FR2387500A1 - RARE EARTH ALLOY MAGNETS - Google Patents

RARE EARTH ALLOY MAGNETS

Info

Publication number
FR2387500A1
FR2387500A1 FR7811050A FR7811050A FR2387500A1 FR 2387500 A1 FR2387500 A1 FR 2387500A1 FR 7811050 A FR7811050 A FR 7811050A FR 7811050 A FR7811050 A FR 7811050A FR 2387500 A1 FR2387500 A1 FR 2387500A1
Authority
FR
France
Prior art keywords
rare earth
earth alloy
alloy magnets
hydride
subjected
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Withdrawn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
FR7811050A
Other languages
French (fr)
Inventor
Ivor Rex Harris
Judith Mary Evans
Peter Shannon Niholm
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.)
MAGNETIC POLYMERS Ltd
Original Assignee
MAGNETIC POLYMERS Ltd
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 MAGNETIC POLYMERS Ltd filed Critical MAGNETIC POLYMERS Ltd
Publication of FR2387500A1 publication Critical patent/FR2387500A1/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Withdrawn legal-status Critical Current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
    • H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
    • H01F1/0557—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/023—Hydrogen absorption
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B6/00—Hydrides of metals including fully or partially hydrided metals, alloys or intermetallic compounds ; Compounds containing at least one metal-hydrogen bond, e.g. (GeH3)2S, SiH GeH; Monoborane or diborane; Addition complexes thereof
    • 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
    • H01F1/0553—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 obtained by reduction or by hydrogen decrepitation or embrittlement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)

Abstract

Corps d'aimant comprenant des particules magnétiquement orientées de poudre d'alliage magnétique. L'alliage comprend au moins une terre rare, du cérium ou de l'yttrium, il a été soumis à l'action d'une atmosphère contenant de l'hydrogène à température et pression telles qu'il a été au moins partiellement transformé en hydrure et qu'ensuite il a été soumis à des conditions de température et de pression telles que l'hydrure a été décomposé. Application aux aimants permanents.Magnet body comprising magnetically oriented particles of magnetic alloy powder. The alloy comprises at least one rare earth, cerium or yttrium, it has been subjected to the action of an atmosphere containing hydrogen at temperature and pressure such that it has been at least partially transformed into hydride and then subjected to conditions of temperature and pressure such that the hydride was decomposed. Application to permanent magnets.

FR7811050A 1977-04-15 1978-04-14 RARE EARTH ALLOY MAGNETS Withdrawn FR2387500A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15854/77A GB1554384A (en) 1977-04-15 1977-04-15 Rare earth metal alloy magnets

Publications (1)

Publication Number Publication Date
FR2387500A1 true FR2387500A1 (en) 1978-11-10

Family

ID=10066722

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7811050A Withdrawn FR2387500A1 (en) 1977-04-15 1978-04-14 RARE EARTH ALLOY MAGNETS

Country Status (6)

Country Link
JP (1) JPS53131920A (en)
BE (1) BE865965A (en)
DE (1) DE2816538A1 (en)
FR (1) FR2387500A1 (en)
GB (1) GB1554384A (en)
NL (1) NL7803979A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0360203A1 (en) * 1988-09-22 1990-03-28 Energy Conversion Devices, Inc. Method and apparatus for size reducing of metal hydride hydrogen storage material.
EP0411571A2 (en) * 1989-07-31 1991-02-06 Mitsubishi Materials Corporation Rare earth permanent magnet powder, method for producing same and bonded magnet
EP0545644A1 (en) * 1991-11-28 1993-06-09 Mitsubishi Materials Corporation Method for heat treating metallic materials and apparatus therefor
WO1999027544A1 (en) * 1997-11-20 1999-06-03 Institut für Festkörper- und Werkstofforschung Dresden e.V. Method for producing a magnetic alloy powder
EP0924720A2 (en) * 1997-12-22 1999-06-23 Aichi Steel Works, Ltd. Production apparatus for rare earth anisotropic magnet powders

