Title:
METHOD FOR MANUFACTURING R-T-B SINTERED MAGNET
Document Type and Number:
WIPO Patent Application WO/2019/187857
Kind Code:
A1
Abstract:
This R-T-B sintered magnet manufacturing method comprises: a step for formulating/preparing multiple R1-T-B sintered magnet materials having different compositions; a step for formulating/preparing an R2-M alloy powder which is produced by an atomization method and which contains 65-97 mass% of R2 and 3-35 mass% of M; and a step for placing the R2-M alloy powder between the multiple R1-T-B sintered magnet materials and bonding the multiple R1-T-B sintered magnet materials at a temperature of 450-1,000°C.
Inventors:
KUNIYOSHI FUTOSHI
Application Number:
PCT/JP2019/006845
Publication Date:
October 03, 2019
Filing Date:
February 22, 2019
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
H01F41/02; B22F7/06; B22F9/08; B23K35/28; B23K35/30; C22C28/00; C22C33/02; C22C38/00; H01F1/057
Domestic Patent References:
| WO2018030187A1 | 2018-02-15 |
Foreign References:
| JP2015073045A | 2015-04-16 | |||
| JP2018026390A | 2018-02-15 |
Attorney, Agent or Firm:
OKUDA Seiji (JP)
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