JPS57104203A - Production of permanent magnet alloy - Google Patents
Production of permanent magnet alloyInfo
- Publication number
- JPS57104203A JPS57104203A JP55181454A JP18145480A JPS57104203A JP S57104203 A JPS57104203 A JP S57104203A JP 55181454 A JP55181454 A JP 55181454A JP 18145480 A JP18145480 A JP 18145480A JP S57104203 A JPS57104203 A JP S57104203A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- production
- heat treatment
- coercive force
- annealed
- 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
- H01F1/0557—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together sintered
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 enhance a coercive force of a permanent magnet by a method wherein an alloy made of a specific composition ratio of Sm, Y, Fe, Cu, Co, etc. is annealed at a specific temperature range for a specific period after solution heat treatment. CONSTITUTION:An alloy composed of 18-24wt% of Sm and Y (must be within 0.15<Y/(Y+Sm)<0.6), 15-26wt% of Fe, 2.5-7wt% of Cu, 1-5wt% of M (M is at least one out of Ti, Zr and Hf) and the remainder of Co is ground and sintered. Then, it is quenched down to 900 deg.C after solution heat treatment at 1,100-1,250 deg.C, and afterwards annealed at 650-950 deg.C for 0.1-200hr and slowly cooled down to 300 deg.C at least. With this technique, an immensely high intrinsic coercive force compatible to 10-30kOe of SmCo5. Further, because the period of annealing can be adjusted, a saturated intensity of magnetization can be choiced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55181454A JPS57104203A (en) | 1980-12-22 | 1980-12-22 | Production of permanent magnet alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55181454A JPS57104203A (en) | 1980-12-22 | 1980-12-22 | Production of permanent magnet alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57104203A true JPS57104203A (en) | 1982-06-29 |
Family
ID=16101037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55181454A Pending JPS57104203A (en) | 1980-12-22 | 1980-12-22 | Production of permanent magnet alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57104203A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02128404A (en) * | 1988-11-08 | 1990-05-16 | Fuji Elelctrochem Co Ltd | Manufacture of rare-earth 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 |
| EP1187147A3 (en) * | 2000-09-08 | 2003-10-01 | Shin-Etsu Chemical Co., Ltd. | Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing |
-
1980
- 1980-12-22 JP JP55181454A patent/JPS57104203A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02128404A (en) * | 1988-11-08 | 1990-05-16 | Fuji Elelctrochem Co Ltd | Manufacture of rare-earth 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 |
| EP1187147A3 (en) * | 2000-09-08 | 2003-10-01 | Shin-Etsu Chemical Co., Ltd. | Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing |
| EP1626418A3 (en) * | 2000-09-08 | 2007-11-07 | Shin-Etsu Chemical Co., Ltd. | Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing |
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