Title:
MANUFACTURE OF ALLOY POWDER FOR RARE EARTH METAL MAGNET
Document Type and Number:
Japanese Patent JPH02194108
Kind Code:
A
Abstract:
PURPOSE: To easily obtain powder having the prescribed particle size in much quantity by reacting rare earth metal or alloy thereof with hydrogen at the specific temp., embrittling and, after that, pulverizing.
CONSTITUTION: By alloying raw material powder with mechanical alloying method, the alloy powder for rare earth metal magnet composed of the rare earth metal - transition metal - metalloid is manufactured. Then, the rare metal or the alloy thereof is embrittled by being reacted with hydrogen at 300 - 1,000°C, and after that, this is pulverized to make the raw material powder. In this result, a uniform alloy powder for magnet can be mass-produced, and the good yield is obtd.
Inventors:
SHIMIZU TAKASUMI
SUMIDA YOSHIHIRO
YOSHIDA YUTAKA
SUMIDA YOSHIHIRO
YOSHIDA YUTAKA
Application Number:
JP1211889A
Publication Date:
July 31, 1990
Filing Date:
January 20, 1989
Export Citation:
Assignee:
DAIDO STEEL CO LTD
International Classes:
B22F1/00; H01F1/057; H01F1/06; B22F9/04; (IPC1-7): B22F1/00; B22F9/04; H01F1/06
Attorney, Agent or Firm:
Kazuo Yoshida
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