FR2537771B1 - Procede de preparation de poudre d'oxyde de fer magnetique contenant du cobalt - Google Patents

Procede de preparation de poudre d'oxyde de fer magnetique contenant du cobalt

Info

Publication number
FR2537771B1
FR2537771B1 FR8319697A FR8319697A FR2537771B1 FR 2537771 B1 FR2537771 B1 FR 2537771B1 FR 8319697 A FR8319697 A FR 8319697A FR 8319697 A FR8319697 A FR 8319697A FR 2537771 B1 FR2537771 B1 FR 2537771B1
Authority
FR
France
Prior art keywords
preparation
iron oxide
oxide powder
powder containing
magnetic iron
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
FR8319697A
Other languages
English (en)
Other versions
FR2537771A1 (fr
Inventor
Ichiro Honma
Masaharu Hirai
Masatoshi Amano
Nobusuke Takumi
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.)
Ishihara Sangyo Kaisha Ltd
Original Assignee
Ishihara Sangyo Kaisha Ltd
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 Ishihara Sangyo Kaisha Ltd filed Critical Ishihara Sangyo Kaisha Ltd
Publication of FR2537771A1 publication Critical patent/FR2537771A1/fr
Application granted granted Critical
Publication of FR2537771B1 publication Critical patent/FR2537771B1/fr
Expired 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
    • G11B5/70668—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 containing a dopant
    • G11B5/70673—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 containing a dopant containing Co
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • 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
    • 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]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Magnetic Record Carriers (AREA)
FR8319697A 1982-12-08 1983-12-08 Procede de preparation de poudre d'oxyde de fer magnetique contenant du cobalt Expired FR2537771B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57215172A JPS59107924A (ja) 1982-12-08 1982-12-08 コバルト含有磁性酸化鉄粉末の製造方法

Publications (2)

Publication Number Publication Date
FR2537771A1 FR2537771A1 (fr) 1984-06-15
FR2537771B1 true FR2537771B1 (fr) 1987-07-17

Family

ID=16667846

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8319697A Expired FR2537771B1 (fr) 1982-12-08 1983-12-08 Procede de preparation de poudre d'oxyde de fer magnetique contenant du cobalt

Country Status (6)

Country Link
US (1) US4594267A (fr)
JP (1) JPS59107924A (fr)
KR (1) KR890001971B1 (fr)
DE (1) DE3344299A1 (fr)
FR (1) FR2537771B1 (fr)
GB (1) GB2131783B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6117426A (ja) * 1984-07-04 1986-01-25 Sony Corp コバルト含有酸化鉄磁性粉の製造方法
JPS638223A (ja) * 1986-06-27 1988-01-14 Showa Denko Kk 磁気記録用強磁性粉末の製造方法
DE3631194A1 (de) * 1986-09-13 1988-03-24 Bayer Ag Magnetische eisenoxidpigmente sowie verfahren zu ihrer herstellung
DE3631193A1 (de) * 1986-09-13 1988-03-24 Bayer Ag Magnetische eisenoxidpigmente und verfahren zu ihrer herstellung
JPH0717386B2 (ja) * 1987-01-20 1995-03-01 石原産業株式会社 コバルト含有強磁性酸化鉄粉末及びその製造方法
JP2660714B2 (ja) * 1988-03-15 1997-10-08 石原産業株式会社 コバルト含有強磁性酸化鉄粉末の製造方法
EP0376033B1 (fr) * 1988-12-24 1993-01-20 Bayer Ag Procédé de préparation d'oxydes de fer magnétiques et pigments obtenus
DE3910782C2 (de) * 1988-12-24 2003-08-28 Toda Kogyo Corp Verfahren zur Herstellung von magnetischen Eisenoxiden und so erhaltene Pigmente
JPH02263407A (ja) * 1989-04-04 1990-10-26 Showa Denko Kk 磁気記録用磁性酸化鉄粉の連続製造法と装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2243231C2 (de) * 1972-09-01 1982-01-28 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von Cobalt-dotiertem γ-Eisen(III)oxid
JPS5236751A (en) * 1975-09-17 1977-03-22 Nissin Electric Co Ltd Capacitor
GB1603213A (en) * 1977-04-20 1981-11-18 Hitachi Maxell Cobalt containing iron oxide magnetic particles and method for the preparation of the same
DE2905352A1 (de) * 1979-02-13 1980-08-21 Basf Ag Verfahren zur herstellung von nadelfoermigem kobalthaltigem magnetischem eisenoxid
DE2905351A1 (de) * 1979-02-13 1980-08-21 Basf Ag Verfahren zur herstellung von nadelfoermigem kobalthaltigem, magnetischem eisenoxid
JPS5610472A (en) * 1979-07-04 1981-02-02 Seiko Epson Corp Typewriter
JPS5648444A (en) * 1979-09-28 1981-05-01 Sun Wave Ind Tank gody mounting construction
AU548794B2 (en) * 1981-07-28 1986-01-02 Ishihara Sangyo Kaisha Ltd. Process for producing cobalt containing ferromagnetic iron oxides
JPS5918120A (ja) * 1982-07-16 1984-01-30 Ishihara Sangyo Kaisha Ltd コバルト及び第一鉄含有強磁性酸化鉄の製造方法

