ES238887A1 - Método de fabricacion de cuerpos oxidicos ferromagnéticos - Google Patents

Método de fabricacion de cuerpos oxidicos ferromagnéticos

Info

Publication number
ES238887A1
ES238887A1 ES0238887A ES238887A ES238887A1 ES 238887 A1 ES238887 A1 ES 238887A1 ES 0238887 A ES0238887 A ES 0238887A ES 238887 A ES238887 A ES 238887A ES 238887 A1 ES238887 A1 ES 238887A1
Authority
ES
Spain
Prior art keywords
product
approximately
treatment
covered
bodies
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
ES0238887A
Other languages
English (en)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES238887A1 publication Critical patent/ES238887A1/es
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
    • 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

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)
  • Hard Magnetic Materials (AREA)

Abstract

Método de fabricación de cuerpos oxídicos ferromagnéticos, en que mediante un tratamiento de una mezcla inicial finamente dividida de óxido férrico y óxidos de metales bivalentes, o de compuestos que se convierten en óxidos durante calentamiento, se obtiene un producto en la forma deseada para los cuerpos ferromagnéticos, caracterizado por el hecho de que, después de este tratamiento, el producto es cubierto con una capa de un óxido de un metal bivalente y este producto cubierto es calentado a una temperatura de aproximadamente 1100º a 1500º C, preferentemente entre aproximadamente 1300º C y 1500º C.
ES0238887A 1956-12-03 1957-11-30 Método de fabricacion de cuerpos oxidicos ferromagnéticos Expired ES238887A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US625872A US3002930A (en) 1956-12-03 1956-12-03 Process of making a ferromagnetic body

Publications (1)

Publication Number Publication Date
ES238887A1 true ES238887A1 (es) 1958-05-01

Family

ID=24507967

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0238887A Expired ES238887A1 (es) 1956-12-03 1957-11-30 Método de fabricacion de cuerpos oxidicos ferromagnéticos

Country Status (6)

Country Link
US (1) US3002930A (es)
CH (1) CH410216A (es)
DE (1) DE1227820B (es)
ES (1) ES238887A1 (es)
FR (1) FR1194466A (es)
GB (1) GB833277A (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1300052B (de) * 1963-01-25 1969-07-24 Westinghouse Electric Corp Verfahren zur Herstellung eines Ferrit-Dauermagneten hoher Koerzitivkraft
US3343929A (en) * 1964-06-22 1967-09-26 Ray J Van Thyne Oxidation-resistant beryllium articles and process of making
US3359096A (en) * 1966-05-11 1967-12-19 Texas Instruments Inc Manufacture of coated wire
DE1771398B2 (de) * 1968-05-17 1972-11-23 Siemens AG, 1000 Berlin u. 8000 München Mangan-zink-ferrit mit im wesentlichen linearer temperaturabhaengigkeit der permeabilitaet
DE2148554A1 (de) * 1970-10-07 1972-04-13 Philips Nv Verfahren zur Herstellung eines polykristallinen Ferritkoerpers
US5089159A (en) * 1972-09-29 1992-02-18 Tchernev Dimiter I Magnetic substance having sharp permeability transition temperature, process for making, and apparatus
US4490268A (en) * 1978-02-27 1984-12-25 Tchernev Dimiter I Process of preparing magnetic spinel ferrite having accurate predetermined transition temperature
JPS59172202A (ja) * 1983-03-22 1984-09-28 秩父セメント株式会社 電圧非直線性抵抗体の製造方法
DE29502296U1 (de) * 1995-02-13 1995-04-06 Siemens AG, 80333 München Spule mit ellipsenförmigem Eisenkern
CN111740556A (zh) * 2020-07-29 2020-10-02 海安县巨力磁材有限责任公司 一种径向取向永磁铁氧体磁转子的制造方法

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1976230A (en) * 1930-12-25 1934-10-09 Mitsubishi Electric Corp Permanent magnet and method of manufacturing same
US2100537A (en) * 1935-08-26 1937-11-30 Martin J Conway Ferrous metal
US2323169A (en) * 1940-02-08 1943-06-29 Rca Corp Process of plating metal bodies
CH247856A (de) * 1943-05-15 1947-03-31 Philips Nv Magnetischer Kern und Verfahren zu dessen Herstellung.
BE456575A (es) * 1943-07-01
US2579978A (en) * 1946-03-27 1951-12-25 Hartford Nat Bank & Trust Co Soft ferromagnetic material and method of making same
US2565861A (en) * 1947-09-26 1951-08-28 Rca Corp Magnetic materials
US2568881A (en) * 1948-12-28 1951-09-25 Steatite Res Corp Ceramic parts for electrical devices having magnetic properties and method of making
US2656319A (en) * 1949-01-03 1953-10-20 Aladdin Ind Inc Magnetic core composition and method of producing the same
US2700023A (en) * 1951-03-10 1955-01-18 Steatite Res Corp Process of making molded ceramic ferromagnetic products
DE868421C (de) * 1951-04-04 1953-02-26 Licentia Gmbh Magnetisch hochwertiger Sinterkoerper und Verfahren zu seiner Herstellung
CA525699A (en) * 1952-02-07 1956-05-29 Albers-Schoenberg Ernst Ferromagnetic ceramic materials with hysteresis loops of rectangular shape
GB737284A (en) * 1952-02-15 1955-09-21 Steatite Res Corp Rectangular loop ferro nagnetic materials
US2723238A (en) * 1952-08-19 1955-11-08 Rca Corp Manganese zinc ferrospinel compositions, including copper oxide
US2723239A (en) * 1952-09-29 1955-11-08 Rca Corp Ferrospinel compositions
US2773039A (en) * 1952-11-24 1956-12-04 Steatite Res Corp Magnetically strong ferromagnetic magnesium-zinc type of ferrite
GB760799A (en) * 1953-02-16 1956-11-07 George Victor Planer Improvements in or relating to magnetic ceramic materials
US2860105A (en) * 1953-12-21 1958-11-11 Philips Corp Method of manufacturing ferromagnetic cores
FR1100865A (fr) * 1954-03-05 1955-09-26 Matériaux magnétiques à base d'oxydes pour la réalisation de bandes d'enregistrement magnétique
US2904875A (en) * 1954-08-26 1959-09-22 Westinghouse Electric Corp Method of coating magnetic sheet material
US2886530A (en) * 1955-07-19 1959-05-12 Greger Herbert Hans Process of manufacturing ceramic ferrites

Also Published As

Publication number Publication date
US3002930A (en) 1961-10-03
GB833277A (en) 1960-04-21
DE1227820B (de) 1966-10-27
FR1194466A (fr) 1959-11-10
CH410216A (de) 1966-03-31

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