GB723496A - Improvements in or relating to the manufacture of permanent magnets - Google Patents

Improvements in or relating to the manufacture of permanent magnets

Info

Publication number
GB723496A
GB723496A GB2695552A GB2695552A GB723496A GB 723496 A GB723496 A GB 723496A GB 2695552 A GB2695552 A GB 2695552A GB 2695552 A GB2695552 A GB 2695552A GB 723496 A GB723496 A GB 723496A
Authority
GB
United Kingdom
Prior art keywords
water
distilled water
powder
iron
oct
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
GB2695552A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2695552A priority Critical patent/GB723496A/en
Publication of GB723496A publication Critical patent/GB723496A/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
    • H01F1/06—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)
  • Hard Magnetic Materials (AREA)

Abstract

723,496. Magnetic structures. GENERAL ELECTRIC CO., Ltd., TOMBS, N. C., and LAMB, W. Oct. 5, 1953 [Oct. 27, 1952], No. 26955/52. Class 38 (2). In making permanent magnets, magnetizable metallic powder which consists mainly of one or more of the metals iron, cobalt and nickel, the particles being of colloidal dimensions, and therefore pyrophoric, is covered with distilled water when freshly prepared, the water being removed part of the way through the agglomeration process. The water is preferably deaerated and kept in contact with the powder for not more than three hours. A suitable iron powder may be produced by decomposition and reduction of iron formate, oxalate or oxides under hydrogen, the distilled water being initially 'present or subsequently run into the vessel. Excess water is drained away and the residual thick paste compressed at 75 tons/square inch. A small proportion of other material, such as calcium oxide or carbonate may be present. Particulars are given of magnetic properties of material collected under distilled water, and for comparison, under benzene, and coated with " Bakelite " (Registered Trade Mark). Specification 590,392 is referred to.
GB2695552A 1953-10-05 1953-10-05 Improvements in or relating to the manufacture of permanent magnets Expired GB723496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2695552A GB723496A (en) 1953-10-05 1953-10-05 Improvements in or relating to the manufacture of permanent magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2695552A GB723496A (en) 1953-10-05 1953-10-05 Improvements in or relating to the manufacture of permanent magnets

Publications (1)

Publication Number Publication Date
GB723496A true GB723496A (en) 1955-02-09

Family

ID=10251836

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2695552A Expired GB723496A (en) 1953-10-05 1953-10-05 Improvements in or relating to the manufacture of permanent magnets

Country Status (1)

Country Link
GB (1) GB723496A (en)

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