FR2297813A1 - Procede pour preparer un oxyde ferrique - Google Patents

Procede pour preparer un oxyde ferrique

Info

Publication number
FR2297813A1
FR2297813A1 FR7600553A FR7600553A FR2297813A1 FR 2297813 A1 FR2297813 A1 FR 2297813A1 FR 7600553 A FR7600553 A FR 7600553A FR 7600553 A FR7600553 A FR 7600553A FR 2297813 A1 FR2297813 A1 FR 2297813A1
Authority
FR
France
Prior art keywords
preparing
ferric oxide
ferric
oxide
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.)
Granted
Application number
FR7600553A
Other languages
English (en)
French (fr)
Other versions
FR2297813B1 (enrdf_load_stackoverflow
Inventor
Giuliano Fagherazzi
Francesco Ferrero
Giuseppe Sironi
Bruno Viviani
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.)
Montedison SpA
Original Assignee
Montedison SpA
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 Montedison SpA filed Critical Montedison SpA
Publication of FR2297813A1 publication Critical patent/FR2297813A1/fr
Application granted granted Critical
Publication of FR2297813B1 publication Critical patent/FR2297813B1/fr
Granted legal-status Critical Current

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
    • G11B5/70663—Preparation processes specially adapted therefor, e.g. using stabilising agents
    • 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
    • G11B5/70652—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
    • G11B5/70657—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 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
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
    • C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other
    • C01P2004/86—Thin layer coatings, i.e. the coating thickness being less than 0.1 time the particle radius
    • 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)
  • Hard Magnetic Materials (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Compounds Of Iron (AREA)
FR7600553A 1975-01-14 1976-01-12 Procede pour preparer un oxyde ferrique Granted FR2297813A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1923875A IT1028343B (it) 1975-01-14 1975-01-14 Procedimento per la preparazione di ossido ferrico aciculare ferri magnetico

Publications (2)

Publication Number Publication Date
FR2297813A1 true FR2297813A1 (fr) 1976-08-13
FR2297813B1 FR2297813B1 (enrdf_load_stackoverflow) 1981-05-22

Family

ID=11156013

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7600553A Granted FR2297813A1 (fr) 1975-01-14 1976-01-12 Procede pour preparer un oxyde ferrique

Country Status (5)

Country Link
DE (1) DE2559248A1 (enrdf_load_stackoverflow)
FR (1) FR2297813A1 (enrdf_load_stackoverflow)
GB (1) GB1531051A (enrdf_load_stackoverflow)
IT (1) IT1028343B (enrdf_load_stackoverflow)
NL (1) NL7600190A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001435A1 (de) * 1977-10-06 1979-04-18 BASF Aktiengesellschaft Verfahren zur Herstellung von agglomeratfreiem Gamma-Eisen(III)oxid
FR2416869A1 (fr) * 1978-02-10 1979-09-07 Basf Ag Procede de preparation d'oxydes de fer ferrimagnetiques aciculaires
EP0186042A3 (en) * 1984-12-17 1987-06-10 Michael Johann Dipl.Ing. Dr.Mont. Ruthner Process and device for producing ceramic powders based on one or more metal oxide components and mixtures thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2633597C2 (de) * 1976-07-27 1983-01-13 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von nadel- bis prismenförmigen ferrimagnetischen Eisenoxidpigmenten zur magnetischen Signalaufzeichnung
JPS5677931A (en) * 1979-11-28 1981-06-26 Tdk Corp Magnetic recording medium and its producton
JPS5676510A (en) * 1979-11-28 1981-06-24 Tdk Corp Manufacture of magnetic recording material
CA1304572C (en) * 1988-01-18 1992-07-07 Leonard George Wiseman System for coating particles employing a pneumatic transport reactor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001435A1 (de) * 1977-10-06 1979-04-18 BASF Aktiengesellschaft Verfahren zur Herstellung von agglomeratfreiem Gamma-Eisen(III)oxid
FR2416869A1 (fr) * 1978-02-10 1979-09-07 Basf Ag Procede de preparation d'oxydes de fer ferrimagnetiques aciculaires
EP0186042A3 (en) * 1984-12-17 1987-06-10 Michael Johann Dipl.Ing. Dr.Mont. Ruthner Process and device for producing ceramic powders based on one or more metal oxide components and mixtures thereof

Also Published As

Publication number Publication date
FR2297813B1 (enrdf_load_stackoverflow) 1981-05-22
GB1531051A (en) 1978-11-01
NL7600190A (nl) 1976-07-16
IT1028343B (it) 1979-01-30
DE2559248A1 (de) 1976-07-15

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Legal Events

Date Code Title Description
ST Notification of lapse