JPS5655533A - Manufactre of rare earth element magnet - Google Patents
Manufactre of rare earth element magnetInfo
- Publication number
- JPS5655533A JPS5655533A JP12966779A JP12966779A JPS5655533A JP S5655533 A JPS5655533 A JP S5655533A JP 12966779 A JP12966779 A JP 12966779A JP 12966779 A JP12966779 A JP 12966779A JP S5655533 A JPS5655533 A JP S5655533A
- Authority
- JP
- Japan
- Prior art keywords
- rare earth
- magnet
- elements
- earth element
- earth elements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Powder Metallurgy (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
PURPOSE: To manufacture a rare earth element magnet with superior magnetic characteristics by forming powder of an alloy consisting of rare earth elements and other elements into a magnet and by sintering in a high pressure gas atmosphere and annealing.
CONSTITUTION: Rare earth elements and other elements are weighed, melted in an inert gas such as Ar substituted after evacuation, and cast in a metal mold to manufacture an alloy ingot. The ingot is pulverized in an inert gas, in vacuum or in an org. solvent free from water and impurities. The resulting powder is formed or press-formed into a magnet in a magnetic field. In order to further raise the density the magnet is sintered in a high pressure gas atmosphere or Ar, He, N2 or other gas of about 3W100atm. after evacuation, and then it is annealed. Thus, evaporation of the rare earth elements is reduced, and the magnetic characteristics, especially coercive force are enhanced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12966779A JPS5655533A (en) | 1979-10-08 | 1979-10-08 | Manufactre of rare earth element magnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12966779A JPS5655533A (en) | 1979-10-08 | 1979-10-08 | Manufactre of rare earth element magnet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5655533A true JPS5655533A (en) | 1981-05-16 |
JPS6231056B2 JPS6231056B2 (en) | 1987-07-06 |
Family
ID=15015163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12966779A Granted JPS5655533A (en) | 1979-10-08 | 1979-10-08 | Manufactre of rare earth element magnet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5655533A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6070102A (en) * | 1983-08-19 | 1985-04-20 | Tohoku Metal Ind Ltd | Atmosphere sintering method |
JPS60131949A (en) * | 1983-12-19 | 1985-07-13 | Hitachi Metals Ltd | Iron-rare earth-nitrogen permanent magnet |
JP2013089687A (en) * | 2011-10-14 | 2013-05-13 | Nitto Denko Corp | Rare earth permanent magnet and method for manufacturing rare earth permanent magnet |
JP2013191612A (en) * | 2012-03-12 | 2013-09-26 | Nitto Denko Corp | Rare earth permanent magnet and method of manufacturing the same |
JP2013191613A (en) * | 2012-03-12 | 2013-09-26 | Nitto Denko Corp | Rare earth permanent magnet and method of manufacturing the same |
JP2013191611A (en) * | 2012-03-12 | 2013-09-26 | Nitto Denko Corp | Rare earth permanent magnet and method of manufacturing the same |
WO2015140836A1 (en) * | 2014-03-20 | 2015-09-24 | 株式会社 東芝 | Permanent magnet, motor, and generator |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52103698A (en) * | 1976-02-27 | 1977-08-31 | Fujitsu Ltd | Preparing rare earth cobalt magnet |
JPS5353514A (en) * | 1976-10-26 | 1978-05-16 | Fujitsu Ltd | Production of rare earth elemens cobalt magnet |
-
1979
- 1979-10-08 JP JP12966779A patent/JPS5655533A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52103698A (en) * | 1976-02-27 | 1977-08-31 | Fujitsu Ltd | Preparing rare earth cobalt magnet |
JPS5353514A (en) * | 1976-10-26 | 1978-05-16 | Fujitsu Ltd | Production of rare earth elemens cobalt magnet |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6070102A (en) * | 1983-08-19 | 1985-04-20 | Tohoku Metal Ind Ltd | Atmosphere sintering method |
JPS60131949A (en) * | 1983-12-19 | 1985-07-13 | Hitachi Metals Ltd | Iron-rare earth-nitrogen permanent magnet |
JPH0582041B2 (en) * | 1983-12-19 | 1993-11-17 | Hitachi Metals Ltd | |
JP2013089687A (en) * | 2011-10-14 | 2013-05-13 | Nitto Denko Corp | Rare earth permanent magnet and method for manufacturing rare earth permanent magnet |
JP2013191612A (en) * | 2012-03-12 | 2013-09-26 | Nitto Denko Corp | Rare earth permanent magnet and method of manufacturing the same |
JP2013191613A (en) * | 2012-03-12 | 2013-09-26 | Nitto Denko Corp | Rare earth permanent magnet and method of manufacturing the same |
JP2013191611A (en) * | 2012-03-12 | 2013-09-26 | Nitto Denko Corp | Rare earth permanent magnet and method of manufacturing the same |
WO2015140836A1 (en) * | 2014-03-20 | 2015-09-24 | 株式会社 東芝 | Permanent magnet, motor, and generator |
CN105164765A (en) * | 2014-03-20 | 2015-12-16 | 株式会社东芝 | Permanent magnet, motor, and generator |
JPWO2015140836A1 (en) * | 2014-03-20 | 2017-04-06 | 株式会社東芝 | Permanent magnets, motors, and generators |
Also Published As
Publication number | Publication date |
---|---|
JPS6231056B2 (en) | 1987-07-06 |
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