GB1290887A - - Google Patents

Info

Publication number
GB1290887A
GB1290887A GB5429869A GB5429869A GB1290887A GB 1290887 A GB1290887 A GB 1290887A GB 5429869 A GB5429869 A GB 5429869A GB 5429869 A GB5429869 A GB 5429869A GB 1290887 A GB1290887 A GB 1290887A
Authority
GB
United Kingdom
Prior art keywords
nov
magnet
magnetic field
compacting
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
Application number
GB5429869A
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 filed Critical
Publication of GB1290887A publication Critical patent/GB1290887A/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
    • 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

Abstract

1290887 Sintered magnetic alloys RAYTHEON CO 5 Nov 1969 [22 Nov 1968] 54298/69 Headings C7A and C7D A magnetic material consists, apart from impurities, of cobalt and samarium in amounts between the proportions corresponding to SmCo 5 and Sm 2 Co 7 . The material may be made by melting the constituents together (e.g. under an inert gas such as He), casting and coating the melt, grinding the ingot, compacting the powder in the presence of a magnetic field and preferably with vibration during compaction. The magnet so formed may then be demagnetized by a reverse magnetic field, sintering at about 1100‹C. in an inert atmosphere (e.g. for about 1 hour) and then cooling to room temperature. The magnet is then remagnetized in the same direction as used in the compacting step or with reversed polarity.
GB5429869A 1968-11-22 1969-11-05 Expired GB1290887A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77804168A 1968-11-22 1968-11-22

Publications (1)

Publication Number Publication Date
GB1290887A true GB1290887A (en) 1972-09-27

Family

ID=25112124

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5429869A Expired GB1290887A (en) 1968-11-22 1969-11-05

Country Status (8)

Country Link
JP (2) JPS4945973B1 (en)
BE (1) BE741459A (en)
CH (1) CH519361A (en)
DE (2) DE6943845U (en)
FR (1) FR2023852A1 (en)
GB (1) GB1290887A (en)
IL (1) IL33202A (en)
NL (1) NL6917567A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655463A (en) * 1970-04-30 1972-04-11 Gen Electric Sintered cobalt-rare earth intermetallic process using solid sintering additive
US3844850A (en) * 1972-04-17 1974-10-29 Gen Electric Large grain cobalt-samarium intermetallic permanent magnet material and process
JPS51122405A (en) * 1973-03-13 1976-10-26 Seiko Epson Corp Pickup cartridge
JPS5340442B1 (en) * 1973-09-10 1978-10-27
CZ2014766A3 (en) * 2014-11-07 2016-02-10 Vysoká škola chemicko- technologická v Praze Production of nanostructured powders of cobalt alloys by two-stage mechanical alloy building

Also Published As

Publication number Publication date
DE6943845U (en) 1971-09-30
NL6917567A (en) 1970-05-26
BE741459A (en) 1970-04-16
IL33202A (en) 1974-03-14
DE1956740B2 (en) 1973-11-29
DE1956740A1 (en) 1970-06-04
FR2023852A1 (en) 1970-08-21
JPS559934B1 (en) 1980-03-13
JPS4945973B1 (en) 1974-12-07
CH519361A (en) 1972-02-29
IL33202A0 (en) 1969-12-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years