GB987636A - Improvements in or relating to permanent magnets - Google Patents

Improvements in or relating to permanent magnets

Info

Publication number
GB987636A
GB987636A GB39025/62A GB3902562A GB987636A GB 987636 A GB987636 A GB 987636A GB 39025/62 A GB39025/62 A GB 39025/62A GB 3902562 A GB3902562 A GB 3902562A GB 987636 A GB987636 A GB 987636A
Authority
GB
United Kingdom
Prior art keywords
magnets
columnar crystal
fast cooling
hours
examples
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
GB39025/62A
Inventor
John Harrison
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.)
Swift Levick Magnets Ltd
Original Assignee
Swift Levick and Sons Ltd
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 Swift Levick and Sons Ltd filed Critical Swift Levick and Sons Ltd
Publication of GB987636A publication Critical patent/GB987636A/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
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and 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

Landscapes

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

Abstract

An anisotropic columnar crystal magnet is formed of an alloy having a composition in the range: .Al.5 -9% .Ni.11 -22% .Co.20 -40% .Cu.0 -6% .Ti.1 - 8% .Nb.0 - 4% .S.0.05-1.0% .Fe and impurities the balance.. Si may also be present in amounts up to 1.0%. S is preferably introduced as ferrous sulphide in the initial charge to be melted. The columnar crystal magnets may be heat treated by solution treatment at 1250 DEG C., fast cooling by air blast to 1000 DEG C., magnetic cooling to 600 DEG C. Examples are also given of application to non-columnar crystal magnets of a similar treatment omitting the fast cooling. The fast cooling may be to black heat at least followed by reheating to 825 DEG C. in a magnetic field. In all examples the magnets were tempered at 590 DEG C. for 48 hours and then at 560 DEG C. for 48 hours.
GB39025/62A 1967-04-17 1962-10-16 Improvements in or relating to permanent magnets Expired GB987636A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63113467A 1967-04-17 1967-04-17

Publications (1)

Publication Number Publication Date
GB987636A true GB987636A (en) 1965-03-31

Family

ID=24529903

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39025/62A Expired GB987636A (en) 1967-04-17 1962-10-16 Improvements in or relating to permanent magnets

Country Status (2)

Country Link
US (1) US3528805A (en)
GB (1) GB987636A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540947A (en) * 1966-10-25 1970-11-17 Sadaichi Komaki Method of manufacturing a permanent magnetic alloy
US4134756A (en) * 1976-09-07 1979-01-16 Hitachi Metals, Ltd. Permanent magnet alloys

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2797161A (en) * 1953-09-03 1957-06-25 Thomas & Skinner Inc Magnet alloy
US3085036A (en) * 1960-03-11 1963-04-09 Ct Magneti Permanenti Monocrystalline permanent magnets and method of making them
US3175901A (en) * 1962-02-07 1965-03-30 U S Magnet & Alloy Corp Permanent magnet and alloy therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540947A (en) * 1966-10-25 1970-11-17 Sadaichi Komaki Method of manufacturing a permanent magnetic alloy
US4134756A (en) * 1976-09-07 1979-01-16 Hitachi Metals, Ltd. Permanent magnet alloys

Also Published As

Publication number Publication date
US3528805A (en) 1970-09-15

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