JPS54121999A - Manufacture of permanent magnet - Google Patents
Manufacture of permanent magnetInfo
- Publication number
- JPS54121999A JPS54121999A JP2828278A JP2828278A JPS54121999A JP S54121999 A JPS54121999 A JP S54121999A JP 2828278 A JP2828278 A JP 2828278A JP 2828278 A JP2828278 A JP 2828278A JP S54121999 A JPS54121999 A JP S54121999A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- molded
- permanent magnet
- magnet powder
- impregnated
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
- H01F1/0558—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together bonded together
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE:To obtain permanent magnet which is excellent in magnetic characteristics and mechanical strength by the procedure in which a poly amide-containing solution is added to a rare earth element-cobalt magnet powder and then the mixture is molded by compression in a magnetic field, then impregnated with epoxy resin, and lastly molded again by a hot press forming. CONSTITUTION:An intermetallic compound magnet powder composed of cobalt and rare earth metals, e.g., samarium, yttrium, cerium, misch metal, etc., is mixed and dispersed in an alcoholic solution of 0.01 to 5 wt.% polyamide and then the mixture is molded by compression in a magnetic field, where the intensity of magnetic field is 16 kOe for example and the pressure of molding is 3 t/cm<2> for example. Then, after the removal of solvent, the molding is impregnated with 2 wt.% (on the basis of magnet powder) epoxy resin and then subjected to a hot press forming after preheating to obtain a permanent magnet. Thus, the use of the liquid polyamide, serving as a curing agent and a lubricant, can increase magnetic characteristic and mechanical strength.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2828278A JPS54121999A (en) | 1978-03-14 | 1978-03-14 | Manufacture of permanent magnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2828278A JPS54121999A (en) | 1978-03-14 | 1978-03-14 | Manufacture of permanent magnet |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54121999A true JPS54121999A (en) | 1979-09-21 |
Family
ID=12244236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2828278A Pending JPS54121999A (en) | 1978-03-14 | 1978-03-14 | Manufacture of permanent magnet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54121999A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0281295A2 (en) * | 1987-03-03 | 1988-09-07 | Imperial Chemical Industries Plc | Process and composition for producing bonded magnet |
JPS63304602A (en) * | 1987-06-03 | 1988-12-12 | Kanegafuchi Chem Ind Co Ltd | Resin-bonded magnet |
JPH01158629A (en) * | 1987-07-27 | 1989-06-21 | Seiko Epson Corp | Actuator |
JPH01294234A (en) * | 1987-08-27 | 1989-11-28 | Seiko Epson Corp | Actuator |
JP2010262996A (en) * | 2009-04-30 | 2010-11-18 | Hitachi Metals Ltd | Rare earth permanent magnet and method of manufacturing the same |
-
1978
- 1978-03-14 JP JP2828278A patent/JPS54121999A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0281295A2 (en) * | 1987-03-03 | 1988-09-07 | Imperial Chemical Industries Plc | Process and composition for producing bonded magnet |
JPS63304602A (en) * | 1987-06-03 | 1988-12-12 | Kanegafuchi Chem Ind Co Ltd | Resin-bonded magnet |
JPH01158629A (en) * | 1987-07-27 | 1989-06-21 | Seiko Epson Corp | Actuator |
JPH01294234A (en) * | 1987-08-27 | 1989-11-28 | Seiko Epson Corp | Actuator |
JP2010262996A (en) * | 2009-04-30 | 2010-11-18 | Hitachi Metals Ltd | Rare earth permanent magnet and method of manufacturing the same |
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