAOYUKI (JP)
Application Number:
PCT/JP2014/001581
Publication Date:
September 24, 2015
Filing Date:
March 19, 2014
Export Citation:
Assignee:
TOSHIBA KK (JP)
International Classes:
H01F1/055; B22F3/00; B22F3/24; C22C19/07; C22C30/02; C22F1/00; C22F1/18; H01F1/08
Foreign References:
JPS617608A | 1986-01-14 | |||
JP2013191814A | 2013-09-26 | |||
JPS6068603A | 1985-04-19 | |||
JPH04246103A | 1992-09-02 | |||
JPS60214504A | 1985-10-26 | |||
JPH08181009A | 1996-07-12 | |||
JPH1092617A | 1998-04-10 | |||
JP2010121167A | 2010-06-03 | |||
JP2008029148A | 2008-02-07 | |||
JP2008043172A | 2008-02-21 |
Other References:
See also references of EP 3121820A4
Attorney, Agent or Firm:
SAKURA PATENT OFFICE, p. c. (JP)
Patent business corporation cherry tree international patent firm (JP)
Patent business corporation cherry tree international patent firm (JP)
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