Title:
MANUFACTURE OF HIGH-QUALITY MAGNET MATERIAL
Document Type and Number:
Japanese Patent JPH06112027
Kind Code:
A
Abstract:
PURPOSE: To manufacture a low-cost material for high-quality R-Fe-B magnets relatively easily.
CONSTITUTION: This high characteristic magnet material is manufactured by the method, wherein a molten alloy mainly comprising 12-19 at% of R (R represents at least one kind of rare earth element including Y), 5-8.5 at% of B5 and 72.5-82.5at% of Fe is homogenized by heat-treatment at the temperature of 900°C-1150°C, next the particles produced by fine crushing the alloy are molded in a magnetic field to be processed at the temperature of 600-1000°C in hydrogen and then sintered within the temperature range of 1000°C-1150°C in vacuum of Ar inert gas atmosphere.
Inventors:
KIYOMIYA TERUO
YASUMURA TAKAAKI
SUZUKI YASUTOSHI
YUKIMURA HARUHIRO
HAYASHI TOMOYUKI
NAKAGAWA YOSHITERU
MATSUI KAZUO
YASUMURA TAKAAKI
SUZUKI YASUTOSHI
YUKIMURA HARUHIRO
HAYASHI TOMOYUKI
NAKAGAWA YOSHITERU
MATSUI KAZUO
Application Number:
JP25696992A
Publication Date:
April 22, 1994
Filing Date:
September 25, 1992
Export Citation:
Assignee:
FUJI ELECTROCHEMICAL CO LTD
International Classes:
B22F1/00; B22F3/02; B22F3/12; C22C33/02; C22C38/00; H01F1/057; H01F1/06; H01F1/08; (IPC1-7): H01F1/08; B22F1/00; B22F3/02; B22F3/12; C22C33/02; C22C38/00; H01F1/06
Attorney, Agent or Firm:
Kazuo Sato (2 outside)