EP0286357A3 - Multiphase permanent magnet of the fe-b-mm type - Google Patents

Multiphase permanent magnet of the fe-b-mm type Download PDF

Info

Publication number
EP0286357A3
EP0286357A3 EP88303018A EP88303018A EP0286357A3 EP 0286357 A3 EP0286357 A3 EP 0286357A3 EP 88303018 A EP88303018 A EP 88303018A EP 88303018 A EP88303018 A EP 88303018A EP 0286357 A3 EP0286357 A3 EP 0286357A3
Authority
EP
European Patent Office
Prior art keywords
shapes
powder
r2fe14b
phases
essentially
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Withdrawn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
EP88303018A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0286357A2 (en
Inventor
Suresh G. Patel
George C. Hadjipanayis
Christodoulos Christoduoulou
Edward H. Abbott
Robert H. Erickson
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.)
Ford Werke GmbH
Ford France SA
Ford Motor Co Ltd
Original Assignee
Ford Werke GmbH
Ford France SA
Ford Motor Co 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 Ford Werke GmbH, Ford France SA, Ford Motor Co Ltd filed Critical Ford Werke GmbH
Publication of EP0286357A2 publication Critical patent/EP0286357A2/en
Publication of EP0286357A3 publication Critical patent/EP0286357A3/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Withdrawn legal-status Critical Current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
    • 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
    • B22F3/10—Sintering only
    • B22F3/1003—Use of special medium during sintering, e.g. sintering aid
    • B22F3/1007—Atmosphere
    • B22F3/101—Changing atmosphere
    • 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
    • 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

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
EP88303018A 1987-04-06 1988-04-05 Multiphase permanent magnet of the fe-b-mm type Withdrawn EP0286357A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3486287A 1987-04-06 1987-04-06
US34862 1987-04-06

Publications (2)

Publication Number Publication Date
EP0286357A2 EP0286357A2 (en) 1988-10-12
EP0286357A3 true EP0286357A3 (en) 1990-06-06

Family

ID=21879060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88303018A Withdrawn EP0286357A3 (en) 1987-04-06 1988-04-05 Multiphase permanent magnet of the fe-b-mm type

Country Status (5)

Country Link
EP (1) EP0286357A3 (ja)
JP (1) JPS63262805A (ja)
KR (1) KR880013194A (ja)
AU (1) AU608309B2 (ja)
BR (1) BR8801585A (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0265006A1 (en) * 1986-10-13 1988-04-27 Koninklijke Philips Electronics N.V. Method of manufacturing a permanent magnet
FR2652319A1 (fr) * 1989-09-26 1991-03-29 Eyherabide Michel Retroviseur automobile pour supprimer l'angle mort.
FR2652535A1 (fr) * 1989-10-03 1991-04-05 Caine Stephane Procede de fabrication simplifiee de pastilles de composition donnee appartenant au groupe des supraconducteurs, des ferrites et des materiaux a structure granulaire complexe.
US6669788B1 (en) 1999-02-12 2003-12-30 General Electric Company Permanent magnetic materials of the Fe-B-R tpe, containing Ce and Nd and/or Pr, and process for manufacture
CN1251252C (zh) * 1999-02-12 2006-04-12 通用电气公司 含有铈、钕和/或镨的铁－硼－稀土型永磁材料及其生产方法
EP1072044A1 (en) * 1999-02-12 2001-01-31 General Electric Company Praseodymium-rich iron-boron-rare earth composition, permanent magnet produced therefrom, and method of making
DE60028659T2 (de) 1999-06-08 2007-05-31 Shin-Etsu Chemical Co., Ltd. Dünnes Band einer dauermagnetischen Legierung auf Seltenerdbasis
JP4702542B2 (ja) * 2005-12-02 2011-06-15 信越化学工業株式会社 Ｒ−ｔ−ｂ−ｃ型焼結磁石の製造方法
US7988795B2 (en) 2005-12-02 2011-08-02 Shin-Etsu Chemical Co., Ltd. R-T-B—C rare earth sintered magnet and making method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1315571C (en) * 1982-08-21 1993-04-06 Masato Sagawa Magnetic materials and permanent magnets
EP0157329A3 (en) * 1984-03-30 1987-06-16 Union Oil Company Of California PrCo5-containing magnets
JPS61119006A (ja) * 1984-11-15 1986-06-06 Hitachi Metals Ltd 焼結磁石の製造方法
JPH0624163B2 (ja) * 1985-09-17 1994-03-30 ティーディーケイ株式会社 永久磁石
JPS61208809A (ja) * 1985-03-13 1986-09-17 Hitachi Metals Ltd 焼結磁石の製造方法
JPS61284551A (ja) * 1985-06-10 1986-12-15 Seiko Epson Corp 永久磁石合金
JPH0617481B2 (ja) * 1985-07-23 1994-03-09 住友特殊金属株式会社 希土類磁石用合金粉末およびその製造方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JOURNAL OF APPLIED PHYSICS, vol. 57, no. 8, part 2B, April 1985, pages 4146-4148; M. OKADA et al.: "Didymium-Fe-B sintered permanent magnets" *
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 150 (C-422)[2597], 15th May 1987; & JP 61284551 A (SEIKO EPSON CORP.) 15-12-1986 *
PROCEEDINGS OF THE 8TH INTERNATIONAL WORKSHOP OF RARE EARTH METALS, 1985, pages 541-552, GB; Z. MAOCAI et al.: "Effects of additive elements on magnetic properties of sintered Nd-B-Fe magnet" *

Also Published As

Publication number Publication date
JPS63262805A (ja) 1988-10-31
EP0286357A2 (en) 1988-10-12
BR8801585A (pt) 1988-11-08
KR880013194A (ko) 1988-11-30
AU1415488A (en) 1988-10-06
AU608309B2 (en) 1991-03-28

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