GB823402A - Improvements in or relating to magnetisable cores made of sintered oxides and methods of manufacturing such cores - Google Patents

Improvements in or relating to magnetisable cores made of sintered oxides and methods of manufacturing such cores

Info

Publication number
GB823402A
GB823402A GB20260/56A GB2026056A GB823402A GB 823402 A GB823402 A GB 823402A GB 20260/56 A GB20260/56 A GB 20260/56A GB 2026056 A GB2026056 A GB 2026056A GB 823402 A GB823402 A GB 823402A
Authority
GB
United Kingdom
Prior art keywords
cores
magnetic field
cooling
relating
manufacturing
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
GB20260/56A
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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 Siemens and Halske AG, Siemens Corp filed Critical Siemens and Halske AG
Publication of GB823402A publication Critical patent/GB823402A/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
    • H01F1/342—Oxides
    • H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Soft Magnetic Materials (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

823,402. Magnetic compositions. SIEMENS & HALSKE A.G. June 29, 1956 [June 30, 1955], No. 20260/56. Addition to 803,625. Drawings to Specification. Class 38 (2). The process of making the cores forming the subject of the parent Specification, includes the step of cooling them in a steady magnetic field. The rate of cooling may be between 10‹ and 50‹ C. per hour and the strength of the field may be such as to produce a magnetising force of 10 Oersteds inside the core. The magnetic field may be present during the cooling after sintering and/or after annealing at the Curie point. The cores exhibit rectangular hysteresis loops in the direction of that magnetic field, and narrow hysteresis loops with low retentivities at right angles to the magnetic field.
GB20260/56A 1955-06-30 1956-06-29 Improvements in or relating to magnetisable cores made of sintered oxides and methods of manufacturing such cores Expired GB823402A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE823402X 1955-06-30

Publications (1)

Publication Number Publication Date
GB823402A true GB823402A (en) 1959-11-11

Family

ID=6746190

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20260/56A Expired GB823402A (en) 1955-06-30 1956-06-29 Improvements in or relating to magnetisable cores made of sintered oxides and methods of manufacturing such cores

Country Status (1)

Country Link
GB (1) GB823402A (en)

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