GB439543A - Improvements in or relating to permanent magnets and alloys therefor - Google Patents

Improvements in or relating to permanent magnets and alloys therefor

Info

Publication number
GB439543A
GB439543A GB1546335A GB1546335A GB439543A GB 439543 A GB439543 A GB 439543A GB 1546335 A GB1546335 A GB 1546335A GB 1546335 A GB1546335 A GB 1546335A GB 439543 A GB439543 A GB 439543A
Authority
GB
United Kingdom
Prior art keywords
per cent
permanent magnets
relating
alloys
cobalt
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
GB1546335A
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 and Sons 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
Priority to GB1546335A priority Critical patent/GB439543A/en
Publication of GB439543A publication Critical patent/GB439543A/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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper

Landscapes

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

Abstract

Permanent magnets are made by casting an iron alloy containing about 7-20 per cent of aluminium, 10-25 per cent of nickel, 1-15 per cent of copper, and over 15 up to about 35 per cent of cobalt, with or without up to a total of 5 per cent of one or more of the elements chromium, manganese, molybdenum, silicon, uranium, vanadium, tungsten, silver, tin, tantalum, and zirconium, and less than 1 per cent of carbon, cooling the casting at a moderate rate, for example in still air or in a furnace, from 850-1350 DEG C., preferably from 1250 DEG C., and thereafter hardening it at 550-725 DEG C., preferably 600 DEG C. Magnets may also be made from alloys comprising over 20 and up to about 35 per cent of cobalt, and the above stated proportions of other elements. Specification 431,660 is referred to.
GB1546335A 1935-05-28 1935-05-28 Improvements in or relating to permanent magnets and alloys therefor Expired GB439543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1546335A GB439543A (en) 1935-05-28 1935-05-28 Improvements in or relating to permanent magnets and alloys therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1546335A GB439543A (en) 1935-05-28 1935-05-28 Improvements in or relating to permanent magnets and alloys therefor

Publications (1)

Publication Number Publication Date
GB439543A true GB439543A (en) 1935-12-09

Family

ID=10059565

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1546335A Expired GB439543A (en) 1935-05-28 1935-05-28 Improvements in or relating to permanent magnets and alloys therefor

Country Status (1)

Country Link
GB (1) GB439543A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428205A (en) * 1937-09-27 1947-09-30 Dannohl Walter Permanent magnet alloy
US2546047A (en) * 1948-04-13 1951-03-20 Gen Electric Sintered anisotropic alnico magnet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428205A (en) * 1937-09-27 1947-09-30 Dannohl Walter Permanent magnet alloy
US2546047A (en) * 1948-04-13 1951-03-20 Gen Electric Sintered anisotropic alnico magnet

Similar Documents

Publication Publication Date Title
GB439543A (en) Improvements in or relating to permanent magnets and alloys therefor
GB473147A (en) Improvements in or relating to the electrodeposition of zinc
GB496774A (en) Improvements in or relating to permanent magnets and alloys therefor
GB443821A (en) Improvements in the manufacture of cobalt-tungsten-chromium alloys
GB996804A (en) Aluminium alloys
GB476702A (en) Improvements in or relating to the manufacture of permanent magnets
GB522050A (en) Aluminium alloy
GB348641A (en) Improvements relating to alloys
GB475373A (en) An aluminium alloy
GB489477A (en) Improvements in and relating to x-ray tubes
GB470248A (en) Improvements in alloys for bearings
GB461534A (en) Improvements in and relating to electrical heating elements
GB468424A (en) A cast-iron alloy for chill casting
GB391984A (en) Improvements in hard alloys
GB446894A (en) Improvements in or relating to alloys for permanent magnets
GB462248A (en) Improvements in permanent magnets
GB468001A (en) Improvements in aluminium alloys
GB378508A (en) Improvements relating to cast iron
GB431660A (en) Improvements in or relating to alloys for permanent magnets and to a method of making magnets therefrom
GB459319A (en) Improvements in electric resistance alloys
GB458549A (en) Improvements in and relating to aluminium alloys
GB652636A (en) Improvements in or relating to aluminium base alloys
GB408833A (en) Improvements in and relating to the production of electrical heating elements and utensils for use at high temperatures
GB440788A (en) Improved corrosion-resistant alloys
GB431975A (en) Improvements relating to magnetic iron alloys and method of manufacturing same