JPS6427204A - Manufacture of permanent magnet - Google Patents
Manufacture of permanent magnetInfo
- Publication number
- JPS6427204A JPS6427204A JP63015164A JP1516488A JPS6427204A JP S6427204 A JPS6427204 A JP S6427204A JP 63015164 A JP63015164 A JP 63015164A JP 1516488 A JP1516488 A JP 1516488A JP S6427204 A JPS6427204 A JP S6427204A
- Authority
- JP
- Japan
- Prior art keywords
- grain size
- average grain
- powder
- metal
- magnetic powder
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000006247 magnetic powder Substances 0.000 abstract 4
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- 229910052751 metal Inorganic materials 0.000 abstract 3
- 239000002184 metal Substances 0.000 abstract 3
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 229910000521 B alloy Inorganic materials 0.000 abstract 1
- 230000002411 adverse Effects 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical group 0.000 abstract 1
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
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0578—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes 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)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
PURPOSE:To obtain a low cost bond magnet having a high coersive force by using a powder consisting of R-Fe-B (R is rare earth metal element) and having a particular average grain size, which has completed heat processing together with reduction agent consisting of metal, as a magnetic powder. CONSTITUTION:As a magnetic powder, the power, consisting of R-Fe-B alloy and having average grain size of 1-100mum, having completed the heat processing together with a reduction agent consisting of metal, is used. This power is then ejected for molding with a binder. The magnetic powder, in this case, has already eliminated adverse effect of oxidation to be applied on the magnetic characteristic by the heat processing together with a reduction agent consisting of metal. Therefore, a bond magnet obtained assures excellent magnetic characteristic. When an average grain size of magnetic powder is 1mum or more, since a specific surface area is small and it is inactive, the oxidation of powder does not proceed easily during manufacture. Moreover, when the average grain size is 100mum or less, field orientation may occur easily. Therefore, sufficient magnetic characteristic may be acquired stably and a low cost bond magnet can be obtained because R-Fe-B material is comparatively cheap.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63015164A JPS6427204A (en) | 1987-04-24 | 1988-01-26 | Manufacture of permanent magnet |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10230787 | 1987-04-24 | ||
JP63015164A JPS6427204A (en) | 1987-04-24 | 1988-01-26 | Manufacture of permanent magnet |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6427204A true JPS6427204A (en) | 1989-01-30 |
Family
ID=26351272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63015164A Pending JPS6427204A (en) | 1987-04-24 | 1988-01-26 | Manufacture of permanent magnet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6427204A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6740707B2 (en) | 2001-01-31 | 2004-05-25 | Toyoda Gosei Co., Ltd. | Fuel system part |
JP2008261003A (en) * | 2007-04-11 | 2008-10-30 | Toda Kogyo Corp | Sm-Fe-N-BASED MAGNETIC PARTICLE POWDER, ITS PRODUCTION METHOD, RESIN COMPOSITION FOR BOND MAGNET CONTAINING THE Sm-Fe-N-BASED MAGNETIC PARTICLE POWDER, AND BOND MAGNET |
-
1988
- 1988-01-26 JP JP63015164A patent/JPS6427204A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6740707B2 (en) | 2001-01-31 | 2004-05-25 | Toyoda Gosei Co., Ltd. | Fuel system part |
JP2008261003A (en) * | 2007-04-11 | 2008-10-30 | Toda Kogyo Corp | Sm-Fe-N-BASED MAGNETIC PARTICLE POWDER, ITS PRODUCTION METHOD, RESIN COMPOSITION FOR BOND MAGNET CONTAINING THE Sm-Fe-N-BASED MAGNETIC PARTICLE POWDER, AND BOND MAGNET |
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