EP1988183A4 - R-t-b alloy, method for producing the same, fine powder for r-t-b rare earth permanent magnet, and r-t-b rare earth permanent magnet - Google Patents

R-t-b alloy, method for producing the same, fine powder for r-t-b rare earth permanent magnet, and r-t-b rare earth permanent magnet

Info

Publication number
EP1988183A4
EP1988183A4 EP08703995A EP08703995A EP1988183A4 EP 1988183 A4 EP1988183 A4 EP 1988183A4 EP 08703995 A EP08703995 A EP 08703995A EP 08703995 A EP08703995 A EP 08703995A EP 1988183 A4 EP1988183 A4 EP 1988183A4
Authority
EP
European Patent Office
Prior art keywords
permanent magnet
rare earth
earth permanent
alloy
producing
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.)
Withdrawn
Application number
EP08703995A
Other languages
German (de)
French (fr)
Other versions
EP1988183A1 (en
Inventor
Nakajima Kenichiro
Hasegawa Hiroshi
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.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
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 Showa Denko KK filed Critical Showa Denko KK
Publication of EP1988183A1 publication Critical patent/EP1988183A1/en
Publication of EP1988183A4 publication Critical patent/EP1988183A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
    • 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
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • 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
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B22F2009/044—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by jet milling
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • 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
    • H01F1/059—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and Va elements, e.g. Sm2Fe17N2

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
EP08703995A 2007-02-05 2008-01-28 R-t-b alloy, method for producing the same, fine powder for r-t-b rare earth permanent magnet, and r-t-b rare earth permanent magnet Withdrawn EP1988183A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007025504 2007-02-05
PCT/JP2008/051186 WO2008096621A1 (en) 2007-02-05 2008-01-28 R-t-b alloy, method for producing the same, fine powder for r-t-b rare earth permanent magnet, and r-t-b rare earth permanent magnet

Publications (2)

Publication Number Publication Date
EP1988183A1 EP1988183A1 (en) 2008-11-05
EP1988183A4 true EP1988183A4 (en) 2012-01-25

Family

ID=39681532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08703995A Withdrawn EP1988183A4 (en) 2007-02-05 2008-01-28 R-t-b alloy, method for producing the same, fine powder for r-t-b rare earth permanent magnet, and r-t-b rare earth permanent magnet

Country Status (8)

Country Link
US (1) US20090035170A1 (en)
EP (1) EP1988183A4 (en)
JP (1) JP2008214747A (en)
KR (1) KR101036968B1 (en)
CN (1) CN101541996A (en)
RU (1) RU2389097C1 (en)
TW (1) TW200903532A (en)
WO (1) WO2008096621A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112009003804B4 (en) * 2008-12-26 2014-02-13 Showa Denko K.K. Alloy material for a rare earth permanent magnet of the R-T-B system, method of making a rare earth permanent magnet of the R-T-B system
JP5767788B2 (en) * 2010-06-29 2015-08-19 昭和電工株式会社 R-T-B rare earth permanent magnet, motor, automobile, generator, wind power generator
JP2012015168A (en) * 2010-06-29 2012-01-19 Showa Denko Kk R-t-b-based rare earth permanent magnet, motor, vehicle, generator and wind power generator
JP5753481B2 (en) * 2011-11-28 2015-07-22 中央電気工業株式会社 Rare earth alloy and method for producing the same
US10497497B2 (en) 2012-02-02 2019-12-03 Santoku Corporation R-T-B—Ga-based magnet material alloy and method of producing the same
CN104674115A (en) 2013-11-27 2015-06-03 厦门钨业股份有限公司 Low-B rare earth magnet
CN104952574A (en) 2014-03-31 2015-09-30 厦门钨业股份有限公司 Nd-Fe-B-Cu type sintered magnet containing W
CN105321647B (en) 2014-07-30 2018-02-23 厦门钨业股份有限公司 The preparation method of rare-earth magnet quick cooling alloy and rare-earth magnet
GB2536939A (en) * 2015-04-01 2016-10-05 Isis Innovation Method for designing alloys
EP3279906A4 (en) * 2015-04-02 2018-07-04 Xiamen Tungsten Co. Ltd. Ho and w-containing rare-earth magnet
JP6614084B2 (en) * 2016-09-26 2019-12-04 信越化学工業株式会社 Method for producing R-Fe-B sintered magnet
JP6863008B2 (en) * 2017-03-30 2021-04-21 Tdk株式会社 Method for manufacturing RTB-based rare earth sintered magnet alloy and RTB-based rare earth sintered magnet
CN106920620A (en) * 2017-04-05 2017-07-04 北京京磁电工科技有限公司 Neodymium iron boron magnetic body and preparation method thereof
KR102045402B1 (en) 2018-04-30 2019-11-15 성림첨단산업(주) Manufacturing method of rare earth sintered magnet

