EP2721618A4 - Neodymium/iron/boron-based permanent magnet - Google Patents

Neodymium/iron/boron-based permanent magnet

Info

Publication number
EP2721618A4
EP2721618A4 EP12800074.2A EP12800074A EP2721618A4 EP 2721618 A4 EP2721618 A4 EP 2721618A4 EP 12800074 A EP12800074 A EP 12800074A EP 2721618 A4 EP2721618 A4 EP 2721618A4
Authority
EP
European Patent Office
Prior art keywords
neodymium
boron
iron
permanent magnet
based permanent
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.)
Ceased
Application number
EP12800074.2A
Other languages
German (de)
French (fr)
Other versions
EP2721618A1 (en
Inventor
Renjie Chen
Aru Yan
Don Lee
Guanghui Yan
Youhao Liu
Alexandra Wilde
Peter Barth
Jiaqing Yu
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.)
Ningbo Institute of Material Technology and Engineering of CAS
Robert Bosch GmbH
Original Assignee
Ningbo Institute of Material Technology and Engineering of CAS
Robert Bosch GmbH
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 Ningbo Institute of Material Technology and Engineering of CAS, Robert Bosch GmbH filed Critical Ningbo Institute of Material Technology and Engineering of CAS
Publication of EP2721618A1 publication Critical patent/EP2721618A1/en
Publication of EP2721618A4 publication Critical patent/EP2721618A4/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • 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
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • 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
    • H01F41/0273—Imparting anisotropy
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
EP12800074.2A 2011-06-17 2012-06-15 Neodymium/iron/boron-based permanent magnet Ceased EP2721618A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110172170.4A CN102832003A (en) 2011-06-17 2011-06-17 Neodymium/ferrum/boron permanent magnet
PCT/CN2012/077023 WO2012171490A1 (en) 2011-06-17 2012-06-15 Neodymium/iron/boron-based permanent magnet

Publications (2)

Publication Number Publication Date
EP2721618A1 EP2721618A1 (en) 2014-04-23
EP2721618A4 true EP2721618A4 (en) 2015-07-08

Family

ID=47335092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12800074.2A Ceased EP2721618A4 (en) 2011-06-17 2012-06-15 Neodymium/iron/boron-based permanent magnet

Country Status (3)

Country Link
EP (1) EP2721618A4 (en)
CN (1) CN102832003A (en)
WO (1) WO2012171490A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101543111B1 (en) * 2013-12-17 2015-08-10 현대자동차주식회사 NdFeB PERMANENT MAGNET AND METHOD FOR PRODUCING THE SAME
CN106964778A (en) * 2016-01-14 2017-07-21 罗伯特·博世有限公司 The method and apparatus for producing heat distortion magnet
JP2020095991A (en) * 2017-03-30 2020-06-18 Tdk株式会社 Sintered magnet abd rotary machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0430278A1 (en) * 1989-12-01 1991-06-05 Sumitomo Special Metals Co., Ltd. Rare earth-iron-boron permanent magnet
JP2000188213A (en) * 1998-10-14 2000-07-04 Hitachi Metals Ltd R-t-b sintered permanent magnet
EP1961506A1 (en) * 2005-12-02 2008-08-27 Hitachi Metals, Ltd. Rare earth sintered magnet and method for producing same
CN101859639A (en) * 2010-07-06 2010-10-13 烟台正海磁性材料股份有限公司 R-Fe-B series magnet of gradient resistance and production method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100592471B1 (en) * 1998-10-14 2006-06-23 히다찌긴조꾸가부시끼가이사 R-T-B type sintered permanent magnet
US7199690B2 (en) * 2003-03-27 2007-04-03 Tdk Corporation R-T-B system rare earth permanent magnet
EP1749599B1 (en) * 2004-04-30 2015-09-09 Hitachi Metals, Ltd. Methods for producing raw material alloy for rare earth magnet, powder and sintered magnet
CN101740190B (en) * 2008-11-26 2013-01-16 绵阳西磁磁电有限公司 Sintered neodymium-iron-boron magnet of high cost performance and high corrosion resistance and preparation method thereof
CN101615459B (en) * 2009-04-28 2011-11-23 中国科学院宁波材料技术与工程研究所 Method for improving performance of sintered Nd-Fe-B permanent magnetic material
CN101877265A (en) * 2010-04-28 2010-11-03 天津天和磁材技术有限公司 Method for manufacturing neodymium iron boron permanent magnetic material with high performance

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0430278A1 (en) * 1989-12-01 1991-06-05 Sumitomo Special Metals Co., Ltd. Rare earth-iron-boron permanent magnet
JP2000188213A (en) * 1998-10-14 2000-07-04 Hitachi Metals Ltd R-t-b sintered permanent magnet
EP1961506A1 (en) * 2005-12-02 2008-08-27 Hitachi Metals, Ltd. Rare earth sintered magnet and method for producing same
CN101859639A (en) * 2010-07-06 2010-10-13 烟台正海磁性材料股份有限公司 R-Fe-B series magnet of gradient resistance and production method thereof
US20130093551A1 (en) * 2010-07-06 2013-04-18 Buzhuang Peng R-Fe-B based magnet having gradient electric resistance and method for producing the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2012171490A1 *

Also Published As

Publication number Publication date
EP2721618A1 (en) 2014-04-23
WO2012171490A1 (en) 2012-12-20
CN102832003A (en) 2012-12-19

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