BE756608A - Procede de preparation d'oxyde de fer, aciculaire, ou goethite,utilisable pour la production d'oxyde de fer gamma-fe203 magnetique - Google Patents

Procede de preparation d'oxyde de fer, aciculaire, ou goethite,utilisable pour la production d'oxyde de fer gamma-fe203 magnetique

Info

Publication number
BE756608A
BE756608A BE756608DA BE756608A BE 756608 A BE756608 A BE 756608A BE 756608D A BE756608D A BE 756608DA BE 756608 A BE756608 A BE 756608A
Authority
BE
Belgium
Prior art keywords
iron oxide
goethite
acicular
usable
production
Prior art date
Application number
Other languages
English (en)
French (fr)
Inventor
Pathes A Kodak
Original Assignee
Eastman Kodak Co
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.)
Publication date
Publication of BE756608A publication Critical patent/BE756608A/xx

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70652—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides gamma - Fe2 O3
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/06—Ferric oxide [Fe2O3]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70647—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides with a skin
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)
BE756608D 1969-09-25 Procede de preparation d'oxyde de fer, aciculaire, ou goethite,utilisable pour la production d'oxyde de fer gamma-fe203 magnetique BE756608A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6932741A FR2060273A1 (en) 1969-09-25 1969-09-25 Acicular iron oxide prodn

Publications (1)

Publication Number Publication Date
BE756608A true BE756608A (fr) 1971-03-24

Family

ID=9040606

Family Applications (1)

Application Number Title Priority Date Filing Date
BE756608D BE756608A (fr) 1969-09-25 Procede de preparation d'oxyde de fer, aciculaire, ou goethite,utilisable pour la production d'oxyde de fer gamma-fe203 magnetique

Country Status (4)

Country Link
JP (1) JPS5017198B1 (xx)
BE (1) BE756608A (xx)
DE (1) DE2047181C3 (xx)
FR (1) FR2060273A1 (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255492A (en) 1969-09-25 1981-03-10 Eastman Kodak Company Magnetic recording crystals, process for producing same, and magnetic recording webs using same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487326A1 (fr) * 1980-07-24 1982-01-29 Kodak Pathe Procede de preparation de particules aciculaires d'oxyde de fer magnetique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558304A (en) * 1948-03-11 1951-06-26 American Cyanamid Co Production of iron oxide pigments
FR1157156A (fr) * 1956-08-03 1958-05-27 Kodak Pathe Nouveau procédé de dispersion d'un fluide à l'état très divisé dans une masse liquide et dispositif pour la mise en oeuvre de ce procédé
DE1242199B (de) * 1960-12-15 1967-06-15 Bayer Ag Verfahren zur Herstellung von nadelfoermigem gamma-Eisen(III)-oxid
FR1357866A (fr) * 1963-03-29 1964-04-10 Basf Ag Procédé pour la production d'oxyde de fer jaune alpha aciculaire, convenant notamment comme matière de départ pour la production d'oxyde de fer-iii-gamma hautement coercitif

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255492A (en) 1969-09-25 1981-03-10 Eastman Kodak Company Magnetic recording crystals, process for producing same, and magnetic recording webs using same

Also Published As

Publication number Publication date
FR2060273A1 (en) 1971-06-18
JPS5017198B1 (xx) 1975-06-19
DE2047181C3 (de) 1980-11-27
DE2047181A1 (de) 1971-04-08
DE2047181B2 (de) 1980-03-27
FR2060273B1 (xx) 1974-02-01

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