JPS6442501A - Production of permanent magnet - Google Patents
Production of permanent magnetInfo
- Publication number
- JPS6442501A JPS6442501A JP62197440A JP19744087A JPS6442501A JP S6442501 A JPS6442501 A JP S6442501A JP 62197440 A JP62197440 A JP 62197440A JP 19744087 A JP19744087 A JP 19744087A JP S6442501 A JPS6442501 A JP S6442501A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- obtd
- grain size
- average grain
- thin strip
- 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
- 239000011230 binding agent Substances 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910052796 boron Inorganic materials 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 239000003822 epoxy resin Substances 0.000 abstract 1
- -1 for example Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910001004 magnetic alloy Inorganic materials 0.000 abstract 1
- 239000006247 magnetic powder Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229920000647 polyepoxide Polymers 0.000 abstract 1
Landscapes
- Powder Metallurgy (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
PURPOSE:To obtain a permanent magnet having excellent magnetic characteristics with good workability at a low cost by bonding magnetic alloy powder or rear earths-iron-boron having high coercive force and large orientation degree of magnetic fields by a binder. CONSTITUTION:A thin strip of 50-60mum thickness is produced from an R-Fe-B (R is rear earths) alloy(for example, Nd13Fe82B5). This thin strip is roughly ground to 50mum average grain size and is further pulverized to, for example, 3mum average grain size by a ball mill. The fine powder obtd. in such a manner is heat-treated together with a reducing agent consisting of metal, for example, Ca at 600-800 deg.C. The magnetic powder obtd. by separating the Ca after this heat treatment is pressed in a magnetic field and is bonded by a binder consisting of an epoxy resin, etc. The high-performance bonded magnet having larger orientation degree than heretofore is thereby obtd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62197440A JPS6442501A (en) | 1987-08-07 | 1987-08-07 | Production of permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62197440A JPS6442501A (en) | 1987-08-07 | 1987-08-07 | Production of permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6442501A true JPS6442501A (en) | 1989-02-14 |
Family
ID=16374542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62197440A Pending JPS6442501A (en) | 1987-08-07 | 1987-08-07 | Production of permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6442501A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6830633B2 (en) | 2000-05-30 | 2004-12-14 | Seiko Epson Corporation | Magnetic material manufacturing method, ribbon-shaped magnetic materials, powdered magnetic materials and bonded magnets |
| US6872326B2 (en) | 2000-07-31 | 2005-03-29 | Seiko Epson Corporation | Method of manufacturing magnetic powder, magnetic powder and bonded magnets |
| US6916385B2 (en) | 2000-04-12 | 2005-07-12 | Seiko Epson Corporation | Method of manufacturing magnet materials, and ribbon-shaped magnet materials, powdered magnet materials and bonded magnets |
-
1987
- 1987-08-07 JP JP62197440A patent/JPS6442501A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6916385B2 (en) | 2000-04-12 | 2005-07-12 | Seiko Epson Corporation | Method of manufacturing magnet materials, and ribbon-shaped magnet materials, powdered magnet materials and bonded magnets |
| US6830633B2 (en) | 2000-05-30 | 2004-12-14 | Seiko Epson Corporation | Magnetic material manufacturing method, ribbon-shaped magnetic materials, powdered magnetic materials and bonded magnets |
| US7138070B2 (en) | 2000-05-30 | 2006-11-21 | Seiko Epson Corporation | Magnetic material manufacturing method, ribbon-shaped magnetic materials, powdered magnetic material and bonded magnets |
| US6872326B2 (en) | 2000-07-31 | 2005-03-29 | Seiko Epson Corporation | Method of manufacturing magnetic powder, magnetic powder and bonded magnets |
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