CA1244322A - Hot pressed permanent magnet having high and low coercivity regions - Google Patents

Hot pressed permanent magnet having high and low coercivity regions

Info

Publication number
CA1244322A
CA1244322A CA000486721A CA486721A CA1244322A CA 1244322 A CA1244322 A CA 1244322A CA 000486721 A CA000486721 A CA 000486721A CA 486721 A CA486721 A CA 486721A CA 1244322 A CA1244322 A CA 1244322A
Authority
CA
Canada
Prior art keywords
region
hot
composition
regions
permanent magnet
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
CA000486721A
Other languages
English (en)
French (fr)
Inventor
Robert W. Lee
Neal A. Schaffel
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
General Motors Corp
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 General Motors Corp filed Critical General Motors Corp
Application granted granted Critical
Publication of CA1244322A publication Critical patent/CA1244322A/en
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
    • H01F1/0576—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 pressed, e.g. hot working

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Hard Magnetic Materials (AREA)
CA000486721A 1984-09-14 1985-07-12 Hot pressed permanent magnet having high and low coercivity regions Expired CA1244322A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US65062384A 1984-09-14 1984-09-14
US650,623 1984-09-14

Publications (1)

Publication Number Publication Date
CA1244322A true CA1244322A (en) 1988-11-08

Family

ID=24609632

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000486721A Expired CA1244322A (en) 1984-09-14 1985-07-12 Hot pressed permanent magnet having high and low coercivity regions

Country Status (7)

Country Link
EP (1) EP0174735B1 (enExample)
JP (1) JPS6174305A (enExample)
AU (1) AU580618B2 (enExample)
BR (1) BR8504369A (enExample)
CA (1) CA1244322A (enExample)
DE (1) DE3584061D1 (enExample)
ES (1) ES8707373A1 (enExample)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1244322A (en) * 1984-09-14 1988-11-08 Robert W. Lee Hot pressed permanent magnet having high and low coercivity regions
US6136099A (en) * 1985-08-13 2000-10-24 Seiko Epson Corporation Rare earth-iron series permanent magnets and method of preparation
US5125988A (en) * 1987-03-02 1992-06-30 Seiko Epson Corporation Rare earth-iron system permanent magnet and process for producing the same
US5538565A (en) * 1985-08-13 1996-07-23 Seiko Epson Corporation Rare earth cast alloy permanent magnets and methods of preparation
JP2530641B2 (ja) * 1986-03-20 1996-09-04 日立金属株式会社 磁気異方性ボンド磁石、それに用いる磁粉及びその製造方法
IT1206056B (it) * 1986-06-20 1989-04-05 Seiko Epson Corp Procedimento per la preparazione di magneti permanenti e prodotto ottenuto
US4983232A (en) * 1987-01-06 1991-01-08 Hitachi Metals, Ltd. Anisotropic magnetic powder and magnet thereof and method of producing same
KR900006533B1 (ko) * 1987-01-06 1990-09-07 히다찌 긴조꾸 가부시끼가이샤 이방성 자성분말과 이의 자석 및 이의 제조방법
US5213631A (en) * 1987-03-02 1993-05-25 Seiko Epson Corporation Rare earth-iron system permanent magnet and process for producing the same
US4888506A (en) * 1987-07-09 1989-12-19 Hitachi Metals, Ltd. Voice coil-type linear motor
JPH07105301B2 (ja) * 1987-09-10 1995-11-13 日立金属株式会社 磁気異方性Ｎｄ―Ｆｅ―Ｂ磁石材の製法
JPS6472502A (en) * 1987-09-11 1989-03-17 Hitachi Metals Ltd Permanent magnet for accelerating particle beam
US4859410A (en) * 1988-03-24 1989-08-22 General Motors Corporation Die-upset manufacture to produce high volume fractions of RE-Fe-B type magnetically aligned material
JP3037699B2 (ja) * 1988-09-30 2000-04-24 日立金属株式会社 耐割れ性及び配向性を改善した温間加工磁石ならびにその製造方法
US5098486A (en) * 1989-05-23 1992-03-24 Hitachi Metals, Ltd. Magnetically anisotropic hotworked magnet and method of producing same
US4952251A (en) * 1989-05-23 1990-08-28 Hitachi Metals, Ltd. Magnetically anisotropic hotworked magnet and method of producing same
JP5707934B2 (ja) * 2010-12-27 2015-04-30 トヨタ自動車株式会社 異方性永久磁石の製造方法
JP6330438B2 (ja) * 2014-04-09 2018-05-30 信越化学工業株式会社 希土類焼結磁石の製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS213750B1 (en) * 1979-08-03 1982-04-09 Vaclav Landa Method of making the anizotropic permanent magnets
DE3248846T1 (de) * 1981-07-14 1983-07-07 Hitachi Metals, Ltd., Tokyo Verbundpermanentmagnet fuer die magnetische erregung und verfahren zu seiner herstellung
DE3379131D1 (en) * 1982-09-03 1989-03-09 Gen Motors Corp Re-tm-b alloys, method for their production and permanent magnets containing such alloys
CA1216623A (en) * 1983-05-09 1987-01-13 John J. Croat Bonded rare earth-iron magnets
CA1244322A (en) * 1984-09-14 1988-11-08 Robert W. Lee Hot pressed permanent magnet having high and low coercivity regions

Also Published As

Publication number Publication date
AU580618B2 (en) 1989-01-19
ES8707373A1 (es) 1987-07-16
EP0174735A2 (en) 1986-03-19
EP0174735B1 (en) 1991-09-11
ES546960A0 (es) 1987-07-16
AU4648785A (en) 1986-03-20
DE3584061D1 (de) 1991-10-17
EP0174735A3 (en) 1988-01-20
JPH0315806B2 (enExample) 1991-03-04
JPS6174305A (ja) 1986-04-16
BR8504369A (pt) 1986-07-08

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