DE69007048D1 - Alloy additives in low concentrations for hot-worked Nd-Fe-B magnets. - Google Patents

Alloy additives in low concentrations for hot-worked Nd-Fe-B magnets.

Info

Publication number
DE69007048D1
DE69007048D1 DE90203171T DE69007048T DE69007048D1 DE 69007048 D1 DE69007048 D1 DE 69007048D1 DE 90203171 T DE90203171 T DE 90203171T DE 69007048 T DE69007048 T DE 69007048T DE 69007048 D1 DE69007048 D1 DE 69007048D1
Authority
DE
Germany
Prior art keywords
magnets
worked
hot
low concentrations
alloy additives
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
DE90203171T
Other languages
German (de)
Other versions
DE69007048T2 (en
Inventor
Earl G Brewer
Carlon D Fuerst
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
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Application granted granted Critical
Publication of DE69007048D1 publication Critical patent/DE69007048D1/en
Publication of DE69007048T2 publication Critical patent/DE69007048T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0433—Nickel- or cobalt-based alloys
    • C22C1/0441—Alloys based on intermetallic compounds of the type rare earth - Co, Ni
    • 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
DE1990607048 1989-12-19 1990-12-01 Alloy additives in low concentrations for hot-worked Nd-Fe-B magnets. Expired - Fee Related DE69007048T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US45343489A 1989-12-19 1989-12-19

Publications (2)

Publication Number Publication Date
DE69007048D1 true DE69007048D1 (en) 1994-04-07
DE69007048T2 DE69007048T2 (en) 1994-06-01

Family

ID=23800570

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1990607048 Expired - Fee Related DE69007048T2 (en) 1989-12-19 1990-12-01 Alloy additives in low concentrations for hot-worked Nd-Fe-B magnets.

Country Status (4)

Country Link
EP (1) EP0434113B1 (en)
JP (1) JPH0739618B2 (en)
CA (1) CA2023924A1 (en)
DE (1) DE69007048T2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103282976B (en) * 2010-12-27 2017-02-08 Tdk株式会社 Magnetic body
JP5729051B2 (en) * 2011-03-18 2015-06-03 Tdk株式会社 R-T-B rare earth sintered magnet
CN112863848B (en) * 2021-01-15 2023-04-11 烟台东星磁性材料股份有限公司 Preparation method of high-coercivity sintered neodymium-iron-boron magnet

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63272009A (en) * 1987-04-30 1988-11-09 Daido Steel Co Ltd Manufacture of rare earth-fe-b magnet
JPH01139738A (en) * 1987-11-27 1989-06-01 Hitachi Metals Ltd Method and apparatus for magnetic material having magnetic anisotropy
JPH01175705A (en) * 1987-12-29 1989-07-12 Daido Steel Co Ltd Manufacture of rare earth magnet
JPH01196104A (en) * 1988-02-01 1989-08-07 Tdk Corp Manufacture of rare earth alloy magnet
US4950450A (en) * 1988-07-21 1990-08-21 Eastman Kodak Company Neodymium iron boron magnets in a hot consolidation process of making the same
US4881985A (en) * 1988-08-05 1989-11-21 General Motors Corporation Method for producing anisotropic RE-FE-B type magnetically aligned material

Also Published As

Publication number Publication date
DE69007048T2 (en) 1994-06-01
EP0434113A3 (en) 1992-04-08
EP0434113B1 (en) 1994-03-02
EP0434113A2 (en) 1991-06-26
CA2023924A1 (en) 1991-06-20
JPH0739618B2 (en) 1995-05-01
JPH03267346A (en) 1991-11-28

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee