DE3928389C2 - - Google Patents
Info
- Publication number
- DE3928389C2 DE3928389C2 DE3928389A DE3928389A DE3928389C2 DE 3928389 C2 DE3928389 C2 DE 3928389C2 DE 3928389 A DE3928389 A DE 3928389A DE 3928389 A DE3928389 A DE 3928389A DE 3928389 C2 DE3928389 C2 DE 3928389C2
- Authority
- DE
- Germany
- Prior art keywords
- rare earth
- permanent magnet
- magnetic
- proportion
- alloy 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.)
- Revoked
Links
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 21
- 150000002910 rare earth metals Chemical class 0.000 claims description 21
- 229910045601 alloy Inorganic materials 0.000 claims description 20
- 239000000956 alloy Substances 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 17
- 229910052799 carbon Inorganic materials 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- 229910052723 transition metal Inorganic materials 0.000 claims description 13
- 150000003624 transition metals Chemical class 0.000 claims description 13
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 239000007858 starting material Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052735 hafnium Inorganic materials 0.000 claims description 2
- 229910052745 lead Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 229910002546 FeCo Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 2
- 229910017112 Fe—C Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910021386 carbon form Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization 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
- H01F1/058—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IVa elements, e.g. Gd2Fe14C
-
- 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)
- Powder Metallurgy (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3928389A DE3928389A1 (de) | 1989-08-28 | 1989-08-28 | Permanentmagnet |
| DE90912788T DE59004054D1 (de) | 1989-08-28 | 1990-08-27 | Permanentmagnet. |
| JP2512098A JPH05500134A (ja) | 1989-08-28 | 1990-08-27 | 永久磁石 |
| EP90912788A EP0489784B1 (de) | 1989-08-28 | 1990-08-27 | Permanentmagnet |
| AT90912788T ATE99450T1 (de) | 1989-08-28 | 1990-08-27 | Permanentmagnet. |
| PCT/DE1990/000653 WO1991003823A1 (de) | 1989-08-28 | 1990-08-27 | Permanentmagnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3928389A DE3928389A1 (de) | 1989-08-28 | 1989-08-28 | Permanentmagnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3928389A1 DE3928389A1 (de) | 1991-03-14 |
| DE3928389C2 true DE3928389C2 (enrdf_load_stackoverflow) | 1993-01-07 |
Family
ID=6388032
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3928389A Granted DE3928389A1 (de) | 1989-08-28 | 1989-08-28 | Permanentmagnet |
| DE90912788T Expired - Fee Related DE59004054D1 (de) | 1989-08-28 | 1990-08-27 | Permanentmagnet. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE90912788T Expired - Fee Related DE59004054D1 (de) | 1989-08-28 | 1990-08-27 | Permanentmagnet. |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0489784B1 (enrdf_load_stackoverflow) |
| JP (1) | JPH05500134A (enrdf_load_stackoverflow) |
| DE (2) | DE3928389A1 (enrdf_load_stackoverflow) |
| WO (1) | WO1991003823A1 (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US5403408A (en) * | 1992-10-19 | 1995-04-04 | Inland Steel Company | Non-uniaxial permanent magnet material |
| AU2001275775A1 (en) * | 2000-08-03 | 2002-02-18 | Sanei Kasei Co., Limited | Nanocomposite permanent magnet |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1316375C (en) * | 1982-08-21 | 1993-04-20 | Masato Sagawa | Magnetic materials and permanent magnets |
| JPS59132105A (ja) * | 1983-01-19 | 1984-07-30 | Sumitomo Special Metals Co Ltd | 永久磁石用合金 |
| DE3379084D1 (en) * | 1982-09-27 | 1989-03-02 | Sumitomo Spec Metals | Permanently magnetizable alloys, magnetic materials and permanent magnets comprising febr or (fe,co)br (r=vave earth) |
| JP2537189B2 (ja) * | 1985-10-25 | 1996-09-25 | 株式会社東芝 | 永久磁石 |
| DE3637521A1 (de) * | 1986-11-04 | 1988-05-11 | Schramberg Magnetfab | Permanentmagnet und verfahren zu seiner herstellung |
| US4849035A (en) * | 1987-08-11 | 1989-07-18 | Crucible Materials Corporation | Rare earth, iron carbon permanent magnet alloys and method for producing the same |
| NL8800740A (nl) * | 1987-12-11 | 1989-07-03 | Philips Nv | Hardmagnetisch materiaal uit een zeldzame aardmetaal, ijzer en koolstof. |
| JPH01169904A (ja) * | 1987-12-24 | 1989-07-05 | Taiyo Yuden Co Ltd | 永久磁石およびその製造方法 |
-
1989
- 1989-08-28 DE DE3928389A patent/DE3928389A1/de active Granted
-
1990
- 1990-08-27 JP JP2512098A patent/JPH05500134A/ja active Pending
- 1990-08-27 EP EP90912788A patent/EP0489784B1/de not_active Expired - Lifetime
- 1990-08-27 WO PCT/DE1990/000653 patent/WO1991003823A1/de active IP Right Grant
- 1990-08-27 DE DE90912788T patent/DE59004054D1/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05500134A (ja) | 1993-01-14 |
| EP0489784A1 (de) | 1992-06-17 |
| EP0489784B1 (de) | 1993-12-29 |
| DE59004054D1 (de) | 1994-02-10 |
| WO1991003823A1 (de) | 1991-03-21 |
| DE3928389A1 (de) | 1991-03-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8381 | Inventor (new situation) |
Free format text: GAIFFI, SEVI, 7234 AICHHALDEN, DE |
|
| 8363 | Opposition against the patent | ||
| 8331 | Complete revocation | ||
| 8325 | Change of the main classification |
Ipc: H01F 1/055 |