Title:
RARE EARTH-FE-B ANISOTROPIC PERMANENT MAGNET AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JPH0239503
Kind Code:
A
Abstract:
PURPOSE: To improve magnetic characteristics even with thin shape by making an R2P14B intermetel compound phase, which is oriented in the direction of crystallographic C axis by rolling recrystallized organization and takes tetragonal structure of specific crystal diameter, a main phase.
CONSTITUTION: The R2Fe14B intermetal compound phase taking tetragonal structure of 0.05-50μm, preferably, 0.05-10μm in average crystal diameter is made a main phase, and this main phase is recrystallized rolled organization having aggregate structure oriented in the direction of crystallographic C axis. And since there is no mixture of impurity such as O2, etc., and density ratio is almost 100%, magnetic characteristics are very stable.
Inventors:
TAKESHITA TAKUO
KIMURA TOSHIRO
YAMAUCHI TORU
NAKAYAMA RYOJI
OGAWA TAMOTSU
KIMURA TOSHIRO
YAMAUCHI TORU
NAKAYAMA RYOJI
OGAWA TAMOTSU
Application Number:
JP19033988A
Publication Date:
February 08, 1990
Filing Date:
July 29, 1988
Export Citation:
Assignee:
MITSUBISHI METAL CORP
International Classes:
C21D6/00; H01F1/053; H01F1/057; H01F1/08; H01F41/02; (IPC1-7): C21D6/00; H01F1/053; H01F1/08
Domestic Patent References:
| JPS63121601A | 1988-05-25 | |||
| JPS6223902A | 1987-01-31 | |||
| JPS63116404A | 1988-05-20 | |||
| JPS60100402A | 1985-06-04 | |||
| JPS63213320A | 1988-09-06 | |||
| JPS63226007A | 1988-09-20 | |||
| JPS6390104A | 1988-04-21 | |||
| JPS60119701A | 1985-06-27 | |||
| JPS63111155A | 1988-05-16 | |||
| JPS6338216A | 1988-02-18 | |||
| JPS63178505A | 1988-07-22 |
Attorney, Agent or Firm:
Kazuo Tomita (1 person outside)
Next Patent: JPH0239504