JP5870522B2 - 永久磁石の製造方法 - Google Patents
永久磁石の製造方法 Download PDFInfo
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- JP5870522B2 JP5870522B2 JP2011151740A JP2011151740A JP5870522B2 JP 5870522 B2 JP5870522 B2 JP 5870522B2 JP 2011151740 A JP2011151740 A JP 2011151740A JP 2011151740 A JP2011151740 A JP 2011151740A JP 5870522 B2 JP5870522 B2 JP 5870522B2
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
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- 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
- H01F1/0536—Alloys characterised by their composition containing rare earth metals sintered
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- 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
- H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
- H01F1/0557—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together sintered
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- 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
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- 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
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- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/241—Chemical after-treatment on the surface
- B22F2003/242—Coating
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- B22—CASTING; POWDER METALLURGY
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- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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- Crystallography & Structural Chemistry (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Hard Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Powder Metallurgy (AREA)
Description
本発明者等は、本発明の製造方法で製造された永久磁石(実施例1〜実施例4)と、従来の製造方法で製造された永久磁石(比較例1〜比較例4)を試作し、それぞれの永久磁石の残留磁化と保磁力をVSM(振動試料型磁力計)にて測定した。
本発明者等はさらに、永久磁石内部の酸素量を変化させ、上記する実施例1(酸素量は0.08質量%)と、実施例1と製造方法は同一であって酸素量のみが相違する実施例5〜9の永久磁石を試作し、それらの保磁力を測定した。測定結果を以下の表4と図8に示す。
Claims (6)
- 主相と粒界相からなり、粒界相を形成する主たる金属が第1の金属である金属組織を有する焼結磁石を用意し、この第1の金属よりも酸化物生成標準自由エネルギーの小さな第3の金属を粒界相内に粒界拡散させて中間体を得る第1の工程、
第3の金属よりも酸化物生成標準自由エネルギーが大きくて永久磁石の保磁力を高める第2の金属である、ジスプロシウム、テルビウムもしくはホルミウムのいずれか一種を、前記中間体に粒界拡散させてNd−Fe−B系焼結永久磁石を製造する第2の工程からなる永久磁石の製造方法。 - 前記第2の工程は、前記第2の金属を中間体の表面にスパッタリングで形成し、熱処理することによって粒界拡散させる工程である請求項1に記載の永久磁石の製造方法。
- 前記第2の工程は、第2の金属の蒸気を中間体の表面に当てて粒界拡散させる工程である請求項1に記載の永久磁石の製造方法。
- 前記第1の金属がネオジムもしくはプラセオジムからなる請求項1〜3のいずれかに記載の永久磁石の製造方法。
- 前記第1の金属がネオジムもしくはプラセオジムからなり、
前記第3の金属がイットリウムもしくはスカンジウムのうちのいずれか一種からなる請求項1〜4のいずれかに記載の永久磁石の製造方法。 - 前記永久磁石内の酸素量が0.2質量%以下である請求項1〜5のいずれかに記載の永久磁石の製造方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011151740A JP5870522B2 (ja) | 2010-07-14 | 2011-07-08 | 永久磁石の製造方法 |
US13/808,612 US9281105B2 (en) | 2010-07-14 | 2011-07-13 | Permanent magnet and method of producing permanent magnet |
EP11763759.5A EP2593947B1 (en) | 2010-07-14 | 2011-07-13 | Permanent magnet and method of producing permanent magnet |
CN201180034713.4A CN103003900B (zh) | 2010-07-14 | 2011-07-13 | 永磁体和制造永磁体的方法 |
PCT/IB2011/001636 WO2012007828A1 (en) | 2010-07-14 | 2011-07-13 | Permanent magnet and method of producing permanent magnet |
US14/755,061 US20150302986A1 (en) | 2010-07-14 | 2015-06-30 | Permanent magnet and method of producing permanent magnet |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2010159696 | 2010-07-14 | ||
JP2010159696 | 2010-07-14 | ||
JP2011151740A JP5870522B2 (ja) | 2010-07-14 | 2011-07-08 | 永久磁石の製造方法 |
Publications (2)
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JP2012039100A JP2012039100A (ja) | 2012-02-23 |
JP5870522B2 true JP5870522B2 (ja) | 2016-03-01 |
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JP2011151740A Active JP5870522B2 (ja) | 2010-07-14 | 2011-07-08 | 永久磁石の製造方法 |
Country Status (5)
Country | Link |
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US (2) | US9281105B2 (ja) |
EP (1) | EP2593947B1 (ja) |
JP (1) | JP5870522B2 (ja) |
CN (1) | CN103003900B (ja) |
WO (1) | WO2012007828A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10886062B2 (en) | 2017-12-01 | 2021-01-05 | Hyundai Motor Company | Method for preparing rare-earth permanent magnet |
Families Citing this family (26)
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JP5589667B2 (ja) * | 2010-08-19 | 2014-09-17 | 株式会社豊田中央研究所 | 希土類焼結磁石およびその製造方法 |
EP2800108B1 (en) | 2011-12-27 | 2018-04-11 | Intermetallics Co., Ltd. | Sintered neodymium magnet |
KR101485282B1 (ko) | 2011-12-27 | 2015-01-21 | 인터메탈릭스 가부시키가이샤 | NdFeB계 소결 자석 |
CN103650073B (zh) | 2011-12-27 | 2015-11-25 | 因太金属株式会社 | NdFeB系烧结磁体和该NdFeB系烧结磁体的制造方法 |
US9396851B2 (en) * | 2011-12-27 | 2016-07-19 | Intermetallics Co., Ltd. | NdFeB system sintered magnet |
JP5708581B2 (ja) | 2012-07-09 | 2015-04-30 | トヨタ自動車株式会社 | 割断形成永久磁石及びその製造方法 |
WO2014054163A1 (ja) * | 2012-10-05 | 2014-04-10 | 株式会社 日立製作所 | 焼結磁石及びその製造方法 |
JP6256140B2 (ja) * | 2013-04-22 | 2018-01-10 | Tdk株式会社 | R−t−b系焼結磁石 |
JP6330254B2 (ja) * | 2013-04-22 | 2018-05-30 | Tdk株式会社 | R−t−b系焼結磁石 |
JP5370609B1 (ja) | 2013-04-25 | 2013-12-18 | Tdk株式会社 | R−t−b系永久磁石 |
JP5565498B1 (ja) | 2013-04-25 | 2014-08-06 | Tdk株式会社 | R−t−b系永久磁石 |
JP5565497B1 (ja) * | 2013-04-25 | 2014-08-06 | Tdk株式会社 | R−t−b系永久磁石 |
JP5565499B1 (ja) | 2013-04-25 | 2014-08-06 | Tdk株式会社 | R−t−b系永久磁石 |
JP6142793B2 (ja) * | 2013-12-20 | 2017-06-07 | Tdk株式会社 | 希土類磁石 |
JP6142794B2 (ja) * | 2013-12-20 | 2017-06-07 | Tdk株式会社 | 希土類磁石 |
JP6142792B2 (ja) * | 2013-12-20 | 2017-06-07 | Tdk株式会社 | 希土類磁石 |
TWI526623B (zh) * | 2014-01-27 | 2016-03-21 | 台達電子工業股份有限公司 | 磁石模組以及風扇 |
JP6414597B2 (ja) * | 2014-09-11 | 2018-10-31 | 日立金属株式会社 | R−t−b系焼結磁石の製造方法 |
JP6414598B2 (ja) * | 2014-09-11 | 2018-10-31 | 日立金属株式会社 | R−t−b系焼結磁石の製造方法 |
KR102016615B1 (ko) * | 2017-09-14 | 2019-08-30 | (주)코미코 | 내플라즈마 특성이 향상된 플라즈마 에칭 장치용 부재 및 그 제조 방법 |
JP6950595B2 (ja) * | 2018-03-12 | 2021-10-13 | Tdk株式会社 | R−t−b系永久磁石 |
KR102561239B1 (ko) * | 2018-11-27 | 2023-07-31 | 엘지이노텍 주식회사 | 희토류 자석 제조방법 |
CN110088353B (zh) * | 2018-12-29 | 2021-01-15 | 三环瓦克华(北京)磁性器件有限公司 | 复合镀层、镀膜设备及镀膜方法 |
WO2020155113A1 (zh) * | 2019-02-01 | 2020-08-06 | 天津三环乐喜新材料有限公司 | 稀土扩散磁体的制备方法及稀土扩散磁体 |
WO2022065242A1 (ja) * | 2020-09-23 | 2022-03-31 | 日立金属株式会社 | R-t-b系焼結磁石 |
CN118197728A (zh) * | 2022-12-13 | 2024-06-14 | 烟台正海磁性材料股份有限公司 | R-t-b系永磁材料及其制备方法和应用 |
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JP4747562B2 (ja) | 2004-06-25 | 2011-08-17 | 株式会社日立製作所 | 希土類磁石及びその製造方法、並びに磁石モータ |
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JP4788427B2 (ja) * | 2006-03-23 | 2011-10-05 | 日立金属株式会社 | R−Fe−B系希土類焼結磁石およびその製造方法 |
PL2178096T3 (pl) * | 2007-07-27 | 2016-06-30 | Hitachi Metals Ltd | Spiekany magnes typu R-Fe-B na bazie pierwiastków ziem rzadkich |
JP2009153356A (ja) | 2007-12-25 | 2009-07-09 | Hitachi Ltd | 自己始動式永久磁石同期電動機 |
EP2302646B1 (en) * | 2008-06-13 | 2018-10-31 | Hitachi Metals, Ltd. | R-t-cu-mn-b type sintered magnet |
JP2010114200A (ja) * | 2008-11-05 | 2010-05-20 | Daido Steel Co Ltd | 希土類磁石の製造方法 |
JP5218368B2 (ja) * | 2009-10-10 | 2013-06-26 | 株式会社豊田中央研究所 | 希土類磁石材およびその製造方法 |
JP2011211071A (ja) * | 2010-03-30 | 2011-10-20 | Tdk Corp | 焼結磁石、モーター、自動車、及び焼結磁石の製造方法 |
US9177705B2 (en) * | 2011-05-25 | 2015-11-03 | Tdk Corporation | Sintered rare earth magnet, method of producing the same, and rotating machine |
-
2011
- 2011-07-08 JP JP2011151740A patent/JP5870522B2/ja active Active
- 2011-07-13 EP EP11763759.5A patent/EP2593947B1/en not_active Not-in-force
- 2011-07-13 US US13/808,612 patent/US9281105B2/en not_active Expired - Fee Related
- 2011-07-13 WO PCT/IB2011/001636 patent/WO2012007828A1/en active Application Filing
- 2011-07-13 CN CN201180034713.4A patent/CN103003900B/zh active Active
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2015
- 2015-06-30 US US14/755,061 patent/US20150302986A1/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10886062B2 (en) | 2017-12-01 | 2021-01-05 | Hyundai Motor Company | Method for preparing rare-earth permanent magnet |
Also Published As
Publication number | Publication date |
---|---|
CN103003900B (zh) | 2016-11-09 |
WO2012007828A1 (en) | 2012-01-19 |
US20130135069A1 (en) | 2013-05-30 |
CN103003900A (zh) | 2013-03-27 |
EP2593947B1 (en) | 2015-09-23 |
EP2593947A1 (en) | 2013-05-22 |
JP2012039100A (ja) | 2012-02-23 |
US20150302986A1 (en) | 2015-10-22 |
US9281105B2 (en) | 2016-03-08 |
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