EP0124655A3 - Isotropic permanent magnets and process for producing same - Google Patents

Isotropic permanent magnets and process for producing same Download PDF

Info

Publication number
EP0124655A3
EP0124655A3 EP83113252A EP83113252A EP0124655A3 EP 0124655 A3 EP0124655 A3 EP 0124655A3 EP 83113252 A EP83113252 A EP 83113252A EP 83113252 A EP83113252 A EP 83113252A EP 0124655 A3 EP0124655 A3 EP 0124655A3
Authority
EP
European Patent Office
Prior art keywords
permanent magnets
producing same
isotropic permanent
isotropic
producing
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.)
Granted
Application number
EP83113252A
Other versions
EP0124655A2 (en
EP0124655B1 (en
Inventor
Setsuo Hanazonodanchi 14-106 Fujimura
Masato Sagawa
Yutaka Matsuura
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.)
Neomax Co Ltd
Original Assignee
Sumitomo Special Metals 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26420168&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0124655(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP58079096A external-priority patent/JPS59204209A/en
Priority claimed from JP58079098A external-priority patent/JPS59204211A/en
Application filed by Sumitomo Special Metals Co Ltd filed Critical Sumitomo Special Metals Co Ltd
Publication of EP0124655A2 publication Critical patent/EP0124655A2/en
Publication of EP0124655A3 publication Critical patent/EP0124655A3/en
Application granted granted Critical
Publication of EP0124655B1 publication Critical patent/EP0124655B1/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
    • H01F1/0577—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
EP19830113252 1983-05-06 1983-12-30 Isotropic permanent magnets and process for producing same Expired EP0124655B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP58079096A JPS59204209A (en) 1983-05-06 1983-05-06 Isotropic permanent magnet and manufacture thereof
JP79098/83 1983-05-06
JP79096/83 1983-05-06
JP58079098A JPS59204211A (en) 1983-05-06 1983-05-06 Isotropic permanent magnet and manufacture thereof

Publications (3)

Publication Number Publication Date
EP0124655A2 EP0124655A2 (en) 1984-11-14
EP0124655A3 true EP0124655A3 (en) 1986-09-10
EP0124655B1 EP0124655B1 (en) 1989-09-20

Family

ID=26420168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830113252 Expired EP0124655B1 (en) 1983-05-06 1983-12-30 Isotropic permanent magnets and process for producing same

Country Status (5)

Country Link
EP (1) EP0124655B1 (en)
CA (1) CA1277159C (en)
DE (1) DE3380612D1 (en)
HK (1) HK68390A (en)
SG (1) SG49090G (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1271394A (en) * 1985-02-25 1990-07-10 Karen S. Canavan Enhanced remanence permanent magnetic alloy and bodies thereof and method of preparing same
US4954186A (en) * 1986-05-30 1990-09-04 Union Oil Company Of California Rear earth-iron-boron permanent magnets containing aluminum
US4778542A (en) * 1986-07-15 1988-10-18 General Motors Corporation High energy ball milling method for making rare earth-transition metal-boron permanent magnets
US4829277A (en) * 1986-11-20 1989-05-09 General Motors Corporation Isotropic rare earth-iron field magnets for magnetic resonance imaging
US4849035A (en) * 1987-08-11 1989-07-18 Crucible Materials Corporation Rare earth, iron carbon permanent magnet alloys and method for producing the same
DE4027598C2 (en) * 1990-06-30 1997-09-11 Vacuumschmelze Gmbh Permanent magnet of type SE-Fe-B and process for its production
DE4135403C2 (en) * 1991-10-26 1994-06-16 Vacuumschmelze Gmbh SE-Fe-B permanent magnet and process for its manufacture
DE19636283A1 (en) * 1996-09-06 1998-03-12 Vacuumschmelze Gmbh Process for manufacturing a SE-FE-B permanent magnet
DE19636285C2 (en) * 1996-09-06 1998-07-16 Vakuumschmelze Gmbh Process for producing an SE-Fe-B permanent magnet
DE19636284C2 (en) * 1996-09-06 1998-07-16 Vacuumschmelze Gmbh SE-Fe-B permanent magnet and process for its manufacture
DE19945942C2 (en) * 1999-09-24 2003-07-17 Vacuumschmelze Gmbh Process for the production of permanent magnets from a low-boron Nd-Fe-B alloy
DE19945943B4 (en) * 1999-09-24 2005-06-02 Vacuumschmelze Gmbh Borarme Nd-Fe-B alloy and process for its preparation
DE19962232B4 (en) * 1999-12-22 2006-05-04 Vacuumschmelze Gmbh Method for producing rod-shaped permanent magnets
US6966953B2 (en) * 2002-04-29 2005-11-22 University Of Dayton Modified sintered RE-Fe-B-type, rare earth permanent magnets with improved toughness
US6994755B2 (en) * 2002-04-29 2006-02-07 University Of Dayton Method of improving toughness of sintered RE-Fe-B-type, rare earth permanent magnets
CN1934283B (en) 2004-06-22 2011-07-27 信越化学工业株式会社 R-Fe-B-based rare earth permanent magnet material
GB0525766D0 (en) * 2005-12-19 2006-01-25 Dymo Nv Magnetic tape
CN110957092B (en) * 2019-12-19 2021-06-11 厦门钨业股份有限公司 R-T-B series magnet material, raw material composition, preparation method and application

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126179B1 (en) * 1983-05-21 1988-12-14 Sumitomo Special Metals Co., Ltd. Process for producing permanent magnet materials
EP0101552B1 (en) * 1982-08-21 1989-08-09 Sumitomo Special Metals Co., Ltd. Magnetic materials, permanent magnets and methods of making those

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0101552B1 (en) * 1982-08-21 1989-08-09 Sumitomo Special Metals Co., Ltd. Magnetic materials, permanent magnets and methods of making those
EP0126179B1 (en) * 1983-05-21 1988-12-14 Sumitomo Special Metals Co., Ltd. Process for producing permanent magnet materials

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON MAGNETICS, vol. MAG-18, no. 6, November 1982, pages 1448-1450, IEEE, New York, US; N.C. KOON et al.: "Composition dependence of the coercive force and microstructure of crystallized amorphous (FexB1-x)0.9Tb0.05La0.06 alloys" *

Also Published As

Publication number Publication date
HK68390A (en) 1990-09-07
EP0124655A2 (en) 1984-11-14
SG49090G (en) 1990-08-17
DE3380612D1 (en) 1989-10-26
CA1277159C (en) 1990-12-04
EP0124655B1 (en) 1989-09-20

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