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1338359A1 (en) * 2000-10-06 2003-08-27 Santoku Corporation Process for producing, through strip casting, raw alloy for nanocomposite type permanent magnet
US20040163737A1 (en) * 2001-06-22 2004-08-26 Hiroyuki Tomizawa Rare earth magnet and method for production thereof
EP1479787A1 (en) * 2002-02-05 2004-11-24 Neomax Co., Ltd. Sinter magnet made from rare earth-iron-boron alloy powder for magnet

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3721831B2 (en) * 1999-03-11 2005-11-30 昭和電工株式会社 Rare earth magnet alloy and method for producing the same
US7244318B2 (en) * 2001-01-30 2007-07-17 Neomax Co., Ltd. Method for preparation of permanent magnet
EP1645648B1 (en) * 2001-03-30 2007-07-25 Neomax Co., Ltd. A rare earth alloy sintered compact
US7632360B2 (en) * 2003-08-27 2009-12-15 Nissan Motor Co., Ltd. Rare earth magnet powder and method of producing the same
US7585378B2 (en) * 2004-04-30 2009-09-08 Hitachi Metals, Ltd. Methods for producing raw material alloy for rare earth magnet, powder and sintered magnet
CN102242342B (en) * 2005-03-18 2014-10-01 株式会社爱发科 Coating method and apparatus, a permanent magnet, and manufacturing method thereof
CN101006534B (en) * 2005-04-15 2011-04-27 日立金属株式会社 Rare earth sintered magnet and process for producing the same
JP2006310660A (en) * 2005-04-28 2006-11-09 Neomax Co Ltd High electric resistance r-t-b based sintered magnet and its production process
JP4832856B2 (en) * 2005-10-31 2011-12-07 昭和電工株式会社 Method for producing RTB-based alloy and RTB-based alloy flakes, fine powder for RTB-based rare earth permanent magnet, RTB-based rare earth permanent magnet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1338359A1 (en) * 2000-10-06 2003-08-27 Santoku Corporation Process for producing, through strip casting, raw alloy for nanocomposite type permanent magnet
US20040163737A1 (en) * 2001-06-22 2004-08-26 Hiroyuki Tomizawa Rare earth magnet and method for production thereof
EP1479787A1 (en) * 2002-02-05 2004-11-24 Neomax Co., Ltd. Sinter magnet made from rare earth-iron-boron alloy powder for magnet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008096621A1 *

Also Published As

Publication number Publication date
WO2008096621A1 (en) 2008-08-14
KR101036968B1 (en) 2011-05-25
CN101541996A (en) 2009-09-23
EP1988183A1 (en) 2008-11-05
RU2008135113A (en) 2010-03-10
TW200903532A (en) 2009-01-16
JP2008214747A (en) 2008-09-18
US20090035170A1 (en) 2009-02-05
RU2389097C1 (en) 2010-05-10
KR20080106211A (en) 2008-12-04

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RIN1 Information on inventor provided before grant (corrected)

Inventor name: HIROSHI, HASEGAWAC/O SHOWA DENKO KK

Inventor name: KENICHIRO, NAKAJIMAC/O SHOWA DENKO KK

A4 Supplementary search report drawn up and despatched

Effective date: 20111222

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Ipc: H01F 1/057 20060101ALI20111216BHEP

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