Title:
R-T-B-BASED SINTERED MAGNET AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2016/208508
Kind Code:
A1
Abstract:
An R-T-B-based sintered magnet characterized by containing 27.5 to 34.0% by mass of R, 2 to 10% by mass of RH, 0.89 to 0.95% by mass of B, 0.1 to 0.2% by mass of Ti, 0.3 to 0.7% by mass of Ga, 0.07 to 0.50% by mass of Cu, 0.05 to 0.50% by mass of Al, 0 to 0.3% by mass of M (wherein M represents Nb and/or Zr) and a remainder made up by T and unavoidable impurities, and satisfying the following formulae (1), (2) and (3): (1) [T]-72.3([B]-0.45[Ti]) > 0; (2) ([T]-72.3([B]-0.45[Ti]))/55.85 < 13[Ga]/69.72; and (3) [Ga] ≥ [Cu].
Inventors:
SATOH TEPPEI (JP)
KUNIYOSHI FUTOSHI (JP)
ISHII RINTARO (JP)
NISHIUCHI TAKESHI (JP)
NOZAWA NORIYUKI (JP)
KUNIYOSHI FUTOSHI (JP)
ISHII RINTARO (JP)
NISHIUCHI TAKESHI (JP)
NOZAWA NORIYUKI (JP)
Application Number:
PCT/JP2016/068115
Publication Date:
December 29, 2016
Filing Date:
June 17, 2016
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
H01F1/057; B22F1/00; B22F3/00; C22C33/02; C22C38/00; H01F1/08; H01F41/02
Domestic Patent References:
| WO2013054854A1 | 2013-04-18 | |||
| WO2009122709A1 | 2009-10-08 | |||
| WO2010113371A1 | 2010-10-07 | |||
| WO2015020181A1 | 2015-02-12 |
Foreign References:
| JP2008264875A | 2008-11-06 |
Attorney, Agent or Firm:
SAMEJIMA, Mutsumi et al. (JP)
Mutsumi Sameshima (JP)
Mutsumi Sameshima (JP)
Download PDF:
Previous Patent: SOUND-PROOF STRUCTURE, LOUVER, AND PARTITION
Next Patent: FORMING MOLD, OPTICAL ELEMENT, AND METHOD FOR PRODUCING OPTICAL ELEMENT
Next Patent: FORMING MOLD, OPTICAL ELEMENT, AND METHOD FOR PRODUCING OPTICAL ELEMENT