HK68690A - Permanent magnets - Google Patents

Permanent magnets

Info

Publication number
HK68690A
HK68690A HK686/90A HK68690A HK68690A HK 68690 A HK68690 A HK 68690A HK 686/90 A HK686/90 A HK 686/90A HK 68690 A HK68690 A HK 68690A HK 68690 A HK68690 A HK 68690A
Authority
HK
Hong Kong
Prior art keywords
permanent magnets
magnets
permanent
Prior art date
Application number
HK686/90A
Other languages
English (en)
Inventor
Setsuo Fujimura
Masato Sagawa
Yutaka Matsuura
Hitoshi Yamamoto
Norio Togawa
Original Assignee
Sumitomo Spec Metals
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=15301613&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=HK68690(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sumitomo Spec Metals filed Critical Sumitomo Spec Metals
Publication of HK68690A publication Critical patent/HK68690A/xx

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
HK686/90A 1983-08-04 1990-08-30 Permanent magnets HK68690A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58141850A JPS6034005A (ja) 1983-08-04 1983-08-04 永久磁石

Publications (1)

Publication Number Publication Date
HK68690A true HK68690A (en) 1990-09-07

Family

ID=15301613

Family Applications (1)

Application Number Title Priority Date Filing Date
HK686/90A HK68690A (en) 1983-08-04 1990-08-30 Permanent magnets

Country Status (7)

Country Link
US (1) US4859255A (xx)
EP (1) EP0134304B2 (xx)
JP (1) JPS6034005A (xx)
CA (1) CA1280012C (xx)
DE (1) DE3372424D1 (xx)
HK (1) HK68690A (xx)
SG (1) SG48690G (xx)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6032306A (ja) * 1983-08-02 1985-02-19 Sumitomo Special Metals Co Ltd 永久磁石
US5230749A (en) * 1983-08-04 1993-07-27 Sumitomo Special Metals Co., Ltd. Permanent magnets
CA1235631A (en) * 1984-02-28 1988-04-26 Hitoshi Yamamoto Process for producing permanent magnets and products thereof
US4767450A (en) * 1984-11-27 1988-08-30 Sumitomo Special Metals Co., Ltd. Process for producing the rare earth alloy powders
JPS61208807A (ja) * 1985-03-13 1986-09-17 Hitachi Metals Ltd 永久磁石
US5538565A (en) * 1985-08-13 1996-07-23 Seiko Epson Corporation Rare earth cast alloy permanent magnets and methods of preparation
US6136099A (en) * 1985-08-13 2000-10-24 Seiko Epson Corporation Rare earth-iron series permanent magnets and method of preparation
FR2586323B1 (fr) * 1985-08-13 1992-11-13 Seiko Epson Corp Aimant permanent a base de terres rares-fer
JPS62165305A (ja) * 1986-01-16 1987-07-21 Hitachi Metals Ltd 熱安定性良好な永久磁石およびその製造方法
US4769063A (en) * 1986-03-06 1988-09-06 Sumitomo Special Metals Co., Ltd. Method for producing rare earth alloy
US4954186A (en) * 1986-05-30 1990-09-04 Union Oil Company Of California Rear earth-iron-boron permanent magnets containing aluminum
US4878958A (en) * 1986-05-30 1989-11-07 Union Oil Company Of California Method for preparing rare earth-iron-boron permanent magnets
US5230751A (en) * 1986-07-23 1993-07-27 Hitachi Metals, Ltd. Permanent magnet with good thermal stability
US5223047A (en) * 1986-07-23 1993-06-29 Hitachi Metals, Ltd. Permanent magnet with good thermal stability
EP0421488B1 (en) * 1986-07-23 1994-10-12 Hitachi Metals, Ltd. Permanent magnet with good thermal stability
EP0255939B1 (en) * 1986-08-04 1993-07-28 Sumitomo Special Metals Co., Ltd. Rare earth magnet and rare earth magnet alloy powder having high corrosion resistance
JPH0815122B2 (ja) * 1986-09-19 1996-02-14 住友特殊金属株式会社 耐食性のすぐれた希土類磁石及びその製造方法
JPH0752683B2 (ja) * 1986-11-26 1995-06-05 住友特殊金属株式会社 耐食性のすぐれた希土類磁石
US4942098A (en) * 1987-03-26 1990-07-17 Sumitomo Special Metals, Co., Ltd. Corrosion resistant permanent magnet
JP2741508B2 (ja) * 1988-02-29 1998-04-22 住友特殊金属株式会社 磁気異方性焼結磁石とその製造方法
US5000800A (en) * 1988-06-03 1991-03-19 Masato Sagawa Permanent magnet and method for producing the same
JPH0283905A (ja) * 1988-09-20 1990-03-26 Sumitomo Special Metals Co Ltd 耐食性永久磁石およびその製造方法
JP2596835B2 (ja) * 1989-08-04 1997-04-02 新日本製鐵株式会社 希土類系異方性粉末および希土類系異方性磁石
JP3121824B2 (ja) * 1990-02-14 2001-01-09 ティーディーケイ株式会社 焼結永久磁石
EP0539592B1 (en) * 1990-07-16 1995-07-05 Aura Systems, Inc. Magnetic material
US5288339A (en) * 1990-07-25 1994-02-22 Siemens Aktiengesellschaft Process for the production of magnetic material based on the Sm-Fe-N system of elements
DE4025277A1 (de) * 1990-08-09 1992-02-13 Siemens Ag Verfahren zur herstellung eines anisotropen magnetmaterials auf basis des stoffsystems sm-fe-n
DE4025278A1 (de) * 1990-08-09 1992-02-13 Siemens Ag Verfahren zur herstellung eines formkoerpers aus einem anisotropen magnetwerkstoff auf basis des stoffsystems sm-fe-n
WO1993020567A1 (en) * 1992-04-02 1993-10-14 Tovarischestvo S Ogranichennoi Otvetstvennostju 'magran' Permanent magnet
JP2983902B2 (ja) * 1996-04-12 1999-11-29 住友特殊金属株式会社 超低温用永久磁石材料
US6332933B1 (en) * 1997-10-22 2001-12-25 Santoku Corporation Iron-rare earth-boron-refractory metal magnetic nanocomposites
US6319336B1 (en) 1998-07-29 2001-11-20 Dowa Mining Co., Ltd. Permanent magnet alloy having improved heat resistance and process for production thereof
BRPI0506147B1 (pt) * 2004-10-19 2020-10-13 Shin-Etsu Chemical Co., Ltd método para preparar um material de ímã permanente de terra rara
KR101378089B1 (ko) * 2007-05-02 2014-03-27 히다찌긴조꾸가부시끼가이사 Ｒ－ｔ－ｂ계 소결 자석
CN101689416B (zh) * 2007-05-02 2012-10-03 日立金属株式会社 R-t-b系烧结磁体
CN101154489B (zh) * 2007-08-31 2010-09-29 钢铁研究总院 抗冲击铁基稀土永磁体及其制备方法
CN102067249B (zh) * 2008-06-13 2014-07-30 日立金属株式会社 R-T-Cu-Mn-B系烧结磁铁
AU2014281646A1 (en) 2013-06-17 2016-02-11 Urban Mining Technology Company, Llc 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

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2167240A (en) * 1937-09-30 1939-07-25 Mallory & Co Inc P R Magnet material
GB734597A (en) * 1951-08-06 1955-08-03 Deutsche Edelstahlwerke Ag Permanent magnet alloys and the production thereof
US4063970A (en) * 1967-02-18 1977-12-20 Magnetfabrik Bonn G.M.B.H. Vormals Gewerkschaft Windhorst Method of making permanent magnets
US3560200A (en) * 1968-04-01 1971-02-02 Bell Telephone Labor Inc Permanent magnetic materials
US3684593A (en) * 1970-11-02 1972-08-15 Gen Electric Heat-aged sintered cobalt-rare earth intermetallic product and process
DE2705384C3 (de) * 1976-02-10 1986-03-27 TDK Corporation, Tokio/Tokyo Dauermagnet-Legierung und Verfahren zur Wärmebehandlung gesinterter Dauermagnete
JPS5814865B2 (ja) * 1978-03-23 1983-03-22 セイコーエプソン株式会社 永久磁石材料
JPS55132004A (en) * 1979-04-02 1980-10-14 Seiko Instr & Electronics Ltd Manufacture of rare earth metal and cobalt magnet
JPS5665954A (en) * 1979-11-02 1981-06-04 Seiko Instr & Electronics Ltd Rare earth element magnet and its manufacture
US4401482A (en) * 1980-02-22 1983-08-30 Bell Telephone Laboratories, Incorporated Fe--Cr--Co Magnets by powder metallurgy processing
US4276097A (en) * 1980-05-02 1981-06-30 The United States Of America As Represented By The Secretary Of The Army Method of treating Sm2 Co17 -based permanent magnet alloys
JPS601940B2 (ja) * 1980-08-11 1985-01-18 富士通株式会社 感温素子材料
JPS5760055A (en) * 1980-09-29 1982-04-10 Inoue Japax Res Inc Spinodal decomposition type magnet alloy
JPS57141901A (en) * 1981-02-26 1982-09-02 Mitsubishi Steel Mfg Co Ltd Permanent magnet powder
US4533408A (en) * 1981-10-23 1985-08-06 Koon Norman C Preparation of hard magnetic alloys of a transition metal and lanthanide
JPS58123853A (ja) * 1982-01-18 1983-07-23 Fujitsu Ltd 希土類−鉄系永久磁石およびその製造方法
US4851058A (en) * 1982-09-03 1989-07-25 General Motors Corporation High energy product rare earth-iron magnet alloys
EP0106948B1 (en) * 1982-09-27 1989-01-25 Sumitomo Special Metals Co., Ltd. Permanently magnetizable alloys, magnetic materials and permanent magnets comprising febr or (fe,co)br (r=vave earth)
US4597938A (en) * 1983-05-21 1986-07-01 Sumitomo Special Metals Co., Ltd. Process for producing permanent magnet materials
JPS609852A (ja) * 1983-06-24 1985-01-18 ゼネラル・モ−タ−ズ・コ−ポレ−シヨン 高エネルギ−積の稀土類−鉄磁石合金
JPH08440B2 (ja) * 1991-10-29 1996-01-10 アキレス株式会社 射出成形布靴の製造方法

Also Published As

Publication number Publication date
CA1280012C (en) 1991-02-12
US4859255A (en) 1989-08-22
EP0134304B2 (en) 1992-02-26
JPH0510807B2 (xx) 1993-02-10
DE3372424D1 (en) 1987-08-13
EP0134304B1 (en) 1987-07-08
EP0134304A1 (en) 1985-03-20
SG48690G (en) 1991-02-14
JPS6034005A (ja) 1985-02-21

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Legal Events

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PE Patent expired