Title:
PERMANENT MAGNET, MOTOR AND POWER GENERATOR
Document Type and Number:
WIPO Patent Application WO/2015/044974
Kind Code:
A1
Abstract:
Provided is a high-performance permanent magnet. The permanent magnet has a composition represented by a composition formula RpFeqMrCutCo100-p-q-r-t [wherein: R represents at least one element selected from rare earth elements; M represents at least one element selected from Zr, Ti and Hf; p is a number (atomic %) satisfying 10.5≤p≤12.5; q is a number (atomic %) satisfying 23≤q≤40; r is a number (atomic %) satisfying 0.88≤r≤4.5; and t is a number (atomic %) satisfying 4.5≤t≤10.7], and a metal structure comprising a cell phase that has a Th2Zn17-type crystalline phase, a cell wall phase that is formed so as to separate the Th2Zn17-type crystalline phase, an M-rich platelet phase that is formed perpendicular to the c-axis of the Th2Zn17-type crystalline phase and has a higher concentration of the element M than the cell phase, and a Cu-rich platelet phase that is formed along the M-rich platelet phase and has a higher Cu concentration than the cell phase.
More Like This:
Inventors:
HORIUCHI YOSUKE (JP)
SAKURADA SHINYA (JP)
OKAMOTO KEIKO (JP)
HAGIWARA MASAYA (JP)
KOBAYASHI TSUYOSHI (JP)
ENDO MASAKI (JP)
KOBAYASHI TADAHIKO (JP)
SAKURADA SHINYA (JP)
OKAMOTO KEIKO (JP)
HAGIWARA MASAYA (JP)
KOBAYASHI TSUYOSHI (JP)
ENDO MASAKI (JP)
KOBAYASHI TADAHIKO (JP)
Application Number:
PCT/JP2013/005622
Publication Date:
April 02, 2015
Filing Date:
September 24, 2013
Export Citation:
Assignee:
TOSHIBA KK (JP)
International Classes:
B22F3/00; H01F1/055; C22C1/04; C22C19/07; C22F1/10; H01F1/08; H02K1/27
Foreign References:
JP2013072097A | 2013-04-22 | |||
JP2013074235A | 2013-04-22 | |||
JPS63149362A | 1988-06-22 | |||
JP2013191815A | 2013-09-26 | |||
JP2010121167A | 2010-06-03 | |||
JP2008029148A | 2008-02-07 | |||
JP2008043172A | 2008-02-21 |
Other References:
See also references of EP 3051544A4
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)
Download PDF: