DE3774333D1 - PERMANENT MAGNETIC MATERIAL AND METHOD FOR THE PRODUCTION. - Google Patents

PERMANENT MAGNETIC MATERIAL AND METHOD FOR THE PRODUCTION.

Info

Publication number
DE3774333D1
DE3774333D1 DE8787108724T DE3774333T DE3774333D1 DE 3774333 D1 DE3774333 D1 DE 3774333D1 DE 8787108724 T DE8787108724 T DE 8787108724T DE 3774333 T DE3774333 T DE 3774333T DE 3774333 D1 DE3774333 D1 DE 3774333D1
Authority
DE
Germany
Prior art keywords
production
magnetic material
permanent magnetic
permanent
magnetic
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 - Fee Related
Application number
DE8787108724T
Other languages
German (de)
Inventor
Kinya Sasaki
Etsuo Otsuki
Tsutomu Otsuka
Teruhiko Fujiwara
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.)
Tokin Corp
Original Assignee
Tokin 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
Priority claimed from JP8902887A external-priority patent/JPS63114939A/en
Application filed by Tokin Corp filed Critical Tokin Corp
Application granted granted Critical
Publication of DE3774333D1 publication Critical patent/DE3774333D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/09—Mixtures of metallic powders
    • 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
DE8787108724T 1986-06-16 1987-06-16 PERMANENT MAGNETIC MATERIAL AND METHOD FOR THE PRODUCTION. Expired - Fee Related DE3774333D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13965086 1986-06-16
JP8902887A JPS63114939A (en) 1986-04-11 1987-04-11 R2t14b-type composite-type magnet material and its production

Publications (1)

Publication Number Publication Date
DE3774333D1 true DE3774333D1 (en) 1991-12-12

Family

ID=26430473

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787108724T Expired - Fee Related DE3774333D1 (en) 1986-06-16 1987-06-16 PERMANENT MAGNETIC MATERIAL AND METHOD FOR THE PRODUCTION.

Country Status (2)

Country Link
EP (1) EP0249973B1 (en)
DE (1) DE3774333D1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5006045A (en) * 1987-12-24 1991-04-09 Seiko Epson Corporation Scroll compressor with reverse rotation speed limiter
JP3047239B2 (en) * 1989-04-14 2000-05-29 日立金属株式会社 Warm-worked magnet and manufacturing method thereof
DE4027598C2 (en) * 1990-06-30 1997-09-11 Vacuumschmelze Gmbh Permanent magnet of type SE-Fe-B and process for its production
US5354354A (en) * 1991-10-22 1994-10-11 Th. Goldschmidt Ag Method for producing single-phase, incongruently melting intermetallic phases
CN1044940C (en) * 1992-08-13 1999-09-01 Ybm麦格奈克斯公司 Method of manufacturing a permanent magnet on the basis of ndfeb
EP0583041B1 (en) * 1992-08-13 1997-02-05 Koninklijke Philips Electronics N.V. Method of manufacturing a permanent magnet on the basis of NdFeB
DE19636285C2 (en) * 1996-09-06 1998-07-16 Vakuumschmelze Gmbh Process for producing an SE-Fe-B permanent magnet
DE19945943B4 (en) * 1999-09-24 2005-06-02 Vacuumschmelze Gmbh Borarme Nd-Fe-B alloy and process for its preparation
DE602004022116D1 (en) * 2003-09-16 2009-09-03 Ntn Toyo Bearing Co Ltd Method for mounting a magnetic encoder
JP4033884B2 (en) * 2003-10-31 2008-01-16 Ｔｄｋ株式会社 Manufacturing method of rare earth sintered magnet
EP1788359B1 (en) 2004-09-10 2011-07-06 NTN Corporation Magnetic encoder and bearing for wheel comprising same
WO2010063143A1 (en) * 2008-12-01 2010-06-10 Zhejiang University Modified nd-fe-b permanent magnet with high corrosion resistance
JP5757394B2 (en) * 2010-07-30 2015-07-29 日立金属株式会社 Rare earth permanent magnet manufacturing method
CN103493159B (en) * 2011-02-21 2016-10-05 丰田自动车株式会社 The manufacture method of rare earth element magnet
JP5572673B2 (en) 2011-07-08 2014-08-13 昭和電工株式会社 R-T-B system rare earth sintered magnet alloy, R-T-B system rare earth sintered magnet alloy manufacturing method, R-T-B system rare earth sintered magnet alloy material, R-T-B system rare earth Sintered magnet, method for producing RTB-based rare earth sintered magnet, and motor
US20160293305A1 (en) * 2013-03-25 2016-10-06 Intermetallics Co., Ltd. Sintered magnet production method
KR101585483B1 (en) * 2015-04-29 2016-01-15 엘지전자 주식회사 Sintered Magnet Based on MnBi Having Improved Heat Stability and Method of Preparing the Same
CN112820528A (en) * 2020-05-06 2021-05-18 廊坊京磁精密材料有限公司 Method for improving coercive force of sintered neodymium iron boron
CN112712955B (en) * 2020-12-23 2023-02-17 安徽大地熊新材料股份有限公司 Sintered neodymium-iron-boron magnet and preparation method thereof
US20230290546A1 (en) * 2022-01-27 2023-09-14 Ford Global Technologies, Llc Reduction of cracks in additively manufactured nd-fe-b magnet

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668283A (en) * 1984-06-25 1987-05-26 Mitsui Toatsu Chemicals, Incorporated Magnetic powder and production process thereof

Also Published As

Publication number Publication date
EP0249973A1 (en) 1987-12-23
EP0249973B1 (en) 1991-11-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: NEC TOKIN CORP., SENDAI, MIYAGI, JP

8339 Ceased/non-payment of the annual fee