CN103189943B - 稀土磁体的制备方法 - Google Patents

稀土磁体的制备方法 Download PDF

Info

Publication number
CN103189943B
CN103189943B CN201180049051.8A CN201180049051A CN103189943B CN 103189943 B CN103189943 B CN 103189943B CN 201180049051 A CN201180049051 A CN 201180049051A CN 103189943 B CN103189943 B CN 103189943B
Authority
CN
China
Prior art keywords
rare earth
earth magnet
heat treatment
temperature
grain boundary
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 - Fee Related
Application number
CN201180049051.8A
Other languages
English (en)
Chinese (zh)
Other versions
CN103189943A (zh
Inventor
佐久间纪次
岸本秀史
加藤晃
庄司哲也
多米尼克·吉沃尔
诺拉·登普西
托马斯·格奥尔格·伍德科克
奥利弗·古特弗莱施
吉诺·赫尔卡克
托马斯·施雷弗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LEIBNIZ INSTITUTE FOR SOLID STATE AND MATERIALS RESEARCH DRESDEN
Centre National de la Recherche Scientifique CNRS
University of Sheffield
Toyota Motor Corp
Original Assignee
LEIBNIZ INSTITUTE FOR SOLID STATE AND MATERIALS RESEARCH DRESDEN
Centre National de la Recherche Scientifique CNRS
University of Sheffield
Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LEIBNIZ INSTITUTE FOR SOLID STATE AND MATERIALS RESEARCH DRESDEN, Centre National de la Recherche Scientifique CNRS, University of Sheffield, Toyota Motor Corp filed Critical LEIBNIZ INSTITUTE FOR SOLID STATE AND MATERIALS RESEARCH DRESDEN
Publication of CN103189943A publication Critical patent/CN103189943A/zh
Application granted granted Critical
Publication of CN103189943B publication Critical patent/CN103189943B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01F41/0273—Imparting anisotropy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • 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
    • 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
    • H01F41/005—Impregnating or encapsulating
    • 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
    • H01F41/32—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 applying conductive, insulating or magnetic material on a magnetic film, specially adapted for a thin magnetic film
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties
    • C22C2202/02—Magnetic
    • 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
    • H01F1/0576—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 pressed, e.g. hot working
    • 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
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/12—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
    • H01F10/126—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys containing rare earth metals

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Powder Metallurgy (AREA)
CN201180049051.8A 2010-10-25 2011-05-13 稀土磁体的制备方法 Expired - Fee Related CN103189943B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10306166.9A EP2444985B1 (en) 2010-10-25 2010-10-25 Production method of rare earth magnet
EP10306166.9 2010-10-25
PCT/JP2011/061608 WO2012056755A1 (en) 2010-10-25 2011-05-13 Production method of rare earth magnet

Publications (2)

Publication Number Publication Date
CN103189943A CN103189943A (zh) 2013-07-03
CN103189943B true CN103189943B (zh) 2016-05-04

Family

ID=43272396

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201180049051.8A Expired - Fee Related CN103189943B (zh) 2010-10-25 2011-05-13 稀土磁体的制备方法

Country Status (5)

