GB1065970A - Method of producing a ferrite with a substantially rectangular temperature-stable hysteresis loop - Google Patents

Method of producing a ferrite with a substantially rectangular temperature-stable hysteresis loop

Info

Publication number
GB1065970A
GB1065970A GB1126566A GB1126566A GB1065970A GB 1065970 A GB1065970 A GB 1065970A GB 1126566 A GB1126566 A GB 1126566A GB 1126566 A GB1126566 A GB 1126566A GB 1065970 A GB1065970 A GB 1065970A
Authority
GB
United Kingdom
Prior art keywords
mol
per cent
ferrite
cores
march
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
GB1126566A
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs GmbH
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 Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of GB1065970A publication Critical patent/GB1065970A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Magnetic Ceramics (AREA)
  • Soft Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)

Abstract

1,065,970. Magnetic compositions. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. March 15, 1966 [March 24, 1965], No. 11265/66, Heading H1H. A rectangular-loop ferrite with high-temperature stability is made from a starting composition comprising a mixture of the following oxides (or their equivalent oxide-yielding compounds) : 45-60 mol. per cent Fe 2 O 3 28-38 mol. per cent NiO 5-20 mol. per cent ZnO 0À1-10 mol. per cent CdO 0À05-2 mol. per cent CoO 0À01-2 mol. per cent MoO 3 and/or 0À01-1 mol. per cent V 2 O 5 In preparation the mixture is presintered at 900‹C.-1100‹C., ground, granulated with a binding agent such as cellulose, pressed into core shape, and sintered in an oxygen atmosphere at 1350‹ C.-1600‹ C. After sintering the cores are either quenched, or slow cooled at 50‹ C. to 300‹ C. per hour in an atmosphere of decreasing content. For compositions with a hyper-stoichiometric proportion of Fe 2 O 3 , the cores are subjected to a magnetic annealing at 200‹ C.-600‹ C. in a magnetic field of at least 15A/cm.
GB1126566A 1965-03-24 1966-03-15 Method of producing a ferrite with a substantially rectangular temperature-stable hysteresis loop Expired GB1065970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET0028231 1965-03-24

Publications (1)

Publication Number Publication Date
GB1065970A true GB1065970A (en) 1967-04-19

Family

ID=7554012

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1126566A Expired GB1065970A (en) 1965-03-24 1966-03-15 Method of producing a ferrite with a substantially rectangular temperature-stable hysteresis loop

Country Status (3)

Country Link
DE (1) DE1696456B1 (en)
FR (1) FR1475094A (en)
GB (1) GB1065970A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4303073A1 (en) * 1993-02-03 1994-08-04 Siemens Matsushita Components Ferrite with low power loss and high saturation induction

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL69036C (en) * 1946-03-22
GB737284A (en) * 1952-02-15 1955-09-21 Steatite Res Corp Rectangular loop ferro nagnetic materials
DK105170C (en) * 1955-06-30 1966-08-29 Siemens Ag Process for the production of magnetizable ferrite cores.
NL96342C (en) * 1955-10-20
US2989475A (en) * 1955-10-25 1961-06-20 Steatit Magnesia Ag Ferrite of field independent permeability
FR1159399A (en) * 1955-10-25 1958-06-26 Steatit Magnesia Ag Rectangular-shaped hysteresis ring ferrite cores
NL210710A (en) * 1956-09-17
US3027327A (en) * 1957-10-08 1962-03-27 Gen Electric Preparation of ferromagnetic ferrite materials

Also Published As

Publication number Publication date
DE1696456B1 (en) 1970-11-12
FR1475094A (en) 1967-03-31

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