JPS57107006A - Permanent magnet made of rare-earth cobalt - Google Patents
Permanent magnet made of rare-earth cobaltInfo
- Publication number
- JPS57107006A JPS57107006A JP55184329A JP18432980A JPS57107006A JP S57107006 A JPS57107006 A JP S57107006A JP 55184329 A JP55184329 A JP 55184329A JP 18432980 A JP18432980 A JP 18432980A JP S57107006 A JPS57107006 A JP S57107006A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- rare
- alloy
- macrostructure
- ingot
- 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
- 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)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE:To produce a permanent magnet having good saturated magnetization and coercive force characteristics by a method wherein an alloy including specific ratios of Sm, Ce, Co, Cu and Fe is used and yet the macrostructure of its ingot in casting is mainly a columnar crystal, and this is bonded with resin. CONSTITUTION:With an alloy composed of Sm, Ce, Co, Cu and Fe, the composition is set at Sm1-xCex(Co1-u-vCuuFev)z when represented by an atomic ratio where 0<x<0.5, 0<u<2.0, 0<v<0.5, 6.5<=z<=9, and the alloy has an R2Co17 type crystal as a main component when R is a complex of Sm and Ce, and yet the macrostructure of its ingot in casting must be mainly a columnar crystal. These are bonded with resin. Decrease of a coercive force and saturated magnetization due to substitution of Ce for Sm can be prevented by columnar crystallization, and decrease of a manufacturing cost of Co permanent magnets can be gained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55184329A JPS57107006A (en) | 1980-12-25 | 1980-12-25 | Permanent magnet made of rare-earth cobalt |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55184329A JPS57107006A (en) | 1980-12-25 | 1980-12-25 | Permanent magnet made of rare-earth cobalt |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57107006A true JPS57107006A (en) | 1982-07-03 |
JPS648457B2 JPS648457B2 (en) | 1989-02-14 |
Family
ID=16151407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55184329A Granted JPS57107006A (en) | 1980-12-25 | 1980-12-25 | Permanent magnet made of rare-earth cobalt |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57107006A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5216444A (en) * | 1975-07-30 | 1977-02-07 | Matsushita Refrigeration | Automatic spot welding process |
JPS5521575A (en) * | 1978-08-03 | 1980-02-15 | Seiko Epson Corp | Permanent magnet material |
-
1980
- 1980-12-25 JP JP55184329A patent/JPS57107006A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5216444A (en) * | 1975-07-30 | 1977-02-07 | Matsushita Refrigeration | Automatic spot welding process |
JPS5521575A (en) * | 1978-08-03 | 1980-02-15 | Seiko Epson Corp | Permanent magnet material |
Also Published As
Publication number | Publication date |
---|---|
JPS648457B2 (en) | 1989-02-14 |
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