GB752659A - Improvements in and relating to ferrite compositions - Google Patents

Improvements in and relating to ferrite compositions

Info

Publication number
GB752659A
GB752659A GB2309/54A GB230954A GB752659A GB 752659 A GB752659 A GB 752659A GB 2309/54 A GB2309/54 A GB 2309/54A GB 230954 A GB230954 A GB 230954A GB 752659 A GB752659 A GB 752659A
Authority
GB
United Kingdom
Prior art keywords
manganese
mm12o4
nio
compound
chromite
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
GB2309/54A
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.)
ACEC
Umicore NV SA
Original Assignee
ACEC
Ateliers de Constructions Electriques de Charleroi 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 ACEC, Ateliers de Constructions Electriques de Charleroi SA filed Critical ACEC
Publication of GB752659A publication Critical patent/GB752659A/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
    • H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
    • H01F1/0311—Compounds
    • H01F1/0313—Oxidic compounds
    • 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
    • C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
    • C04B35/2625—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing magnesium
    • 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
    • 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
    • C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites

Abstract

In making a magnetic composition a solid solution is formed of a mixed ferrite containing iron ferrite and a compound MM12O4 where M is Mn, Mg or Ni, and M1 is Cr or Co. The compound MM12O4 may be prepared by heating a mixture of the oxides, preferably after compression, to 900-1300 DEG C. in air, nitrogen or oxygen. According to examples, nickel chromite is made by milling equal mol proportions of NiO and Cr2O3 together, compressing and sintering. Manganese chromite is made similarly with MnO2 in place of the NiO. Manganese cobaltite is made moulding and heat treatment of the precipitate obtained by adding caustic potash to a solution of chlorides of manganese and cobalt.
GB2309/54A 1953-11-06 1954-01-26 Improvements in and relating to ferrite compositions Expired GB752659A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE752659X 1953-11-06
BE1109719X 1953-11-06

Publications (1)

Publication Number Publication Date
GB752659A true GB752659A (en) 1956-07-11

Family

ID=75639491

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2309/54A Expired GB752659A (en) 1953-11-06 1954-01-26 Improvements in and relating to ferrite compositions

Country Status (2)

Country Link
FR (1) FR1109719A (en)
GB (1) GB752659A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954346A (en) * 1959-10-28 1960-09-27 Ibm Permanent magnetic materials
US2995517A (en) * 1956-02-16 1961-08-08 Plessey Co Ltd Ferrites containing niobium
US3021283A (en) * 1957-01-08 1962-02-13 Centre Nat Rech Scient Ferromagnetic materials with low coefficient of temperature of the initial magnetic permeability
US3027327A (en) * 1957-10-08 1962-03-27 Gen Electric Preparation of ferromagnetic ferrite materials
US3031405A (en) * 1956-12-14 1962-04-24 Lignes Telegraph Telephon Ferromagnetic materials having a rectangular hysteresis cycle
US3032503A (en) * 1958-06-04 1962-05-01 Licentia Gmbh Composition of magnetic core material and method of producing same
US3034988A (en) * 1958-08-22 1962-05-15 Du Pont Modified chromium oxide ferromagnetic compositions, their preparation and use
US3036009A (en) * 1958-08-11 1962-05-22 Steatit Magnesia Ag Ferromagnetic, ceramic body with high quality at high frequency
US3084123A (en) * 1959-01-27 1963-04-02 Bayer Ag Process for producing ferrites
US3096288A (en) * 1957-12-23 1963-07-02 Union Carbide Corp Ferri-magnetic spinel bodies
US3142645A (en) * 1958-08-11 1964-07-28 Steatit Magnesia Ag Ferromagnetic, ceramic body with a high quality factor at high frequency
US3294687A (en) * 1962-10-12 1966-12-27 Westinghouse Electric Corp Magnetic ceramic material
GB2260539A (en) * 1991-09-11 1993-04-21 American Res Corp Virginia Ferrimagnetic core materials for megahertz frequency high flux density transformers and inductors

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2995517A (en) * 1956-02-16 1961-08-08 Plessey Co Ltd Ferrites containing niobium
US3031405A (en) * 1956-12-14 1962-04-24 Lignes Telegraph Telephon Ferromagnetic materials having a rectangular hysteresis cycle
US3021283A (en) * 1957-01-08 1962-02-13 Centre Nat Rech Scient Ferromagnetic materials with low coefficient of temperature of the initial magnetic permeability
US3027327A (en) * 1957-10-08 1962-03-27 Gen Electric Preparation of ferromagnetic ferrite materials
US3096288A (en) * 1957-12-23 1963-07-02 Union Carbide Corp Ferri-magnetic spinel bodies
US3032503A (en) * 1958-06-04 1962-05-01 Licentia Gmbh Composition of magnetic core material and method of producing same
US3036009A (en) * 1958-08-11 1962-05-22 Steatit Magnesia Ag Ferromagnetic, ceramic body with high quality at high frequency
US3142645A (en) * 1958-08-11 1964-07-28 Steatit Magnesia Ag Ferromagnetic, ceramic body with a high quality factor at high frequency
US3034988A (en) * 1958-08-22 1962-05-15 Du Pont Modified chromium oxide ferromagnetic compositions, their preparation and use
US3084123A (en) * 1959-01-27 1963-04-02 Bayer Ag Process for producing ferrites
US2954346A (en) * 1959-10-28 1960-09-27 Ibm Permanent magnetic materials
US3294687A (en) * 1962-10-12 1966-12-27 Westinghouse Electric Corp Magnetic ceramic material
GB2260539A (en) * 1991-09-11 1993-04-21 American Res Corp Virginia Ferrimagnetic core materials for megahertz frequency high flux density transformers and inductors
US5626789A (en) * 1991-09-11 1997-05-06 American Research Corp. Of Virginia Ferrimagnetic core materials for megahertz frequency high flux density transformers and inductors
US6433299B1 (en) 1991-09-11 2002-08-13 American Research Corporation Of Virginia Monolithic magnetic modules for integrated planar magnetic circuitry and process for manufacturing same

Also Published As

Publication number Publication date
FR1109719A (en) 1956-02-01

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