JPS5624903A - Manufacture of permanent magnet - Google Patents
Manufacture of permanent magnetInfo
- Publication number
- JPS5624903A JPS5624903A JP10046079A JP10046079A JPS5624903A JP S5624903 A JPS5624903 A JP S5624903A JP 10046079 A JP10046079 A JP 10046079A JP 10046079 A JP10046079 A JP 10046079A JP S5624903 A JPS5624903 A JP S5624903A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- treatment
- magnet
- coercive force
- aging heat
- 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
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
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 increase coercive force of a permanent magnet and to obtain a magnet having an excellent energy product by a method wherein at least a liquefaction and an aging heat-treatment are performed at the time of heat-treatment and a permanent magnetization of a rare-earth transition metallic compound, and also the aging heat-treatments are performed several times by prescribing in advance the temperature to be applied. CONSTITUTION:When making a magnet consisted of an A2B17 compound (Y, La and one or two different rare-earth elements or more for A and at least one or two different transition elements or more including Co or Fe for B), at least several times of heat-treatments are to be performed for liquefaction and aging heat-treatment. To be more precise, after the above alloy has been melted in an Ar atmosphere, it is maintained at 1,180 deg.C for 8hr and then a forced cooling is performed. Subsequently, it is maintained at 800 deg.C for approximately 2hr as an aging heat-treatment and after having been cooled, it is heat-treated again under the same condition as above. In addition, a heat-treatment is performed again, if necessary, at a temperature below 800 deg.C. As a result, numerous fine deposited nuclei are grown in the interior section of the magnet and a deposition which increases coercive force takes place, thereby increasing coercive force remarkably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54100460A JPS5829603B2 (en) | 1979-08-07 | 1979-08-07 | Permanent magnet manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54100460A JPS5829603B2 (en) | 1979-08-07 | 1979-08-07 | Permanent magnet manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5624903A true JPS5624903A (en) | 1981-03-10 |
| JPS5829603B2 JPS5829603B2 (en) | 1983-06-23 |
Family
ID=14274514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54100460A Expired JPS5829603B2 (en) | 1979-08-07 | 1979-08-07 | Permanent magnet manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5829603B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01111304A (en) * | 1987-10-24 | 1989-04-28 | Fuji Elelctrochem Co Ltd | Manufacture of permanent magnet |
| DE4015683A1 (en) * | 1990-05-16 | 1991-11-21 | Schramberg Magnetfab | Rare earth-iron-copper-cobalt alloy for permanent magnet - ŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸ resistant to corrosion, high temp. and high opposite magnetic field |
-
1979
- 1979-08-07 JP JP54100460A patent/JPS5829603B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01111304A (en) * | 1987-10-24 | 1989-04-28 | Fuji Elelctrochem Co Ltd | Manufacture of permanent magnet |
| DE4015683A1 (en) * | 1990-05-16 | 1991-11-21 | Schramberg Magnetfab | Rare earth-iron-copper-cobalt alloy for permanent magnet - ŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸ resistant to corrosion, high temp. and high opposite magnetic field |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5829603B2 (en) | 1983-06-23 |
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