JPS57161044A - Permanent magnet containing rare earth element and its manufacture - Google Patents
Permanent magnet containing rare earth element and its manufactureInfo
- Publication number
- JPS57161044A JPS57161044A JP56047548A JP4754881A JPS57161044A JP S57161044 A JPS57161044 A JP S57161044A JP 56047548 A JP56047548 A JP 56047548A JP 4754881 A JP4754881 A JP 4754881A JP S57161044 A JPS57161044 A JP S57161044A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- rare earth
- earth element
- permanent magnet
- manufacture
- 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
Abstract
PURPOSE: To manufacture a sintered permanent magnet alloy with high coercive force and high maximum energy product by heat treating a magnet alloy consisting of a rare earth element, Fe, Zr and Co under specified conditions.
CONSTITUTION: This alloy consists of, by weight, 22W28% R(R is a rare earth element), 5W25% Fe, 0.2W5% Zr and the balance essentially Co. ≤5% Cu may be substituted for part of the Co. Said components are blended and melted to prepare an alloy. The alloy is pulverized and press-molded in a magnetic field having ≥about 5,000, preferably ≥7,000 Oe intensity. This molded magnet alloy is subjected to primary sintering at 1,100W1,250°C in an inert gas and secondary sintering at a temp. of 1,150W1,260°C and above the primary sintering temp., and the sintered alloy is isothermally treated at 400W750°C for ≥ about 1hr and slowly cooled from 600W1,000°C to 300W600°C to obtain a permanent magnet alloy.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56047548A JPS6034632B2 (en) | 1981-03-31 | 1981-03-31 | Method for manufacturing rare earth-containing permanent magnets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56047548A JPS6034632B2 (en) | 1981-03-31 | 1981-03-31 | Method for manufacturing rare earth-containing permanent magnets |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57161044A true JPS57161044A (en) | 1982-10-04 |
JPS6034632B2 JPS6034632B2 (en) | 1985-08-09 |
Family
ID=12778199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56047548A Expired JPS6034632B2 (en) | 1981-03-31 | 1981-03-31 | Method for manufacturing rare earth-containing permanent magnets |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6034632B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62241304A (en) * | 1986-04-12 | 1987-10-22 | Shin Etsu Chem Co Ltd | Rare earth permanent magnet |
JPH0354805A (en) * | 1989-07-21 | 1991-03-08 | Shin Etsu Chem Co Ltd | Rare-earth permanent magnet and manufacture thereof |
JP2013074235A (en) * | 2011-09-29 | 2013-04-22 | Toshiba Corp | Permanent magnet, and motor and dynamo including the same |
JP2013072097A (en) * | 2011-09-27 | 2013-04-22 | Toshiba Corp | Permanent magnet, method for producing the same, and motor and generator using the same |
JP2014156656A (en) * | 2014-03-14 | 2014-08-28 | Toshiba Corp | Permanent magnet and motor and power generator using the same |
JP2016157952A (en) * | 2016-03-18 | 2016-09-01 | 株式会社東芝 | Motor, generator, and motor car |
JP2017168847A (en) * | 2017-04-04 | 2017-09-21 | 株式会社東芝 | Permanent magnet, motor, power generator, and vehicle |
-
1981
- 1981-03-31 JP JP56047548A patent/JPS6034632B2/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62241304A (en) * | 1986-04-12 | 1987-10-22 | Shin Etsu Chem Co Ltd | Rare earth permanent magnet |
JPH0354805A (en) * | 1989-07-21 | 1991-03-08 | Shin Etsu Chem Co Ltd | Rare-earth permanent magnet and manufacture thereof |
JP2013072097A (en) * | 2011-09-27 | 2013-04-22 | Toshiba Corp | Permanent magnet, method for producing the same, and motor and generator using the same |
JP2013074235A (en) * | 2011-09-29 | 2013-04-22 | Toshiba Corp | Permanent magnet, and motor and dynamo including the same |
JP2014156656A (en) * | 2014-03-14 | 2014-08-28 | Toshiba Corp | Permanent magnet and motor and power generator using the same |
JP2016157952A (en) * | 2016-03-18 | 2016-09-01 | 株式会社東芝 | Motor, generator, and motor car |
JP2017168847A (en) * | 2017-04-04 | 2017-09-21 | 株式会社東芝 | Permanent magnet, motor, power generator, and vehicle |
Also Published As
Publication number | Publication date |
---|---|
JPS6034632B2 (en) | 1985-08-09 |
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