JPS5782445A - Rare earth element-cobalt permanent magnet - Google Patents
Rare earth element-cobalt permanent magnetInfo
- Publication number
- JPS5782445A JPS5782445A JP55157903A JP15790380A JPS5782445A JP S5782445 A JPS5782445 A JP S5782445A JP 55157903 A JP55157903 A JP 55157903A JP 15790380 A JP15790380 A JP 15790380A JP S5782445 A JPS5782445 A JP S5782445A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- rare earth
- earth element
- resin
- superior
- 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 develop a rare earth element-Co permanent magnet with superior magnetic characteristics by casting an Sm-Co-Cu-Fe magnet alloy contg. a specified amount of Sm so that most of the solidified structure is made columnar, pulverizing the ingot, and binding the powder with resin.
CONSTITUTION: Starting materials for a rare earth element-Co permanent magnet consisting of 21W28% Sm and the balance Co, Cu and Fe are melted in an atmosphere of an inert gas such as Ar and cast in a mold D. By controlling the cooling rate of the molten metal, the cast alloy is solidified so that at least 95% columnar crystals B are contained in the solidified structure. The ingot is subjected to soln. heat treatment, aged, and pulverized. This powder is press- molded with resin as a binder in a magnetic field and heated to cure the resin. Thus, a permanent magnet composed chiefly of Sm2Co17 type crystals and having superior magnetic characteristics such as superior residual magnetic flux density and coercive force is obtd.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55157903A JPS5782445A (en) | 1980-11-10 | 1980-11-10 | Rare earth element-cobalt permanent magnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55157903A JPS5782445A (en) | 1980-11-10 | 1980-11-10 | Rare earth element-cobalt permanent magnet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5782445A true JPS5782445A (en) | 1982-05-22 |
JPS6111303B2 JPS6111303B2 (en) | 1986-04-02 |
Family
ID=15659946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55157903A Granted JPS5782445A (en) | 1980-11-10 | 1980-11-10 | Rare earth element-cobalt permanent magnet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5782445A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6546968B2 (en) * | 1999-05-19 | 2003-04-15 | Kabushiki Kaisha Toshiba | Bond magnet and manufacturing method thereof, and actuator therewith |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2525931Y2 (en) * | 1990-02-10 | 1997-02-12 | 栄助 石田 | Prevention of stuffiness of boots |
KR960016572B1 (en) * | 1994-03-10 | 1996-12-16 | 권중택 | Shoes |
-
1980
- 1980-11-10 JP JP55157903A patent/JPS5782445A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6546968B2 (en) * | 1999-05-19 | 2003-04-15 | Kabushiki Kaisha Toshiba | Bond magnet and manufacturing method thereof, and actuator therewith |
Also Published As
Publication number | Publication date |
---|---|
JPS6111303B2 (en) | 1986-04-02 |
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