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Patent Searching and Data


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)
Application Number:
PCT/JP2014/001581
Publication Date:
September 24, 2015
Filing Date:
March 19, 2014
Export Citation:
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Assignee:
TOSHIBA KK (JP)
International Classes:
H01F1/055; B22F3/00; B22F3/24; C22C19/07; C22C30/02; C22F1/00; C22F1/18; H01F1/08
Foreign References:
JPS617608A1986-01-14
JP2013191814A2013-09-26
JPS6068603A1985-04-19
JPH04246103A1992-09-02
JPS60214504A1985-10-26
JPH08181009A1996-07-12
JPH1092617A1998-04-10
JP2010121167A2010-06-03
JP2008029148A2008-02-07
JP2008043172A2008-02-21
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)
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