AU571497B2 - Bonded rare earth-iron magnets - Google Patents

Bonded rare earth-iron magnets

Info

Publication number
AU571497B2
AU571497B2 AU25958/84A AU2595884A AU571497B2 AU 571497 B2 AU571497 B2 AU 571497B2 AU 25958/84 A AU25958/84 A AU 25958/84A AU 2595884 A AU2595884 A AU 2595884A AU 571497 B2 AU571497 B2 AU 571497B2
Authority
AU
Australia
Prior art keywords
rare earth
bonded rare
iron magnets
magnets
iron
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.)
Expired
Application number
AU25958/84A
Other versions
AU2595884A (en
Inventor
John Joseph Croat
Robert Weir Lee
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23956982&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AU571497(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of AU2595884A publication Critical patent/AU2595884A/en
Application granted granted Critical
Publication of AU571497B2 publication Critical patent/AU571497B2/en
Anticipated expiration legal-status Critical
Expired 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
    • H01F1/0578—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
AU25958/84A 1983-05-09 1984-03-21 Bonded rare earth-iron magnets Expired AU571497B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49262983A 1983-05-09 1983-05-09
US492629 1983-05-09

Publications (2)

Publication Number Publication Date
AU2595884A AU2595884A (en) 1984-11-15
AU571497B2 true AU571497B2 (en) 1988-04-21

Family

ID=23956982

Family Applications (1)

Application Number Title Priority Date Filing Date
AU25958/84A Expired AU571497B2 (en) 1983-05-09 1984-03-21 Bonded rare earth-iron magnets

Country Status (8)

Country Link
EP (1) EP0125752B1 (en)
JP (1) JPS59211549A (en)
AU (1) AU571497B2 (en)
BR (1) BR8402029A (en)
CA (1) CA1216623A (en)
DE (1) DE3480673D1 (en)
ES (1) ES8503163A1 (en)
MX (1) MX167657B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU574697B2 (en) * 1983-08-04 1988-07-14 General Motors Corporation Iron-rare earth-boron anisotropic permanent magnets
AU582141B2 (en) * 1984-03-08 1989-03-16 General Motors Corporation Epoxy resin bonded rare earth-iron magnets
AU593183B1 (en) * 1988-11-14 1990-02-01 Asahi Kasei Kogyo Kabushiki Kaisha Magnetic materials containing rare earth element iron nitrogen and hydrogen

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59219904A (en) * 1983-05-30 1984-12-11 Sumitomo Special Metals Co Ltd Permanent magnet material
JPS6017905A (en) * 1983-07-08 1985-01-29 Sumitomo Special Metals Co Ltd Permanent magnet alloy powder
JPS6032306A (en) * 1983-08-02 1985-02-19 Sumitomo Special Metals Co Ltd Permanent magnet
JPS60153109A (en) * 1984-01-21 1985-08-12 Sumitomo Special Metals Co Ltd Permanent magnet
CA1244322A (en) * 1984-09-14 1988-11-08 Robert W. Lee Hot pressed permanent magnet having high and low coercivity regions
USRE34838E (en) * 1984-12-31 1995-01-31 Tdk Corporation Permanent magnet and method for producing same
JPH0630295B2 (en) * 1984-12-31 1994-04-20 ティーディーケイ株式会社 permanent magnet
US6136099A (en) * 1985-08-13 2000-10-24 Seiko Epson Corporation Rare earth-iron series permanent magnets and method of preparation
US5538565A (en) * 1985-08-13 1996-07-23 Seiko Epson Corporation Rare earth cast alloy permanent magnets and methods of preparation
JPH0687634B2 (en) * 1986-02-24 1994-11-02 松下電器産業株式会社 Permanent magnet type motor
US4689163A (en) * 1986-02-24 1987-08-25 Matsushita Electric Industrial Co., Ltd. Resin-bonded magnet comprising a specific type of ferromagnetic powder dispersed in a specific type of resin binder
JP2530641B2 (en) * 1986-03-20 1996-09-04 日立金属株式会社 Magnetically anisotropic bonded magnet, magnetic powder used therefor, and method for producing the same
EP0242187B1 (en) * 1986-04-15 1992-06-03 TDK Corporation Permanent magnet and method of producing same
DE3789829T2 (en) * 1986-06-06 1994-09-01 Seiko Instr Inc Rare earth iron magnet and manufacturing process.
EP0248981B1 (en) * 1986-06-12 1993-07-07 Kabushiki Kaisha Toshiba Permanent magnet and permanent magnetic alloy
AT386554B (en) * 1986-08-04 1988-09-12 Treibacher Chemische Werke Ag METHOD FOR PRODUCING CORROSION-RESISTANT, HARD MAGNETIC POWDER FOR MAGNETIC PRODUCTION, MAGNETS FROM HARD MAGNETIC POWDER AND METHOD FOR PRODUCING THE SAME
EP0265006A1 (en) * 1986-10-13 1988-04-27 Koninklijke Philips Electronics N.V. Method of manufacturing a permanent magnet
US4829277A (en) * 1986-11-20 1989-05-09 General Motors Corporation Isotropic rare earth-iron field magnets for magnetic resonance imaging
KR900006533B1 (en) * 1987-01-06 1990-09-07 히다찌 긴조꾸 가부시끼가이샤 Anisotropic magnetic materials and magnets made with it and making method for it
US4983232A (en) * 1987-01-06 1991-01-08 Hitachi Metals, Ltd. Anisotropic magnetic powder and magnet thereof and method of producing same
JP2599378B2 (en) * 1987-02-06 1997-04-09 松下電器産業株式会社 Manufacturing method of resin magnet
EP0284033B1 (en) * 1987-03-23 1993-08-11 Tokin Corporation A method for producing a rare earth metal-iron-boron anisotropic bonded magnet from rapidly-quenched rare earth metal-iron-boron alloy ribbon-like flakes
DE3752160T2 (en) * 1987-04-30 1998-04-16 Seiko Epson Corp Magnetic alloy and manufacturing process
US5460662A (en) * 1987-04-30 1995-10-24 Seiko Epson Corporation Permanent magnet and method of production
US5186761A (en) * 1987-04-30 1993-02-16 Seiko Epson Corporation Magnetic alloy and method of production
DE3850001T2 (en) * 1987-08-19 1994-11-03 Mitsubishi Materials Corp Magnetic rare earth iron boron powder and its manufacturing process.
JP2619653B2 (en) * 1987-10-16 1997-06-11 セイコーエプソン株式会社 Rare earth magnet
US4881988A (en) * 1987-11-16 1989-11-21 Rjf International Corporation Novel flexible magnet for use in small dc motors
US4832891A (en) * 1987-11-25 1989-05-23 Eastman Kodak Company Method of making an epoxy bonded rare earth-iron magnet
JPH0614485B2 (en) * 1988-05-25 1994-02-23 大八化学工業株式会社 Surface-modified magnetic powder and bonded magnet composition containing the same
IE891581A1 (en) * 1988-06-20 1991-01-02 Seiko Epson Corp Permanent magnet and a manufacturing method thereof
DE68925506T2 (en) * 1988-10-04 1996-09-19 Hitachi Metals Ltd Bound R-Fe-B magnet and manufacturing method
CA2019257A1 (en) * 1989-06-27 1990-12-27 Takuji Nomura Magnet and method for manufacturing the same
US5037492A (en) * 1989-12-19 1991-08-06 General Motors Corporation Alloying low-level additives into hot-worked Nd-Fe-B magnets
JP2780422B2 (en) * 1990-03-07 1998-07-30 松下電器産業株式会社 Method for manufacturing resin magnet structure
AU6733196A (en) * 1995-08-30 1997-03-19 Danfoss A/S Method of producing magnetic poles on a base member, and rotor of an electrical machine
JPH08181011A (en) * 1995-10-02 1996-07-12 Seiko Epson Corp Rare earth magnet
JP5752094B2 (en) * 2012-08-08 2015-07-22 ミネベア株式会社 Method for producing full-dense rare earth-iron bond magnet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1847783A (en) * 1982-09-03 1984-03-08 General Motors Corporation Hard magnetic transition metal-rare earth-boron alloys
AU3096284A (en) * 1983-08-04 1985-02-07 General Motors Corporation Iron-rare earth-boron anisotropic permanent magnets

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB455806A (en) * 1934-07-11 1936-10-28 Max Baermann Junior Process for making permanent magnets
DE1288317B (en) * 1966-09-01 1969-01-30 Baermann Max Process for the production of anisotropic pressed permanent magnets
US4197146A (en) * 1978-10-24 1980-04-08 General Electric Company Molded amorphous metal electrical magnetic components
JPS5754304A (en) * 1980-09-19 1982-03-31 Seiko Epson Corp Manufacture of permanent magnet
JPS57141901A (en) * 1981-02-26 1982-09-02 Mitsubishi Steel Mfg Co Ltd Permanent magnet powder
CA1176814A (en) * 1981-05-11 1984-10-30 Kalatur S. V. L. Narasimhan Method of improving magnets
US4851058A (en) * 1982-09-03 1989-07-25 General Motors Corporation High energy product rare earth-iron magnet alloys

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1847783A (en) * 1982-09-03 1984-03-08 General Motors Corporation Hard magnetic transition metal-rare earth-boron alloys
AU3096284A (en) * 1983-08-04 1985-02-07 General Motors Corporation Iron-rare earth-boron anisotropic permanent magnets

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU574697B2 (en) * 1983-08-04 1988-07-14 General Motors Corporation Iron-rare earth-boron anisotropic permanent magnets
AU582141B2 (en) * 1984-03-08 1989-03-16 General Motors Corporation Epoxy resin bonded rare earth-iron magnets
AU593183B1 (en) * 1988-11-14 1990-02-01 Asahi Kasei Kogyo Kabushiki Kaisha Magnetic materials containing rare earth element iron nitrogen and hydrogen

Also Published As

Publication number Publication date
ES532283A0 (en) 1985-02-01
ES8503163A1 (en) 1985-02-01
CA1216623A (en) 1987-01-13
JPS59211549A (en) 1984-11-30
BR8402029A (en) 1984-12-18
AU2595884A (en) 1984-11-15
EP0125752A3 (en) 1987-01-28
DE3480673D1 (en) 1990-01-11
JPH0420975B2 (en) 1992-04-07
MX167657B (en) 1993-04-01
EP0125752B1 (en) 1989-12-06
EP0125752A2 (en) 1984-11-21

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired