GB758320A - Improvements in or relating to non-metallic magnetic material and its process of manufacture - Google Patents

Improvements in or relating to non-metallic magnetic material and its process of manufacture

Info

Publication number
GB758320A
GB758320A GB34697/54A GB3469754A GB758320A GB 758320 A GB758320 A GB 758320A GB 34697/54 A GB34697/54 A GB 34697/54A GB 3469754 A GB3469754 A GB 3469754A GB 758320 A GB758320 A GB 758320A
Authority
GB
United Kingdom
Prior art keywords
binder
magnetic
mixed
per cent
substance
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
GB34697/54A
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of GB758320A publication Critical patent/GB758320A/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
    • H01F1/10—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • H01F1/113—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles in a bonding agent

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

758,320. Magnetic compositions. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Nov. 30, 1954 [Nov. 30, 1953], No. 34697/54. Class 38 (2). [Also in Group V] A material exhibiting permanent magnetism comprises particles of a substance having the formula MeO, xFe 2 0 3 , where Me is lead, strontium or barium and x lies between 3 and 8 held together by an organic binder. Preferably, x lies between 5 and 7. Between 2 and 30 per cent by weight of the binder may be mixed with 70 to 90 per cent by weight of the magnetic substance, the favoured proportions of binder being between 8 and 15 per cent. To make a suitable material BaCO 3 is mixed with Fe 2 O 3 , the mixture is ground, sintered, reground, sifted, mixed with the binder, inserted in a mould subjected to a magnetic field, compressed and heated to polymerize the binder. The binder may be thermosetting or thermoplastic, e.g. a phenoplast, amino-plast, acrylic resin, polyester or phenolic resin. The substance sold under the Registered Trade Mark " Araldite " may be used. The final moulding may be done in a non-magnetic steel body 1, the mixture being inserted in a cavity 5 between two hardened steel arms 8, 9, forming the poles of a soft magnetic circuit energized by both D.C. and A.C., the field produced by the latter causing the magnetic particles to vibrate and thereby assisting their turning under the influence of the field of the former.
GB34697/54A 1953-11-30 1954-11-30 Improvements in or relating to non-metallic magnetic material and its process of manufacture Expired GB758320A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR758320X 1953-11-30

Publications (1)

Publication Number Publication Date
GB758320A true GB758320A (en) 1956-10-03

Family

ID=9166612

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34697/54A Expired GB758320A (en) 1953-11-30 1954-11-30 Improvements in or relating to non-metallic magnetic material and its process of manufacture

Country Status (1)

Country Link
GB (1) GB758320A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067140A (en) * 1959-06-16 1962-12-04 Raytheon Co Orientation of ferrites
US3114715A (en) * 1961-06-28 1963-12-17 Philips Corp Method of manufacturing an anisotropic ferromagnetic body
US3184807A (en) * 1958-11-24 1965-05-25 Goodrich Co B F Gasket containing a permanent magnet
US3359152A (en) * 1958-07-15 1967-12-19 Leyman Corp Machinable anisotropic magnet
DE1273403B (en) * 1963-04-11 1968-07-18 Kenkichi Tsukamoto Decaying permanent magnet, its use and manufacture
FR2463490A1 (en) * 1979-08-14 1981-02-20 Dumas Jean Claude Magnetic material comprising solidified polymer matrix - incorporating ferromagnetic particles, for electromagnets and artificial organ
GB2128849A (en) * 1982-10-14 1984-05-02 Bestobell Transducer element

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359152A (en) * 1958-07-15 1967-12-19 Leyman Corp Machinable anisotropic magnet
US3184807A (en) * 1958-11-24 1965-05-25 Goodrich Co B F Gasket containing a permanent magnet
US3067140A (en) * 1959-06-16 1962-12-04 Raytheon Co Orientation of ferrites
US3114715A (en) * 1961-06-28 1963-12-17 Philips Corp Method of manufacturing an anisotropic ferromagnetic body
DE1273403B (en) * 1963-04-11 1968-07-18 Kenkichi Tsukamoto Decaying permanent magnet, its use and manufacture
FR2463490A1 (en) * 1979-08-14 1981-02-20 Dumas Jean Claude Magnetic material comprising solidified polymer matrix - incorporating ferromagnetic particles, for electromagnets and artificial organ
GB2128849A (en) * 1982-10-14 1984-05-02 Bestobell Transducer element

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