GB547187A - Improvements in or relating to the manufacture of magnetic materials - Google Patents

Improvements in or relating to the manufacture of magnetic materials

Info

Publication number
GB547187A
GB547187A GB1778/41A GB177841A GB547187A GB 547187 A GB547187 A GB 547187A GB 1778/41 A GB1778/41 A GB 1778/41A GB 177841 A GB177841 A GB 177841A GB 547187 A GB547187 A GB 547187A
Authority
GB
United Kingdom
Prior art keywords
class
oxide
magnetic
iron
feb
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
GB1778/41A
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.)
Johnson Laboratories Inc
Original Assignee
Johnson Laboratories Inc
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 Johnson Laboratories Inc filed Critical Johnson Laboratories Inc
Publication of GB547187A publication Critical patent/GB547187A/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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/34—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 soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/36—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 soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

547,187. Magnetic iron oxide. JOHNSON LABORATORIES, Inc., Feb. 10, 1941, No. 1778. Convention date, Feb. 9, 1940. Drawings to Specification. [Class 1 (iii)] [Also in Group XXXV] A magnetic dust core for high frequency inductances is formed from a synthetically produced magnetic oxide of iron (Fe 3 O 4 ) in the form of minute substantially spherical particles. The oxide is produced in this form by melting iron, for example by passing it in the form of a wire through an electric arc or an oxy-acetylene flame, and blowing the molten metal in the form of a spray through an oxidizing gas such as air. The powder is subsequently mixed with synthetic resin, moulded into cores. Specifications 147,901, [Class 82 (ii)], 269,770 [Class 38 (ii)], 415,456, 473,940 [Group II], and U.S.A., Specification 1,695,041 are referred to.
GB1778/41A 1940-02-09 1941-02-10 Improvements in or relating to the manufacture of magnetic materials Expired GB547187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US547187XA 1940-02-09 1940-02-09

Publications (1)

Publication Number Publication Date
GB547187A true GB547187A (en) 1942-08-18

Family

ID=21993045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1778/41A Expired GB547187A (en) 1940-02-09 1941-02-10 Improvements in or relating to the manufacture of magnetic materials

Country Status (1)

Country Link
GB (1) GB547187A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109141717A (en) * 2018-08-22 2019-01-04 三众机械设备（太仓）有限公司 Broken magnetic Real time auto measure all-in-one machine
CN114371119A (en) * 2021-12-10 2022-04-19 核工业西南物理研究院 Liquid metal multi-sample constant-load stress corrosion test device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109141717A (en) * 2018-08-22 2019-01-04 三众机械设备（太仓）有限公司 Broken magnetic Real time auto measure all-in-one machine
CN114371119A (en) * 2021-12-10 2022-04-19 核工业西南物理研究院 Liquid metal multi-sample constant-load stress corrosion test device and method

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