Title:
ALLOY MATERIAL FOR R-T-B SYSTEM RARE EARTH PERMANENT MAGNET, METHOD FOR PRODUCING R-T-B SYSTEM RARE EARTH PERMANENT MAGNET, AND MOTOR
Document Type and Number:
WIPO Patent Application WO/2010/073533
Kind Code:
A1
Abstract:
Disclosed is an alloy material for R-T-B system rare earth permanent magnets, which contains an R-T-B system alloy containing R, T and B, and a high melting-point compound having a melting point of not less than 1,080˚C. (In this connection, R represents at least one element selected from a group consisting of Nd, Pr, Dy and Tb, and Dy or Tb is essentially contained in the R-T-B system alloy in an amount of 4-10% by mass; T represents transition metal(s) essentially including Fe; and B represents boron which can be partially substituted by carbon or nitrogen.)
Inventors:
NAKAJIMA KENICHIRO (JP)
Application Number:
PCT/JP2009/006851
Publication Date:
July 01, 2010
Filing Date:
December 14, 2009
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
NAKAJIMA KENICHIRO (JP)
NAKAJIMA KENICHIRO (JP)
International Classes:
C22C38/00; B22F1/00; C22C33/02; H01F1/053; H01F1/08; H01F1/09; H01F41/02
Foreign References:
| JP2006310660A | 2006-11-09 | |||
| JPH04268045A | 1992-09-24 | |||
| JPH07118787A | 1995-05-09 | |||
| JP2008214747A | 2008-09-18 |
Attorney, Agent or Firm:
SHIGA, Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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