JPH0568841B2 - - Google Patents
Info
- Publication number
- JPH0568841B2 JPH0568841B2 JP59251544A JP25154484A JPH0568841B2 JP H0568841 B2 JPH0568841 B2 JP H0568841B2 JP 59251544 A JP59251544 A JP 59251544A JP 25154484 A JP25154484 A JP 25154484A JP H0568841 B2 JPH0568841 B2 JP H0568841B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic properties
- magnet
- sintering
- sintering temperature
- decrease
- 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.)
- Expired - Lifetime
Links
- 230000005291 magnetic effect Effects 0.000 claims description 24
- 238000005245 sintering Methods 0.000 claims description 23
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 229910052684 Cerium Inorganic materials 0.000 claims description 6
- 229910052779 Neodymium Inorganic materials 0.000 claims description 6
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- 229910052723 transition metal Inorganic materials 0.000 claims description 4
- 150000003624 transition metals Chemical group 0.000 claims description 4
- 150000002910 rare earth metals Chemical class 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 17
- 230000007423 decrease Effects 0.000 description 12
- 239000000843 powder Substances 0.000 description 8
- 229910052796 boron Inorganic materials 0.000 description 6
- 230000005347 demagnetization Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 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
- H01F1/0577—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 sintered
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59251544A JPS61147504A (ja) | 1984-11-30 | 1984-11-30 | 希土類磁石 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59251544A JPS61147504A (ja) | 1984-11-30 | 1984-11-30 | 希土類磁石 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61147504A JPS61147504A (ja) | 1986-07-05 |
| JPH0568841B2 true JPH0568841B2 (de) | 1993-09-29 |
Family
ID=17224402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59251544A Granted JPS61147504A (ja) | 1984-11-30 | 1984-11-30 | 希土類磁石 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61147504A (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6966953B2 (en) * | 2002-04-29 | 2005-11-22 | University Of Dayton | Modified sintered RE-Fe-B-type, rare earth permanent magnets with improved toughness |
| US6994755B2 (en) * | 2002-04-29 | 2006-02-07 | University Of Dayton | Method of improving toughness of sintered RE-Fe-B-type, rare earth permanent magnets |
| JP2013191616A (ja) * | 2012-03-12 | 2013-09-26 | Nitto Denko Corp | 希土類永久磁石及び希土類永久磁石の製造方法 |
| CN103041905A (zh) * | 2012-12-28 | 2013-04-17 | 攀钢集团攀枝花钢铁研究院有限公司 | 一种碳化渣的破磨方法及系统 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5989401A (ja) * | 1982-11-15 | 1984-05-23 | Sumitomo Special Metals Co Ltd | 永久磁石 |
-
1984
- 1984-11-30 JP JP59251544A patent/JPS61147504A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5989401A (ja) * | 1982-11-15 | 1984-05-23 | Sumitomo Special Metals Co Ltd | 永久磁石 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61147504A (ja) | 1986-07-05 |
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