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8318009D0 (en) * 1983-07-02 1983-08-03 Lucas Ind Plc Hydrogen storage
JPS61252603A (en) * 1985-05-01 1986-11-10 Daido Steel Co Ltd Manufacture of rare earth magnet
GB2201426B (en) * 1987-02-27 1990-05-30 Philips Electronic Associated Improved method for the manufacture of rare earth transition metal alloy magnets
GB8707905D0 (en) * 1987-04-02 1987-05-07 Univ Birmingham Magnets
US5129964A (en) * 1989-09-06 1992-07-14 Sps Technologies, Inc. Process for making nd-b-fe type magnets utilizing a hydrogen and oxygen treatment
US5609695A (en) * 1993-12-21 1997-03-11 Matsushita Electric Industrial Co., Ltd. Method for producing alloy powder of the R2 T17 system, a method for producing magnetic powder of the R2 T17 Nx system, and a high pressure heat-treatment apparatus
DE19751367C2 (en) * 1997-11-20 2002-06-27 Dresden Ev Inst Festkoerper Process for producing a hard magnetic powder consisting of a samarium-cobalt-based alloy
DE19751366C2 (en) * 1997-11-20 2002-05-16 Dresden Ev Inst Festkoerper Process for the production of a hard magnetic samarium-cobalt base material
US6613213B1 (en) 2000-03-27 2003-09-02 Brookhaven Science Associates, Llc Method for producing electrodes using microscale or nanoscale materials obtained from hydrogendriven metallurgical reactions
WO2014205002A2 (en) 2013-06-17 2014-12-24 Miha Zakotnik Magnet recycling to create nd-fe-b magnets with improved or restored magnetic performance
US9336932B1 (en) 2014-08-15 2016-05-10 Urban Mining Company Grain boundary engineering

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1004605A (en) * 1961-05-15 1965-09-15 Philips Electronic Associated Improvements in or relating to processes for the manufacture of ductile metals in a finely-divided form
FR2038898A5 (en) * 1969-03-14 1971-01-08 Philips Nv
FR2089761A5 (en) * 1970-04-18 1972-01-07 Philips Nv
GB1280538A (en) * 1968-06-21 1972-07-05 Gen Electric Improvements in permanent magnet material powders

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1004605A (en) * 1961-05-15 1965-09-15 Philips Electronic Associated Improvements in or relating to processes for the manufacture of ductile metals in a finely-divided form
GB1280538A (en) * 1968-06-21 1972-07-05 Gen Electric Improvements in permanent magnet material powders
FR2038898A5 (en) * 1969-03-14 1971-01-08 Philips Nv
FR2089761A5 (en) * 1970-04-18 1972-01-07 Philips Nv

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0440843A1 (en) * 1988-09-22 1991-08-14 Energy Conversion Devices, Inc. Hydride reactor apparatus for hydrogen comminution of metal hydride hydrogen storage material
EP0360203A1 (en) * 1988-09-22 1990-03-28 Energy Conversion Devices, Inc. Method and apparatus for size reducing of metal hydride hydrogen storage material.
US5338371A (en) * 1989-07-31 1994-08-16 Mitsubishi Metal Corporation Rare earth permanent magnet powder, method for producing same and bonded magnet
EP0411571A3 (en) * 1989-07-31 1991-04-24 Mitsubishi Metal Corporation Rare earth permanent magnet powder, method for producing same and bonded magnet
US5228930A (en) * 1989-07-31 1993-07-20 Mitsubishi Materials Corporation Rare earth permanent magnet power, method for producing same and bonded magnet
EP0411571A2 (en) * 1989-07-31 1991-02-06 Mitsubishi Materials Corporation Rare earth permanent magnet powder, method for producing same and bonded magnet
EP0545644A1 (en) * 1991-11-28 1993-06-09 Mitsubishi Materials Corporation Method for heat treating metallic materials and apparatus therefor
US5354040A (en) * 1991-11-28 1994-10-11 Mitsubishi Materials Corporation Apparatus for closed cycle hydrogenation recovery and rehydrogenation
WO1999027544A1 (en) * 1997-11-20 1999-06-03 Institut für Festkörper- und Werkstofforschung Dresden e.V. Method for producing a magnetic alloy powder
US6352597B1 (en) * 1997-11-20 2002-03-05 Institut Fuer Festkoerper- Und Werkstofforschung Dresden E.V. Method for producing a magnetic alloy powder
EP0924720A2 (en) * 1997-12-22 1999-06-23 Aichi Steel Works, Ltd. Production apparatus for rare earth anisotropic magnet powders
EP0924720A3 (en) * 1997-12-22 1999-10-06 Aichi Steel Works, Ltd. Production apparatus for rare earth anisotropic magnet powders
US6113846A (en) * 1997-12-22 2000-09-05 Aichi Steel Works, Ltd. Production apparatus for rare earth anisotropic magnet powders

Also Published As

Publication number Publication date
JPS53131920A (en) 1978-11-17
BE865965A (en) 1978-07-31
NL7803979A (en) 1978-10-17
DE2816538A1 (en) 1978-10-26
GB1554384A (en) 1979-10-17

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Legal Events

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