Country Link
US (1) US9520230B2 (enExample)
EP (1) EP2444985B1 (enExample)
JP (1) JP5933535B2 (enExample)
CN (1) CN103189943B (enExample)
WO (1) WO2012056755A1 (enExample)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104011811B (zh) * 2012-01-04 2016-11-02 丰田自动车株式会社 稀土类纳米复合磁铁
US10234410B2 (en) 2012-03-12 2019-03-19 Massachusetts Institute Of Technology Stable binary nanocrystalline alloys and methods of identifying same
JP6649876B2 (ja) 2013-03-14 2020-02-19 マサチューセッツ インスティテュート オブ テクノロジー 焼結されたナノ結晶合金
KR20150033423A (ko) * 2013-09-24 2015-04-01 엘지전자 주식회사 열간가압성형 공정을 이용한 이방성 열간가압성형 자석의 제조방법 및 이 방법으로 제조된 열간가압성형 자석
JP5915637B2 (ja) 2013-12-19 2016-05-11 トヨタ自動車株式会社 希土類磁石の製造方法
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
KR101868763B1 (ko) * 2014-10-27 2018-06-18 제이엑스금속주식회사 희토류 박막 자석 및 그 제조 방법
US11644288B2 (en) 2015-09-17 2023-05-09 Massachusetts Institute Of Technology Nanocrystalline alloy penetrators
JP6848735B2 (ja) * 2016-07-15 2021-03-24 Tdk株式会社 Ｒ−ｔ−ｂ系希土類永久磁石
JP6604321B2 (ja) * 2016-12-27 2019-11-13 トヨタ自動車株式会社 希土類磁石の製造方法
US11167422B2 (en) 2017-03-30 2021-11-09 Soft Robotics, Inc. User-assisted robotic control systems
CN109979743B (zh) * 2017-12-27 2022-03-04 宁波科宁达工业有限公司 一种钕铁硼磁体晶界扩散的方法及稀土磁体
JP7110662B2 (ja) * 2018-03-28 2022-08-02 Tdk株式会社 Ｒ‐ｔ‐ｂ系焼結磁石
US11004600B2 (en) 2018-06-19 2021-05-11 Ford Global Technologies, Llc Permanent magnet and method of making permanent magnet
CN112053824B (zh) * 2019-06-05 2023-08-22 中国科学院宁波材料技术与工程研究所 一种烧结钕铁硼永磁体及其制备方法
WO2021039763A1 (ja) * 2019-08-26 2021-03-04 日本電産株式会社 モータ、駆動システム、掃除機、無人飛行体、電動航空機
CN112908667B (zh) * 2020-06-29 2022-07-15 京磁材料科技股份有限公司 稀土永磁体的晶界扩散方法
CN115728684B (zh) * 2022-11-17 2025-11-25 杭州美磁科技有限公司 通过磁场分布识别晶界扩散钕铁硼磁体不可逆退磁的方法
CN116230346B (zh) 2023-02-16 2023-08-22 四川大学 一种各向异性纳米晶稀土永磁体及制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055142A (en) * 1986-05-23 1991-10-08 Centre National De La Recherche Scientifique Process for preparing permanent magnets by division of crystals
CN1363101A (zh) * 2000-02-22 2002-08-07 住友特殊金属株式会社 永久磁铁薄膜及其制造方法
CN1447354A (zh) * 1998-03-23 2003-10-08 住友特殊金属株式会社 永久磁体和r－tm－b系永久磁体
CN1461486A (zh) * 2001-05-15 2003-12-10 住友特殊金属株式会社 铁基稀土合金纳米复合磁体及其制造方法
CN1735947A (zh) * 2002-05-24 2006-02-15 代顿大学 纳米晶态和纳米复合稀土永磁体材料及其制造方法
CN101640087A (zh) * 2008-07-04 2010-02-03 大同特殊钢株式会社 稀土磁体及其制造方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5405455A (en) 1991-06-04 1995-04-11 Shin-Etsu Chemical Co. Ltd. Rare earth-based permanent magnet
JP2853839B2 (ja) 1991-06-04 1999-02-03 信越化学工業株式会社 希土類永久磁石の製造方法
JP2853838B2 (ja) 1991-06-04 1999-02-03 信越化学工業株式会社 希土類永久磁石の製造方法
US6287391B1 (en) * 1997-06-26 2001-09-11 Sumitomo Special Metals Co., Ltd. Method of producing laminated permanent magnet
US20040025974A1 (en) 2002-05-24 2004-02-12 Don Lee Nanocrystalline and nanocomposite rare earth permanent magnet materials and method of making the same
EP1744328B1 (en) * 2005-06-10 2012-07-25 Nissan Motor Co., Ltd. Rare earth magnet having high strength and high electrical resistance
KR101378090B1 (ko) 2007-05-02 2014-03-27 히다찌긴조꾸가부시끼가이사 Ｒ－ｔ－ｂ계 소결 자석
US20100261038A1 (en) * 2007-11-02 2010-10-14 Nobuyoshi Imaoka Composite magnetic material for magnet and method for manufacturing such material
EP2099039A1 (en) 2008-02-29 2009-09-09 Daido Steel Co.,Ltd. Material for magnetic anisotropic magnet
JP5532745B2 (ja) 2009-08-21 2014-06-25 大同特殊鋼株式会社 磁気異方性磁石及びその製造方法
CN104143402B (zh) * 2009-01-07 2017-05-24 大同特殊钢株式会社 磁各向异性磁体原材料
JP5692231B2 (ja) 2010-07-16 2015-04-01 トヨタ自動車株式会社 希土類磁石の製造方法、及び希土類磁石

