GB1343536A - Liquid sintered cobalt-rare earth intermetallic product - Google Patents

Liquid sintered cobalt-rare earth intermetallic product

Info

Publication number
GB1343536A
GB1343536A GB1087871*[A GB1087871A GB1343536A GB 1343536 A GB1343536 A GB 1343536A GB 1087871 A GB1087871 A GB 1087871A GB 1343536 A GB1343536 A GB 1343536A
Authority
GB
United Kingdom
Prior art keywords
rare earth
alloy
liquid
earth intermetallic
product
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
GB1087871*[A
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Publication of GB1343536A publication Critical patent/GB1343536A/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
    • H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
    • H01F1/0557—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together sintered
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/07—Alloys based on nickel or cobalt based on cobalt

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)

Abstract

1343536 Cobalt - rare earth alloys GENERAL ELECTRIC CO 22 April 1971 [30 April 1970] 10878/71 Headings C7A and C7D A sintered product comprises a major amount of Co 5 RE (RE being rare earth, including Y) and up to 35 per cent of a Co-RE phase richer in RE than the Co 5 RE, the surface of the product being liquid-phase sintered smooth, i.e. the particles are rounded rather than angular. The alloy may be produced by pressing a mixture of Co 5 RE powder and a powder of a Co-RE alloy, richer in RE than Co 5 RE and sintering at a temperature at which the Co-RE alloy is at least partly liquid. The pressing may take place in a magnetic field. Sintering may be at 950‹-1200‹C. in an inert atmosphere.
GB1087871*[A 1970-04-30 1971-04-22 Liquid sintered cobalt-rare earth intermetallic product Expired GB1343536A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3334770A 1970-04-30 1970-04-30

Publications (1)

Publication Number Publication Date
GB1343536A true GB1343536A (en) 1974-01-10

Family

ID=21869882

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1087871*[A Expired GB1343536A (en) 1970-04-30 1971-04-22 Liquid sintered cobalt-rare earth intermetallic product

Country Status (6)

Country Link
US (1) US3655464A (en)
JP (1) JPS5230451B1 (en)
CA (1) CA929383A (en)
DE (1) DE2121514B2 (en)
GB (1) GB1343536A (en)
NL (1) NL174571C (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3919004A (en) * 1970-04-30 1975-11-11 Gen Electric Liquid sintered cobalt-rare earth intermetallic product
US3892603A (en) * 1971-09-01 1975-07-01 Raytheon Co Method of making magnets
US3905839A (en) * 1971-12-17 1975-09-16 Gen Electric Liquid sintered cobalt-rare earth intermetallic product
US3798391A (en) * 1972-06-22 1974-03-19 Gen Electric Movable magnet loudspeaker
US3909647A (en) * 1973-06-22 1975-09-30 Bendix Corp Rotor assembly for permanent magnet generator
CA990772A (en) * 1973-09-24 1976-06-08 Eric Whiteley Permanent magnet field structure for dynamoelectric machines
US3887395A (en) * 1974-01-07 1975-06-03 Gen Electric Cobalt-rare earth magnets comprising sintered products bonded with cobalt-rare earth bonding agents
US3933535A (en) * 1974-01-28 1976-01-20 General Electric Company Method for producing large and/or complex permanent magnet structures
JPS5510128B2 (en) * 1974-02-04 1980-03-14
CH601484A5 (en) * 1974-12-18 1978-07-14 Bbc Brown Boveri & Cie
US4092184A (en) * 1975-10-08 1978-05-30 General Electric Company Method of preparing and installing cobalt-rare earth permanent magnets
US4857118A (en) * 1986-10-13 1989-08-15 U.S. Philips Corporation Method of manufacturing a permanent magnet
US6696015B2 (en) * 1999-03-03 2004-02-24 Sumitomo Special Metals Co., Ltd. Method for producing rare-earth magnet

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425828A (en) * 1966-03-11 1969-02-04 Coast Metals Inc Production of cobalt strip and the like
NL6608335A (en) * 1966-06-16 1967-12-18
US3424578A (en) * 1967-06-05 1969-01-28 Us Air Force Method of producing permanent magnets of rare earth metals containing co,or mixtures of co,fe and mn

Also Published As

Publication number Publication date
JPS5230451B1 (en) 1977-08-08
NL174571B (en) 1984-02-01
DE2121514B2 (en) 1980-12-04
US3655464A (en) 1972-04-11
DE2121514A1 (en) 1971-11-18
NL7105959A (en) 1971-11-02
CA929383A (en) 1973-07-03
NL174571C (en) 1984-07-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee