GB660591A - Improvements in the manufacture of anisotropic permanent magnets and in alloys therefor - Google Patents

Improvements in the manufacture of anisotropic permanent magnets and in alloys therefor

Info

Publication number
GB660591A
GB660591A GB2437648A GB2437648A GB660591A GB 660591 A GB660591 A GB 660591A GB 2437648 A GB2437648 A GB 2437648A GB 2437648 A GB2437648 A GB 2437648A GB 660591 A GB660591 A GB 660591A
Authority
GB
United Kingdom
Prior art keywords
per cent
alloy
permanent magnets
anisotropic permanent
manufacture
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
GB2437648A
Inventor
William Thomas Dean
John Viney Harding
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Priority to GB2437648A priority Critical patent/GB660591A/en
Priority to DE1949P0054872 priority patent/DE809440C/en
Publication of GB660591A publication Critical patent/GB660591A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/78—Combined heat-treatments not provided for above
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

An iron-base alloy has the following position Al 6-11 per cent; Ni 10-20 per cent, Co 16-30 per cent, Nb 0.5-10 per cent, Cu up to 7 per cent, Ti up to 5 per cent, Fe, and impurities, the remainder. The alloy may contain one or more of the elements W, Cr, Mo, V, Zr, Ca, Ce, Ta and Si up to 0.5 per cent of each and less than 1.0 per cent in total. Anisotropic permanent magnets may be produced by subjecting the alloy to the action of a magnetic field while cooling through a temperature range from above the Curie temperature down to about 600 DEG C. followed by an ageing treatment at 600 DEG C. or thereabouts. The alloy to be subjected to this treatment is preferably cast in a mould and caused to solidify under conditions in which heat is abstracted in substantially one direction only. The heat-treated alloy is subsequently magnetized in the direction of the magnetic field applied during cooling. Specifications 522,731 and 660,580 are referred to.
GB2437648A 1948-09-16 1948-09-16 Improvements in the manufacture of anisotropic permanent magnets and in alloys therefor Expired GB660591A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2437648A GB660591A (en) 1948-09-16 1948-09-16 Improvements in the manufacture of anisotropic permanent magnets and in alloys therefor
DE1949P0054872 DE809440C (en) 1948-09-16 1949-09-14 Anisotropic permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2437648A GB660591A (en) 1948-09-16 1948-09-16 Improvements in the manufacture of anisotropic permanent magnets and in alloys therefor

Publications (1)

Publication Number Publication Date
GB660591A true GB660591A (en) 1951-11-07

Family

ID=10210754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2437648A Expired GB660591A (en) 1948-09-16 1948-09-16 Improvements in the manufacture of anisotropic permanent magnets and in alloys therefor

Country Status (2)

Country Link
DE (1) DE809440C (en)
GB (1) GB660591A (en)

Also Published As

Publication number Publication date
DE809440C (en) 1951-07-30

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