JPH0475304B2 - - Google Patents
Info
- Publication number
- JPH0475304B2 JPH0475304B2 JP60274486A JP27448685A JPH0475304B2 JP H0475304 B2 JPH0475304 B2 JP H0475304B2 JP 60274486 A JP60274486 A JP 60274486A JP 27448685 A JP27448685 A JP 27448685A JP H0475304 B2 JPH0475304 B2 JP H0475304B2
- Authority
- JP
- Japan
- Prior art keywords
- less
- powder
- magnetic properties
- fine powder
- sintering
- 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
- 229910052799 carbon Inorganic materials 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 10
- 238000005245 sintering Methods 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 8
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims 2
- 150000002910 rare earth metals Chemical class 0.000 claims 1
- 239000000843 powder Substances 0.000 description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 230000006866 deterioration Effects 0.000 description 9
- 230000007423 decrease Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052777 Praseodymium Inorganic materials 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 238000000280 densification Methods 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- -1 B: 99.5% Inorganic materials 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- ZDVYABSQRRRIOJ-UHFFFAOYSA-N boron;iron Chemical compound [Fe]#B ZDVYABSQRRRIOJ-UHFFFAOYSA-N 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 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)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60274486A JPS62133040A (ja) | 1985-12-05 | 1985-12-05 | 希土類永久磁石の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60274486A JPS62133040A (ja) | 1985-12-05 | 1985-12-05 | 希土類永久磁石の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62133040A JPS62133040A (ja) | 1987-06-16 |
| JPH0475304B2 true JPH0475304B2 (de) | 1992-11-30 |
Family
ID=17542356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60274486A Granted JPS62133040A (ja) | 1985-12-05 | 1985-12-05 | 希土類永久磁石の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62133040A (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6481301A (en) * | 1987-09-24 | 1989-03-27 | Daido Steel Co Ltd | Magnetic powder for manufacturing plastic magnet |
| EP0389626B1 (de) * | 1988-06-03 | 1996-11-13 | Mitsubishi Materials Corporation | Gesinterter seltenerdelement-b-fe-magnet und verfahren zur herstellung |
| US5269855A (en) * | 1989-08-25 | 1993-12-14 | Dowa Mining Co., Ltd. | Permanent magnet alloy having improved resistance |
| US5147473A (en) * | 1989-08-25 | 1992-09-15 | Dowa Mining Co., Ltd. | Permanent magnet alloy having improved resistance to oxidation and process for production thereof |
| US5183630A (en) * | 1989-08-25 | 1993-02-02 | Dowa Mining Co., Ltd. | Process for production of permanent magnet alloy having improved resistence to oxidation |
| US5162064A (en) * | 1990-04-10 | 1992-11-10 | Crucible Materials Corporation | Permanent magnet having improved corrosion resistance and method for producing the same |
| JP2731337B2 (ja) * | 1993-03-19 | 1998-03-25 | 日立金属株式会社 | 希土類焼結磁石の製造方法 |
| JP3646009B2 (ja) | 1998-08-28 | 2005-05-11 | 本田技研工業株式会社 | 無段変速機用ベルト |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59215466A (ja) * | 1983-05-21 | 1984-12-05 | Sumitomo Special Metals Co Ltd | 永久磁石材料の製造方法 |
| JPS6012707A (ja) * | 1983-07-01 | 1985-01-23 | Sumitomo Special Metals Co Ltd | 永久磁石材料 |
| JPS6167752A (ja) * | 1984-09-07 | 1986-04-07 | Hitachi Metals Ltd | 永久磁石合金 |
| JPS6169945A (ja) * | 1984-09-14 | 1986-04-10 | Toshiba Corp | 永久磁石合金及び永久磁石の製造方法 |
-
1985
- 1985-12-05 JP JP60274486A patent/JPS62133040A/ja active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59215466A (ja) * | 1983-05-21 | 1984-12-05 | Sumitomo Special Metals Co Ltd | 永久磁石材料の製造方法 |
| JPS6012707A (ja) * | 1983-07-01 | 1985-01-23 | Sumitomo Special Metals Co Ltd | 永久磁石材料 |
| JPS6167752A (ja) * | 1984-09-07 | 1986-04-07 | Hitachi Metals Ltd | 永久磁石合金 |
| JPS6169945A (ja) * | 1984-09-14 | 1986-04-10 | Toshiba Corp | 永久磁石合金及び永久磁石の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62133040A (ja) | 1987-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |