CN1212625C - 稀土磁体用烧结压制体的制备方法 - Google Patents
稀土磁体用烧结压制体的制备方法 Download PDFInfo
- Publication number
- CN1212625C CN1212625C CNB02800504XA CN02800504A CN1212625C CN 1212625 C CN1212625 C CN 1212625C CN B02800504X A CNB02800504X A CN B02800504XA CN 02800504 A CN02800504 A CN 02800504A CN 1212625 C CN1212625 C CN 1212625C
- Authority
- CN
- China
- Prior art keywords
- rare earth
- fine powder
- powder
- sintered body
- alloy
- 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
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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
- H01F1/0573—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 obtained by reduction or by hydrogen decrepitation or embrittlement
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0293—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Hard Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Description
| 样品 | 合金块质量(g)(尺寸:mm×mm×mm) | 烧结密度(g/cm3) | 剩磁Br(T) | 矫顽力iHc(kA/m) |
| 1 | 250(40×30×28) | 7.42 | 1.15 | 1476 |
| 2 | 100(30×30×15) | 7.48 | 1.16 | 1496 |
| 3 | 70(30×28×11) | 7.55 | 1.17 | 1515 |
| 4 | 50(25×24×11) | 7.55 | 1.17 | 1560 |
| 5 | 25(20×20×8) | 7.55 | 1.17 | 1576 |
| 6 | --- | 7.55 | 1.17 | 1578 |
| 样品 | R(Nd+Pr) | Dy | Co | B | Al | Cu | O | C |
| 第一细粉 | 29.2 | 2.6 | 0.9 | 1.0 | 0.2 | 0.1 | 6200ppm | 550ppm |
| 第二细粉 | 28.5 | 3.3 | 0.9 | 1.1 | 0.3 | 0.15 | 5000ppm | 450ppm |
| 混合比 | 烧结密度(g/cm3) | 剩磁Br(T) | 矫顽力iHc(kA/m) |
| 15质量% | 7.51 | 1.15 | 1498 |
| 10质量% | 7.53 | 1.17 | 1561 |
| 5质量% | 7.55 | 1.17 | 1576 |
| 0% | 7.55 | 1.17 | 1578 |
Claims (10)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP163401/2001 | 2001-05-30 | ||
| JP2001163401 | 2001-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1457497A CN1457497A (zh) | 2003-11-19 |
| CN1212625C true CN1212625C (zh) | 2005-07-27 |
Family
ID=19006380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB02800504XA Expired - Lifetime CN1212625C (zh) | 2001-05-30 | 2002-05-28 | 稀土磁体用烧结压制体的制备方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7056393B2 (zh) |
| CN (1) | CN1212625C (zh) |
| DE (1) | DE10291720T5 (zh) |
| WO (1) | WO2002099823A1 (zh) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7201810B2 (en) * | 2001-03-30 | 2007-04-10 | Neomax Co., Ltd. | Rare earth alloy sintered compact and method of making the same |
| DE10296960T5 (de) * | 2001-06-22 | 2004-04-22 | Sumitomo Special Metals Co., Ltd. | Seltenerdmetall-Magnet und Verfahren zu seiner Herstellung |
| US7618497B2 (en) * | 2003-06-30 | 2009-11-17 | Tdk Corporation | R-T-B based rare earth permanent magnet and method for production thereof |
| EP1792930B1 (en) * | 2004-08-10 | 2013-02-13 | Idemitsu Technofine Co. Ltd | Modified powder, fluid composition containing said modified powder, formed article, and method for producing modified powder |
| JP4743211B2 (ja) * | 2005-12-02 | 2011-08-10 | 日立金属株式会社 | 希土類焼結磁石及びその製造方法 |
| CN100454449C (zh) * | 2006-04-24 | 2009-01-21 | 严高林 | 退化稀土永磁材料再生高性能永磁体的方法 |
| DE112008000992B4 (de) * | 2007-04-13 | 2024-07-25 | Hitachi, Ltd. | Verfahren zur Herstellung eines R-T-B-Sintermagneten |
| CN101952915A (zh) * | 2008-02-20 | 2011-01-19 | 株式会社爱发科 | 废磁体的再生方法 |
| CN102822915B (zh) * | 2010-03-31 | 2016-03-16 | 日立金属株式会社 | 浆液的再生方法、稀土类烧结磁铁的制造方法以及浆液再生装置 |
| US10770207B2 (en) * | 2012-03-12 | 2020-09-08 | Nitto Denko Corporation | Rare-earth permanent magnet and method for manufacturing rare-earth permanent magnet |
| WO2014017249A1 (ja) | 2012-07-24 | 2014-01-30 | インターメタリックス株式会社 | NdFeB系焼結磁石の製造方法 |
| JP6005263B2 (ja) * | 2013-04-24 | 2016-10-12 | 和歌山レアアース株式会社 | R−t−b系磁石用原料合金 |
| WO2014205002A2 (en) | 2013-06-17 | 2014-12-24 | Miha Zakotnik | Magnet recycling to create nd-fe-b magnets with improved or restored magnetic performance |
| CN103377820B (zh) | 2013-07-17 | 2015-11-25 | 烟台首钢磁性材料股份有限公司 | 一种r-t-b-m系烧结磁体及其制造方法 |
| JP5924335B2 (ja) | 2013-12-26 | 2016-05-25 | トヨタ自動車株式会社 | 希土類磁石とその製造方法 |
| JP6380738B2 (ja) * | 2014-04-21 | 2018-08-29 | Tdk株式会社 | R−t−b系永久磁石、r−t−b系永久磁石用原料合金 |
| CN103996519B (zh) * | 2014-05-11 | 2016-07-06 | 沈阳中北通磁科技股份有限公司 | 一种高性能钕铁硼稀土永磁器件的制造方法 |
| DE102014213723A1 (de) * | 2014-07-15 | 2016-01-21 | Siemens Aktiengesellschaft | Verfahren zur Herstellung eines anisotropen weichmagnetischen Materialkörpers und dessen Verwendung |
| US9336932B1 (en) | 2014-08-15 | 2016-05-10 | Urban Mining Company | Grain boundary engineering |
| JP2016076614A (ja) * | 2014-10-07 | 2016-05-12 | トヨタ自動車株式会社 | 希土類磁石の製造方法 |
| JP6205511B2 (ja) * | 2015-01-09 | 2017-09-27 | インターメタリックス株式会社 | RFeB系焼結磁石の製造方法 |
| DE102016216355A1 (de) | 2016-08-30 | 2018-03-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zum Recycling von Permanentmagneten durch Schmelzen und Rascherstarren |
| FR3133700A1 (fr) * | 2022-03-16 | 2023-09-22 | Commissariat à l'Energie Atomique et aux Energies Alternatives | Procédé de fabrication d’un aimant à partir d’aimants recyclés |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1316375C (en) * | 1982-08-21 | 1993-04-20 | Masato Sagawa | Magnetic materials and permanent magnets |
| US4792368A (en) * | 1982-08-21 | 1988-12-20 | Sumitomo Special Metals Co., Ltd. | Magnetic materials and permanent magnets |
| JPH066728B2 (ja) | 1986-07-24 | 1994-01-26 | 住友特殊金属株式会社 | 永久磁石材料用原料粉末の製造方法 |
| US5091020A (en) * | 1990-11-20 | 1992-02-25 | Crucible Materials Corporation | Method and particle mixture for making rare earth element, iron and boron permanent sintered magnets |
| JPH0696928A (ja) * | 1992-06-30 | 1994-04-08 | Aichi Steel Works Ltd | 希土類焼結磁石及びその製造方法 |
| US5624503A (en) * | 1992-12-24 | 1997-04-29 | Matsushita Electric Industrial Co., Ltd. | Process for producing Nd-Fe-B magnet |
| JP2746818B2 (ja) | 1993-06-02 | 1998-05-06 | 信越化学工業株式会社 | 希土類焼結永久磁石の製造方法 |
| US5908513A (en) * | 1996-04-10 | 1999-06-01 | Showa Denko K.K. | Cast alloy used for production of rare earth magnet and method for producing cast alloy and magnet |
| JP3549382B2 (ja) * | 1997-12-22 | 2004-08-04 | 信越化学工業株式会社 | 希土類元素・鉄・ボロン系永久磁石およびその製造方法 |
| JPH11329811A (ja) * | 1998-05-18 | 1999-11-30 | Sumitomo Special Metals Co Ltd | R−Fe−B系磁石用原料粉末並びにR−Fe−B系磁石の製造方法 |
| DE69911138T2 (de) * | 1998-10-14 | 2004-07-22 | Hitachi Metals, Ltd. | Gesinterter R-T-B-Dauermagnet |
| JP3231034B1 (ja) * | 2000-05-09 | 2001-11-19 | 住友特殊金属株式会社 | 希土類磁石およびその製造方法 |
| ATE555485T1 (de) * | 2001-01-30 | 2012-05-15 | Hitachi Metals Ltd | Verfahren zur herstellung eines permanentmagneten |
-
2002
- 2002-05-28 DE DE10291720T patent/DE10291720T5/de not_active Withdrawn
- 2002-05-28 CN CNB02800504XA patent/CN1212625C/zh not_active Expired - Lifetime
- 2002-05-28 US US10/381,007 patent/US7056393B2/en not_active Expired - Lifetime
- 2002-05-28 WO PCT/JP2002/005171 patent/WO2002099823A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN1457497A (zh) | 2003-11-19 |
| DE10291720T5 (de) | 2004-08-05 |
| WO2002099823A1 (en) | 2002-12-12 |
| US7056393B2 (en) | 2006-06-06 |
| US20040020563A1 (en) | 2004-02-05 |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| ASS | Succession or assignment of patent right |
Owner name: HITACHI METALS, LTD. Free format text: FORMER OWNER: SUMITOMO SPEC METALS Effective date: 20130520 |
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Effective date of registration: 20130520 Address after: Tokyo, Japan Patentee after: HITACHI METALS, Ltd. Address before: Osaka City, Osaka of Japan Patentee before: Neomax Co.,Ltd. |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20031119 Assignee: BEIJING JINGCI MAGNET Co.,Ltd. Assignor: HITACHI METALS, Ltd. Contract record no.: 2013990000374 Denomination of invention: Method of making sintered compact for rare earth magnet Granted publication date: 20050727 License type: Common License Record date: 20130703 Application publication date: 20031119 Assignee: ADVANCED TECHNOLOGY & MATERIALS Co.,Ltd. Assignor: HITACHI METALS, Ltd. Contract record no.: 2013990000365 Denomination of invention: Method of making sintered compact for rare earth magnet Granted publication date: 20050727 License type: Common License Record date: 20130701 Application publication date: 20031119 Assignee: BEIJING ZHONG KE SAN HUAN HI-TECH Co.,Ltd. Assignor: HITACHI METALS, Ltd. Contract record no.: 2013990000364 Denomination of invention: Method of making sintered compact for rare earth magnet Granted publication date: 20050727 License type: Common License Record date: 20130701 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
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Application publication date: 20031119 Assignee: NINGBO YUNSHENG Co.,Ltd. Assignor: HITACHI METALS, Ltd. Contract record no.: 2014990000031 Denomination of invention: Method of making sintered compact for rare earth magnet Granted publication date: 20050727 License type: Common License Record date: 20140114 |
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Address after: Japan Tokyo port harbor 2 chome No. 70 Patentee after: HITACHI METALS, Ltd. Address before: Tokyo, Japan Patentee before: HITACHI METALS, Ltd. |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20031119 Assignee: Hitachi metal ring Ci material (Nantong) Co.,Ltd. Assignor: HITACHI METALS, Ltd. Contract record no.: 2017990000034 Denomination of invention: Method of making sintered compact for rare earth magnet Granted publication date: 20050727 License type: Common License Record date: 20170209 |
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| CI03 | Correction of invention patent |
Correction item: A transferee of the entry into force of the contract Correct: Hitachi metal ring magnets (Nantong) Co. Ltd. False: Hitachi metal ring Ci material (Nantong) Co. Ltd. Number: 11 Volume: 33 |
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Granted publication date: 20050727 |
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