WO2002093591A3 - Iron-based rare earth alloy nanocomposite magnet and method for producing the same - Google Patents

Iron-based rare earth alloy nanocomposite magnet and method for producing the same Download PDF

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Publication number
WO2002093591A3
WO2002093591A3 PCT/JP2002/004499 JP0204499W WO02093591A3 WO 2002093591 A3 WO2002093591 A3 WO 2002093591A3 JP 0204499 W JP0204499 W JP 0204499W WO 02093591 A3 WO02093591 A3 WO 02093591A3
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WO
WIPO (PCT)
Prior art keywords
rare earth
iron
earth alloy
producing
same
Prior art date
Application number
PCT/JP2002/004499
Other languages
French (fr)
Other versions
WO2002093591A2 (en
Inventor
Hirokazu Kanekiyo
Toshio Miyoshi
Satoshi Hirosawa
Original Assignee
Sumitomo Spec Metals
Hirokazu Kanekiyo
Toshio Miyoshi
Satoshi Hirosawa
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 Sumitomo Spec Metals, Hirokazu Kanekiyo, Toshio Miyoshi, Satoshi Hirosawa filed Critical Sumitomo Spec Metals
Priority to HU0400631A priority Critical patent/HU227736B1/en
Priority to EP02769549A priority patent/EP1388152A2/en
Priority to US10/381,005 priority patent/US7208097B2/en
Priority to KR10-2003-7000616A priority patent/KR100535943B1/en
Publication of WO2002093591A2 publication Critical patent/WO2002093591A2/en
Publication of WO2002093591A3 publication Critical patent/WO2002093591A3/en

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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
    • 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
    • H01F1/0579—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B with exchange spin coupling between hard and soft nanophases, e.g. nanocomposite spring magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
    • 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
    • H01F1/0578—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 bonded together

Abstract

An iron-based rare earth alloy nanocomposite magnet has a composition represented by (Fe1-mTm)¿100-x-y-z?QxRyTiz where T is Co and/or Ni, Q is B and/or C and R is rare earth element(s) including substantially no La or Ce. x, y, z and m satisfy 10 at%<x≤17 at%, 7 at%≤y<10 at%, 0.5 at%≤z≤6 at% and 0≤m≤0.5, respectively. The magnet includes crystal grains of an R2T14Q type compound having an average grain size of 20 nm to 200 nm and a ferromagnetic iron-based boride that exists in a grain boundary between the crystal grains of the R2T14Q type compound. The boride is dispersed in, or present in the form of a film over, the grain boundary to cover the surface of the crystal grains of the R2T14Q type compound at least partially.
PCT/JP2002/004499 2001-05-15 2002-05-08 Iron-based rare earth alloy nanocomposite magnet and method for producing the same WO2002093591A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
HU0400631A HU227736B1 (en) 2001-05-15 2002-05-08 Iron-based rare earth alloy nanocomposite magnet and method for producing the same
EP02769549A EP1388152A2 (en) 2001-05-15 2002-05-08 Iron-based rare earth alloy nanocomposite magnet and method for producing the same
US10/381,005 US7208097B2 (en) 2001-05-15 2002-05-08 Iron-based rare earth alloy nanocomposite magnet and method for producing the same
KR10-2003-7000616A KR100535943B1 (en) 2001-05-15 2002-05-08 Iron-based rare earth alloy nanocomposite magnet and method for producing the same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2001-144076 2001-05-15
JP2001144076 2001-05-15
JP2001357785 2001-11-22
JP2001-357785 2001-11-22

Publications (2)

Publication Number Publication Date
WO2002093591A2 WO2002093591A2 (en) 2002-11-21
WO2002093591A3 true WO2002093591A3 (en) 2003-03-06

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Family Applications (1)

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PCT/JP2002/004499 WO2002093591A2 (en) 2001-05-15 2002-05-08 Iron-based rare earth alloy nanocomposite magnet and method for producing the same

Country Status (7)

Country Link
US (1) US7208097B2 (en)
EP (1) EP1388152A2 (en)
KR (1) KR100535943B1 (en)
CN (1) CN1212626C (en)
HU (1) HU227736B1 (en)
RU (1) RU2250524C2 (en)
WO (1) WO2002093591A2 (en)

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LEWIS L H ET AL: "COMPOSITIONAL CLUSTERING IN ND2FE14B MELT-SPUN RIBBONS", JOURNAL OF APPLIED PHYSICS, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 87, no. 9, 1 May 2000 (2000-05-01), pages 4735 - 4737, XP000947676, ISSN: 0021-8979 *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 078 (E - 1037) 22 February 1991 (1991-02-22) *

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CN1461486A (en) 2003-12-10
HUP0400631A2 (en) 2004-06-28
RU2003122788A (en) 2005-01-10
KR20030025271A (en) 2003-03-28
KR100535943B1 (en) 2005-12-12
EP1388152A2 (en) 2004-02-11
CN1212626C (en) 2005-07-27
US7208097B2 (en) 2007-04-24
WO2002093591A2 (en) 2002-11-21
HU227736B1 (en) 2012-02-28
US20040020569A1 (en) 2004-02-05
RU2250524C2 (en) 2005-04-20

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