GB522731A - Improvements in or relating to permanent magnets and processes of treating alloys for such magnets - Google Patents

Improvements in or relating to permanent magnets and processes of treating alloys for such magnets

Info

Publication number
GB522731A
GB522731A GB3573038A GB3573038A GB522731A GB 522731 A GB522731 A GB 522731A GB 3573038 A GB3573038 A GB 3573038A GB 3573038 A GB3573038 A GB 3573038A GB 522731 A GB522731 A GB 522731A
Authority
GB
United Kingdom
Prior art keywords
per cent
alloys
cooling
magnets
permanent magnets
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
GB3573038A
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
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 filed Critical Philips Gloeilampenfabrieken NV
Priority to GB3573038A priority Critical patent/GB522731A/en
Publication of GB522731A publication Critical patent/GB522731A/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

Landscapes

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

Abstract

522,731. Alloys; annealing &c. MEYER, L. W. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken.). Dec. 7, 1938, No. 35730.. Drawings to Specification. [Classes 72 and 82 (i)] Permanent magnets having anisotropic properties are made from iron alloys containing 16-30 per cent. of cobalt, 12-20 per cent. of nickel, and 6-11 per cent. of aluminium, with or without up to 5 per cent. of titanium, and up to 7 per cent. of copper, and with or without the addition of other elements such as silicon, vanadium, antimony, tin, sulphur, chromium, manganese, calcium and tungsten, by cooling them from a high temperature, for example - 1200‹C., while subjected to the action of a magnetic field, preferably in a range between the curie point and about 150‹C. below. The cooling may be effected at not over 10‹C. per second, and the alloy may thereafter be aged by a method in which the cooling from 700‹C. to 500‹C. is effected in stages, the alloys being kept at the successively decreasing temperatures for increasing times.
GB3573038A 1938-12-07 1938-12-07 Improvements in or relating to permanent magnets and processes of treating alloys for such magnets Expired GB522731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3573038A GB522731A (en) 1938-12-07 1938-12-07 Improvements in or relating to permanent magnets and processes of treating alloys for such magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3573038A GB522731A (en) 1938-12-07 1938-12-07 Improvements in or relating to permanent magnets and processes of treating alloys for such magnets

Publications (1)

Publication Number Publication Date
GB522731A true GB522731A (en) 1940-06-26

Family

ID=10380948

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3573038A Expired GB522731A (en) 1938-12-07 1938-12-07 Improvements in or relating to permanent magnets and processes of treating alloys for such magnets

Country Status (1)

Country Link
GB (1) GB522731A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442762A (en) * 1943-09-09 1948-06-08 Bell Telephone Labor Inc Methods of improving the magnetic quality of anisotropic permanent magnets containing iron, nickel, cobalt, and aluminum
US2482364A (en) * 1941-10-22 1949-09-20 Bell Telephone Labor Inc Device for heat-treating magnetic materials
US2499860A (en) * 1946-10-03 1950-03-07 Crucible Steel Co America Production of permanent magnets and alloys therefor
US2546047A (en) * 1948-04-13 1951-03-20 Gen Electric Sintered anisotropic alnico magnet
DE761347C (en) * 1942-02-06 1954-07-05 Boehler & Co A G Geb Heat treatment of precipitation hardenable permanent magnet alloys in a magnetic field
US2694167A (en) * 1951-07-10 1954-11-09 Jessop William & Sons Ltd Permanent magnet alloy
US2694166A (en) * 1951-07-10 1954-11-09 Jessop William & Sons Ltd Permanent magnet alloy
US2694790A (en) * 1948-02-17 1954-11-16 Gen Electric Sintered anisotropic permanent magnet
US2988466A (en) * 1957-11-29 1961-06-13 Gen Electric Magnetic material
DE1282206B (en) * 1965-06-18 1968-11-07 Magnetfab Bonn Gmbh Process for the production of anisotropic permanent magnets with increased reversible permeability
CN104668549A (en) * 2013-12-02 2015-06-03 财团法人工业技术研究院 Alloy powder and laser adding material manufacturing process applying same

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2482364A (en) * 1941-10-22 1949-09-20 Bell Telephone Labor Inc Device for heat-treating magnetic materials
DE761347C (en) * 1942-02-06 1954-07-05 Boehler & Co A G Geb Heat treatment of precipitation hardenable permanent magnet alloys in a magnetic field
US2442762A (en) * 1943-09-09 1948-06-08 Bell Telephone Labor Inc Methods of improving the magnetic quality of anisotropic permanent magnets containing iron, nickel, cobalt, and aluminum
US2499860A (en) * 1946-10-03 1950-03-07 Crucible Steel Co America Production of permanent magnets and alloys therefor
US2694790A (en) * 1948-02-17 1954-11-16 Gen Electric Sintered anisotropic permanent magnet
US2546047A (en) * 1948-04-13 1951-03-20 Gen Electric Sintered anisotropic alnico magnet
US2694167A (en) * 1951-07-10 1954-11-09 Jessop William & Sons Ltd Permanent magnet alloy
US2694166A (en) * 1951-07-10 1954-11-09 Jessop William & Sons Ltd Permanent magnet alloy
US2988466A (en) * 1957-11-29 1961-06-13 Gen Electric Magnetic material
DE1282206B (en) * 1965-06-18 1968-11-07 Magnetfab Bonn Gmbh Process for the production of anisotropic permanent magnets with increased reversible permeability
CN104668549A (en) * 2013-12-02 2015-06-03 财团法人工业技术研究院 Alloy powder and laser adding material manufacturing process applying same

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