JPS5487630A - Method of producing rare earth cobalt magnet - Google Patents
Method of producing rare earth cobalt magnetInfo
- Publication number
- JPS5487630A JPS5487630A JP15678877A JP15678877A JPS5487630A JP S5487630 A JPS5487630 A JP S5487630A JP 15678877 A JP15678877 A JP 15678877A JP 15678877 A JP15678877 A JP 15678877A JP S5487630 A JPS5487630 A JP S5487630A
- Authority
- JP
- Japan
- Prior art keywords
- rare earth
- powder
- magnet
- produced
- cobalt magnet
- 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)
- Hard Magnetic Materials (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
PURPOSE: To produce a rate earth cobalt magnet at a low cost to meet magnetic characteristics by specifying the molecular number of Co with respect to rare earth elements through sintering of a cast material powdered after the powder of rare earth Co magnet produced by a direct reductive diffusion method is cast once it is melted.
CONSTITUTION: The powder of rare earth Co magnet produced by a direct reductive diffusion method is cast once it is melted. Then, it is crushed into powder with a grain of preferably 50 to 15 μm. The powder thus obtained is compressed under a pressure of 0.5 to 5 tons/cm2 in a magnetic field ranging from 5,000 to 15,000 Oe. The resulting green compact is sintered at 1,150 to 1,230°C and further, subjected to a ageing at 750 to 870°C. With such a method, a magnet as shown by a fomula R (co1-x.Cux)z for example can be produced, where R represents rare earth element with Z exceeding 5 up to 8.5 normally 7, 7.4 and 7.6.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15678877A JPS5487630A (en) | 1977-12-26 | 1977-12-26 | Method of producing rare earth cobalt magnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15678877A JPS5487630A (en) | 1977-12-26 | 1977-12-26 | Method of producing rare earth cobalt magnet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5487630A true JPS5487630A (en) | 1979-07-12 |
JPS5715641B2 JPS5715641B2 (en) | 1982-03-31 |
Family
ID=15635313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15678877A Granted JPS5487630A (en) | 1977-12-26 | 1977-12-26 | Method of producing rare earth cobalt magnet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5487630A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5466307A (en) * | 1992-07-07 | 1995-11-14 | Shanghai Yue Long Non-Ferrous Metals Limited | Rare earth magnetic alloy powder and its preparation |
CN108907216A (en) * | 2018-07-19 | 2018-11-30 | 兰州大学 | High-frequency high temperature R2Co17The reduction scattering preparation of based magnetic powder |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS497296A (en) * | 1972-05-27 | 1974-01-22 | ||
JPS49104860A (en) * | 1973-01-26 | 1974-10-03 |
-
1977
- 1977-12-26 JP JP15678877A patent/JPS5487630A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS497296A (en) * | 1972-05-27 | 1974-01-22 | ||
JPS49104860A (en) * | 1973-01-26 | 1974-10-03 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5466307A (en) * | 1992-07-07 | 1995-11-14 | Shanghai Yue Long Non-Ferrous Metals Limited | Rare earth magnetic alloy powder and its preparation |
CN108907216A (en) * | 2018-07-19 | 2018-11-30 | 兰州大学 | High-frequency high temperature R2Co17The reduction scattering preparation of based magnetic powder |
Also Published As
Publication number | Publication date |
---|---|
JPS5715641B2 (en) | 1982-03-31 |
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