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055142A (en) * 1986-05-23 1991-10-08 Centre National De La Recherche Scientifique Process for preparing permanent magnets by division of crystals
CN1447354A (zh) * 1998-03-23 2003-10-08 住友特殊金属株式会社 永久磁体和r－tm－b系永久磁体
CN1363101A (zh) * 2000-02-22 2002-08-07 住友特殊金属株式会社 永久磁铁薄膜及其制造方法
CN1461486A (zh) * 2001-05-15 2003-12-10 住友特殊金属株式会社 铁基稀土合金纳米复合磁体及其制造方法
CN1735947A (zh) * 2002-05-24 2006-02-15 代顿大学 纳米晶态和纳米复合稀土永磁体材料及其制造方法
CN101640087A (zh) * 2008-07-04 2010-02-03 大同特殊钢株式会社 稀土磁体及其制造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Growth and characterization of NdFeB thin films;L.Castaldi et al;《Journal of Magnetism and Magnetic Materials》;20020430;第242-245卷;1284-1286 *

Also Published As

Publication number Publication date
EP2444985B1 (en) 2018-07-11
JP5933535B2 (ja) 2016-06-08
WO2012056755A1 (en) 2012-05-03
US20130248754A1 (en) 2013-09-26
JP2014502034A (ja) 2014-01-23
EP2444985A1 (en) 2012-04-25
US9520230B2 (en) 2016-12-13
CN103189943A (zh) 2013-07-03

Similar Documents

Publication Publication Date Title
CN103189943B (zh) 稀土磁体的制备方法
JP5304907B2 (ja) Ｒ−Ｆｅ−Ｂ系微細結晶高密度磁石
CN107871581B (zh) 制备R-Fe-B烧结磁体的方法
TWI673730B (zh) Ｒ－Ｆｅ－Ｂ系燒結磁石及其製造方法
CN107871582B (zh) R-Fe-B烧结磁体
CN103295713B (zh) R－Fe－B类稀土烧结磁铁
CN102639266B (zh) 磁石用粉末
JP4591633B2 (ja) ナノコンポジットバルク磁石およびその製造方法
JP5692231B2 (ja) 希土類磁石の製造方法、及び希土類磁石
JP5218869B2 (ja) 希土類−鉄−窒素系合金材、希土類−鉄−窒素系合金材の製造方法、希土類−鉄系合金材、及び希土類−鉄系合金材の製造方法
JP6037128B2 (ja) Ｒ−ｔ−ｂ系希土類磁石粉末、ｒ−ｔ−ｂ系希土類磁石粉末の製造方法、及びボンド磁石
CN103946931A (zh) 稀土磁体制造方法
JPWO2009016815A1 (ja) Ｒ−Ｆｅ−Ｂ系希土類焼結磁石
JP5708242B2 (ja) 希土類磁石の製造方法
JP2009302318A (ja) ＲＬ−ＲＨ−Ｔ−Ｍｎ−Ｂ系焼結磁石
EP1479787B1 (en) Sinter magnet made from rare earth-iron-boron alloy powder for magnet
JP2024023206A (ja) 異方性希土類焼結磁石及びその製造方法
JP7401479B2 (ja) 希土類異方性磁石粉末およびその製造方法
US11915861B2 (en) Method for manufacturing rare earth permanent magnet
CN107077940A (zh) 不含重稀土元素的基于r‑fe‑b的烧结磁体及其制备方法
EP2980815A1 (en) Sintered magnet production method
JP2013098319A (ja) Ｎｄ−Ｆｅ−Ｂ系磁石の製造方法
JP7017757B2 (ja) 希土類永久磁石

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160504

CF01 Termination of patent right due to non-payment of annual fee