EP1679724A4 - Method for producing sintered rare earth element magnet - Google Patents

Method for producing sintered rare earth element magnet

Info

Publication number
EP1679724A4
EP1679724A4 EP04793118A EP04793118A EP1679724A4 EP 1679724 A4 EP1679724 A4 EP 1679724A4 EP 04793118 A EP04793118 A EP 04793118A EP 04793118 A EP04793118 A EP 04793118A EP 1679724 A4 EP1679724 A4 EP 1679724A4
Authority
EP
European Patent Office
Prior art keywords
rare earth
earth element
element magnet
producing sintered
sintered rare
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Withdrawn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
EP04793118A
Other languages
German (de)
French (fr)
Other versions
EP1679724A1 (en
Inventor
Makoto Iwasaki
Chikara Ishizaka
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Publication of EP1679724A1 publication Critical patent/EP1679724A1/en
Publication of EP1679724A4 publication Critical patent/EP1679724A4/en
Withdrawn legal-status Critical Current

Links

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
    • H01F1/0575—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
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/06—Metallic powder characterised by the shape of the particles
    • B22F1/068—Flake-like particles
    • 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
    • B22F3/12—Both compacting and sintering
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0433—Nickel- or cobalt-based alloys
    • C22C1/0441—Alloys based on intermetallic compounds of the type rare earth - Co, Ni
    • 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
    • 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
    • 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
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Nanotechnology (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
EP04793118A 2003-10-31 2004-10-28 Method for producing sintered rare earth element magnet Withdrawn EP1679724A4 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2003373676 2003-10-31
JP2003373681 2003-10-31
JP2003373675 2003-10-31
JP2003373674 2003-10-31
JP2003373673 2003-10-31
JP2003373682 2003-10-31
PCT/JP2004/016010 WO2005043558A1 (en) 2003-10-31 2004-10-28 Method for producing sintered rare earth element magnet

Publications (2)

Publication Number Publication Date
EP1679724A1 EP1679724A1 (en) 2006-07-12
EP1679724A4 true EP1679724A4 (en) 2010-01-20

Family

ID=34557848

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04793118A Withdrawn EP1679724A4 (en) 2003-10-31 2004-10-28 Method for producing sintered rare earth element magnet

Country Status (3)

Country Link
EP (1) EP1679724A4 (en)
JP (1) JP4033884B2 (en)
WO (1) WO2005043558A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4645336B2 (en) * 2005-07-15 2011-03-09 日立金属株式会社 Rare earth sintered magnet and manufacturing method thereof
JP5274781B2 (en) * 2007-03-22 2013-08-28 昭和電工株式会社 R-T-B type alloy and method for producing R-T-B type alloy, fine powder for R-T-B type rare earth permanent magnet, R-T-B type rare earth permanent magnet
JP2011021269A (en) * 2009-03-31 2011-02-03 Showa Denko Kk Alloy material for r-t-b-based rare-earth permanent magnet, method for manufacturing r-t-b-based rare-earth permanent magnet, and motor
JP5743458B2 (en) * 2010-09-03 2015-07-01 昭和電工株式会社 Alloy material for RTB-based rare earth permanent magnet, method for manufacturing RTB-based rare earth permanent magnet, and motor
JP4951703B2 (en) * 2010-09-30 2012-06-13 昭和電工株式会社 Alloy material for RTB-based rare earth permanent magnet, method for manufacturing RTB-based rare earth permanent magnet, and motor
CN104308146B (en) * 2014-10-24 2017-05-03 合肥斯科尔智能科技有限公司 Material recycling system for use in metal powder printing process
CN109712770B (en) * 2019-01-28 2020-07-07 包头天和磁材科技股份有限公司 Samarium cobalt magnet and method of making same
CN112951534B (en) * 2021-02-02 2023-03-24 包头市金蒙汇磁材料有限责任公司 Sintered neodymium-iron-boron magnet and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249973A1 (en) * 1986-06-16 1987-12-23 Tokin Corporation Permanent magnetic material and method for producing the same
US4954186A (en) * 1986-05-30 1990-09-04 Union Oil Company Of California Rear earth-iron-boron permanent magnets containing aluminum
US5004499A (en) * 1987-11-02 1991-04-02 Union Oil Company Of California Rare earth-iron-boron compositions for polymer-bonded magnets

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63114939A (en) * 1986-04-11 1988-05-19 Tokin Corp R2t14b-type composite-type magnet material and its production
JP2546989B2 (en) * 1986-04-30 1996-10-23 株式会社 トーキン Permanent magnet with excellent oxidation resistance
JPS62284028A (en) * 1986-04-30 1987-12-09 Tohoku Metal Ind Ltd Manufacture of rare-earth magnet
JPH06251921A (en) * 1993-02-26 1994-09-09 Isuzu Motors Ltd Permanent magnet and manufacture thereof
JPH06251922A (en) * 1993-02-26 1994-09-09 Isuzu Motors Ltd Permanent magnet and manufacture thereof
JPH0774042A (en) * 1993-06-14 1995-03-17 Hitachi Metals Ltd Manufacture of rare-earth magnet and molding apparatus used for it
JPH0822909A (en) * 1994-07-07 1996-01-23 Isuzu Motors Ltd Permanent magnet having sufficient mechanical strength
JPH09275004A (en) * 1995-07-07 1997-10-21 Daido Steel Co Ltd Permanent magnet and its manufacture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4954186A (en) * 1986-05-30 1990-09-04 Union Oil Company Of California Rear earth-iron-boron permanent magnets containing aluminum
EP0249973A1 (en) * 1986-06-16 1987-12-23 Tokin Corporation Permanent magnetic material and method for producing the same
US5004499A (en) * 1987-11-02 1991-04-02 Union Oil Company Of California Rare earth-iron-boron compositions for polymer-bonded magnets

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2005043558A1 *

Also Published As

Publication number Publication date
WO2005043558A1 (en) 2005-05-12
EP1679724A1 (en) 2006-07-12
JPWO2005043558A1 (en) 2007-05-10
JP4033884B2 (en) 2008-01-16

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Effective date: 20091223

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Ipc: H01F 1/08 20060101AFI20050519BHEP

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