Title:
PERMANENT MAGNET AND MOTOR AND GENERATOR USING SAME
Document Type and Number:
WIPO Patent Application WO/2015/141205
Kind Code:
A1
Abstract:
This permanent magnet comprises: a composition indicated by composition formula R (FepMqCurCtCo1-p-q-r-t)z (R indicates at least one element selected from rare earth elements, M indicates at least one element selected from Ti, Zr, and Hf, 0.27 ≤ p ≤ 0.45, 0.01 ≤ q ≤ 0.05, 0.01 ≤ r ≤ 0.1, 0.002 ≤ t ≤ 0.03, and 6 ≤ z ≤ 9); and a metal composition comprising a main phase including a Th2Zn17 crystal phase and an M element auxiliary phase having an M-element concentration of at least 30 at%. The M element auxiliary phase is deposited in the metal structure. The ratio of the perimeter length to the deposition area for the M element auxiliary phase is 1-10.
Inventors:
HAGIWARA MASAYA (JP)
SAKURADA SHINYA (JP)
HORIUCHI YOSUKE (JP)
KOBAYASHI TADAHIKO (JP)
KOBAYASHI TSUYOSHI (JP)
ENDO MASAKI (JP)
SANADA NAOYUKI (JP)
OKAMURA MASAMI (JP)
SAWA TAKAO (JP)
FUSE KEIICHI (JP)
HABU SATORU (JP)
SAKURADA SHINYA (JP)
HORIUCHI YOSUKE (JP)
KOBAYASHI TADAHIKO (JP)
KOBAYASHI TSUYOSHI (JP)
ENDO MASAKI (JP)
SANADA NAOYUKI (JP)
OKAMURA MASAMI (JP)
SAWA TAKAO (JP)
FUSE KEIICHI (JP)
HABU SATORU (JP)
Application Number:
PCT/JP2015/001427
Publication Date:
September 24, 2015
Filing Date:
March 14, 2015
Export Citation:
Assignee:
TOSHIBA KK (JP)
TOSHIBA MATERIALS CO LTD (JP)
TOSHIBA MATERIALS CO LTD (JP)
International Classes:
H01F1/055; C22C19/07; C22C30/02; H01F1/08; H01F41/02; H02K1/27; H02K15/03; B22F3/00; C22C1/04
Foreign References:
| JPH01179302A | 1989-07-17 | |||
| JP2002015910A | 2002-01-18 | |||
| JPH06322466A | 1994-11-22 | |||
| JP2002529593A | 2002-09-10 |
Other References:
See also references of EP 3121822A4
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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