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GB1342698A - Samarium-rare earth magnet - Google Patents

Samarium-rare earth magnet

Info

Publication number
GB1342698A
GB1342698A GB1601672A GB1601672A GB1342698A GB 1342698 A GB1342698 A GB 1342698A GB 1601672 A GB1601672 A GB 1601672A GB 1601672 A GB1601672 A GB 1601672A GB 1342698 A GB1342698 A GB 1342698A
Authority
GB
United Kingdom
Prior art keywords
rco
samarium
rare earth
earth magnet
april
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
GB1601672A
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.)
Raytheon Co
Original Assignee
Raytheon 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 Raytheon Co filed Critical Raytheon Co
Publication of GB1342698A publication Critical patent/GB1342698A/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
    • 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
    • H01F1/06—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 in the form of particles, e.g. powder

Landscapes

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

Abstract

1342698 Magnetic material: powder metallurgy RAYTHEON CO 6 April 1972 [6 April 1971] 16016/72 Addition to 1290887 Headings C7A and C7D A magnetic material is composed of a mixture of RCo 5 and R 2 Co 7 (wherein R is one or more of Fa, Pr and Ce). For a composition composed of 60% by weight RCo 5 and balance R 2 Co 7 , or for R34-37À5% Co66-62À5%, Sm can be added to the list of possibilities for R. The material may be made by densifying a compact of particles of less than single domain particle size of the species RCo 5 (e.g. less than 10 microns) when once again R may be Sm. The compact may be formed in a magnetic field; sintered and magnetized along the direction of the field during compaction.
GB1601672A 1971-04-06 1972-04-06 Samarium-rare earth magnet Expired GB1342698A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13177771A 1971-04-06 1971-04-06

Publications (1)

Publication Number Publication Date
GB1342698A true GB1342698A (en) 1974-01-03

Family

ID=22450985

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1601672A Expired GB1342698A (en) 1971-04-06 1972-04-06 Samarium-rare earth magnet

Country Status (8)

Country Link
BE (1) BE771113R (en)
CH (1) CH556203A (en)
DE (2) DE2216581B2 (en)
FR (1) FR2133381A6 (en)
GB (1) GB1342698A (en)
IL (1) IL37885A (en)
IT (1) IT964506B (en)
NL (1) NL7111839A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232165A (en) * 1989-03-22 1990-12-05 Cookson Group Plc Magnetic compositions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232165A (en) * 1989-03-22 1990-12-05 Cookson Group Plc Magnetic compositions

Also Published As

Publication number Publication date
IL37885A (en) 1976-06-30
DE7212872U (en) 1985-04-11
DE2216581B2 (en) 1977-08-04
IT964506B (en) 1974-01-31
NL7111839A (en) 1972-10-10
BE771113R (en) 1971-12-16
DE2216581A1 (en) 1972-11-09
FR2133381A6 (en) 1972-11-24
CH556203A (en) 1974-11-29

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years