GB1398588A - Permanent magnets and the production thereof - Google Patents

Permanent magnets and the production thereof

Info

Publication number
GB1398588A
GB1398588A GB5715672A GB5715672A GB1398588A GB 1398588 A GB1398588 A GB 1398588A GB 5715672 A GB5715672 A GB 5715672A GB 5715672 A GB5715672 A GB 5715672A GB 1398588 A GB1398588 A GB 1398588A
Authority
GB
United Kingdom
Prior art keywords
solder
mixture
cobalt
mmco
dec
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
GB5715672A
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.)
Evonik Operations GmbH
Original Assignee
TH Goldschmidt AG
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 TH Goldschmidt AG filed Critical TH Goldschmidt AG
Publication of GB1398588A publication Critical patent/GB1398588A/en
Expired 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
    • H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
    • H01F1/0558—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together bonded together

Landscapes

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

Abstract

1398588 Sintering cobalt-rare earth materials TH GOLDSCHMIDT AG 11 Dec 1972 [14 Dec 1971] 57156/72 Headings C7A and C7D A permanent magnet material comprises a sintered mixture of a cobalt-rare earth alloy bonded by at least 10 per cent by weight of a metallic solder which has a melting point below 400‹C. Exemplified alloys include SmCo 5 , PrCo 5 , MMCo 5 (MM=cerium mischmetal) MMCo 3 Cu 2 and Sm Co 3.5 CuFe 0.5 ; manganese and nickel can also be used as partial replacement for cobalt Exemplified binders include Sn-Pb solder; Sn or Pb alone or modified by Sb, Ag or In; In-rich solder; and Woods metal (a solder alloy of Sn/Pb/Bi/Cd). The magnetic powders may be coated with Zn or Sn prior to mixing with the binder. The step of heating the powder mixture to above the melting- point of the binder may be preceded by applying a magnetic field to orientate the magnetic particles and/or by compacting the mixture. The mixture may also be heated and compacted simultaneously. Liquid solid or gaseous fluxes may be incorporated prior to the sintering.
GB5715672A 1971-12-14 1972-12-11 Permanent magnets and the production thereof Expired GB1398588A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20786771A 1971-12-14 1971-12-14

Publications (1)

Publication Number Publication Date
GB1398588A true GB1398588A (en) 1975-06-25

Family

ID=22772304

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5715672A Expired GB1398588A (en) 1971-12-14 1972-12-11 Permanent magnets and the production thereof

Country Status (9)

Country Link
JP (1) JPS5550099B2 (en)
AT (1) AT325866B (en)
CA (1) CA969076A (en)
CH (1) CH582410A5 (en)
DD (1) DD100891A5 (en)
DE (1) DE2258780A1 (en)
FR (1) FR2163611B1 (en)
GB (1) GB1398588A (en)
NL (1) NL161288C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2460774B (en) * 2007-12-27 2012-09-12 Vacuumschmeize Gmbh & Co Kg Composite article with magnetocalorically active material and method for its production
GB2482091B (en) * 2009-09-21 2013-07-17 Rod F Soderberg A composite material including magnetic particles which provides structural and magnetic capabilities
US20210272751A1 (en) * 2020-02-27 2021-09-02 Toyota Jidosha Kabushiki Kaisha Production method of rare earth magnet

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH564837A5 (en) * 1973-06-29 1975-07-31 Bbc Brown Boveri & Cie
JPS5812331B2 (en) * 1974-10-25 1983-03-08 セイコーエプソン株式会社 intermetallic compound magnet
CH586954A5 (en) * 1975-07-24 1977-04-15 Bbc Brown Boveri & Cie
JPS5245523A (en) * 1975-10-08 1977-04-11 Seiko Instr & Electronics Ltd Rare earths-cobalt magnet and its production process
DE3505481A1 (en) * 1985-02-16 1986-08-28 MTU Motoren- und Turbinen-Union München GmbH, 8000 München SINTER PROCEDURE
DE3687680T2 (en) * 1985-09-30 1993-07-08 Toshiba Kawasaki Kk USE OF POLYCRYSTALLINE MAGNETIC SUBSTANCES FOR MAGNETIC COOLING.
JPS62284027A (en) * 1986-04-30 1987-12-09 Tohoku Metal Ind Ltd Manufacture of rare-earth magnet
JPS62284028A (en) * 1986-04-30 1987-12-09 Tohoku Metal Ind Ltd Manufacture of rare-earth magnet
DE102012218498A1 (en) * 2012-10-11 2014-04-17 Siemens Aktiengesellschaft Dynamoelectric machine with a multi-pole rotor with permanent magnets and their manufacture
KR102077147B1 (en) * 2017-09-29 2020-02-13 도요타 지도샤（주） Rare-earth magnet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2460774B (en) * 2007-12-27 2012-09-12 Vacuumschmeize Gmbh & Co Kg Composite article with magnetocalorically active material and method for its production
US8551210B2 (en) 2007-12-27 2013-10-08 Vacuumschmelze Gmbh & Co. Kg Composite article with magnetocalorically active material and method for its production
US9666340B2 (en) 2007-12-27 2017-05-30 Vacuumschmelze Gmbh & Co. Kg Composite article with magnetocalorically active material and method for its production
GB2482091B (en) * 2009-09-21 2013-07-17 Rod F Soderberg A composite material including magnetic particles which provides structural and magnetic capabilities
US20210272751A1 (en) * 2020-02-27 2021-09-02 Toyota Jidosha Kabushiki Kaisha Production method of rare earth magnet

Also Published As

Publication number Publication date
CH582410A5 (en) 1976-11-30
NL161288B (en) 1979-08-15
DD100891A5 (en) 1973-10-12
AT325866B (en) 1975-11-10
JPS4866524A (en) 1973-09-12
FR2163611B1 (en) 1976-08-20
CA969076A (en) 1975-06-10
ATA1065272A (en) 1975-01-15
NL161288C (en) 1980-01-15
DE2258780A1 (en) 1973-06-28
JPS5550099B2 (en) 1980-12-16
FR2163611A1 (en) 1973-07-27
NL7217038A (en) 1973-06-18

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee