GB681300A - Improvements in and relating to permanent magnets - Google Patents

Improvements in and relating to permanent magnets

Info

Publication number
GB681300A
GB681300A GB10169/50A GB1016950A GB681300A GB 681300 A GB681300 A GB 681300A GB 10169/50 A GB10169/50 A GB 10169/50A GB 1016950 A GB1016950 A GB 1016950A GB 681300 A GB681300 A GB 681300A
Authority
GB
United Kingdom
Prior art keywords
per cent
aluminium
cobalt
nickel
iron
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
GB10169/50A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB681300A publication Critical patent/GB681300A/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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • 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

Abstract

A powder mixture for forming a permanent magnet for powder metallurgy comprises 6-11 per cent aluminium, 16-30 per cent cobalt, 12-20 per cent nickel, 3 per cent copper and the balance iron, the aluminium being present as an aluminium-cobalt alloy containing 67-85 per cent cobalt, as an aluminium-nickel alloy containing 64-80 per cent nickel or as an aluminium-iron alloy containing at least 82 per ent iron. The preferred proportions are 8.5 per cent aluminium, 25 per cent cobalt, 14 per cent nickel, 3 per cent copper and the balance iron.
GB10169/50A 1949-05-04 1950-04-25 Improvements in and relating to permanent magnets Expired GB681300A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US681300XA 1949-05-04 1949-05-04

Publications (1)

Publication Number Publication Date
GB681300A true GB681300A (en) 1952-10-22

Family

ID=22080594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10169/50A Expired GB681300A (en) 1949-05-04 1950-04-25 Improvements in and relating to permanent magnets

Country Status (1)

Country Link
GB (1) GB681300A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131047A (en) * 1982-11-29 1984-06-13 Kanto Denka Kogyo Kk Ferromagnetic metallic powders useful for magnetic recording and processes for producing said metallic powders

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131047A (en) * 1982-11-29 1984-06-13 Kanto Denka Kogyo Kk Ferromagnetic metallic powders useful for magnetic recording and processes for producing said metallic powders

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