Also Published As

Publication number Publication date
GB2131783A (en) 1984-06-27
DE3344299C2 (fr) 1989-03-02
FR2537771A1 (fr) 1984-06-15
US4594267A (en) 1986-06-10
GB2131783B (en) 1986-12-17
KR840007544A (ko) 1984-12-08
GB8332619D0 (en) 1984-01-11
JPS59107924A (ja) 1984-06-22
JPS6323137B2 (fr) 1988-05-14
KR890001971B1 (ko) 1989-06-05
DE3344299A1 (de) 1984-06-14

Similar Documents

Publication Publication Date Title
DE3361977D1 (en) Process for the production of magnetic polymer particles
FR2574688B1 (fr) Procede pour ameliorer les proprietes de manipulation d'une composition de poudre de tantale en flocons
FR2533206B1 (fr) Procede de preparation d'une poudre magnetique a base d'oxyde de fer magnetique et produit obtenu
DE3063008D1 (en) Method for the preparation of acicular magnetic cobalt containing iron oxide
FR2537771B1 (fr) Procede de preparation de poudre d'oxyde de fer magnetique contenant du cobalt
FR2335454A1 (fr) Procede de preparation en continu d'oxyde-hydroxyde de fer feooh
DE3063007D1 (en) Method of preparing acicular magnetic cobalt containing iron oxide
BE885062A (fr) Procede de fabrication d'eponge de fer
FR2510804B1 (fr) Procede de preparation d'un oxyde de fer ferromagnetique contenant du cobalt
FR2493346B1 (fr) Procede de preparation d'un alliage magnetique amorphe
DE3369309D1 (en) Process for the preparation of ferrites from iron (ii) sulfate
DE3172234D1 (en) Process for the preparation of magnetic iron oxides
FR2317229A1 (fr) Elements agglomeres en poudre d'oxyde de zinc et leur procede de preparation
FR2492801B1 (fr) Procede de preparation de poudre d'hydroxyoxyde ferrique gamma
GB2072639B (en) Process for preparing iron or iron compound particles for use in magnetic recording
FR2416868B1 (fr) Procede de preparation d'oxydes de fer ferrimagnetiques aciculaires
DE3379946D1 (en) Process for the preparation of acicular ferromagnetic iron oxides
DE3374480D1 (en) Process for producing acicular ferromagnetic metal particles essentially consisting of iron
FR2519183B1 (fr) Procede de preparation d'une poudre d'oxyde de fer magnetique contenant du cobalt
JPS5641835A (en) Manufacture of needleelike highly magnetic iron particle
FR2562081B1 (fr) Procede de preparation d'oxydes de fer pigmentaires rouges a partir de sulfate ferreux residuaire
DE3160523D1 (en) Process for preparing acicular ferromagnetic particles mainly consisting of iron
FR2515412B1 (fr) Procede de production de poudre d'oxyde de fer magnetique contenant du cobalt
FR2530370B1 (fr) Procede de production d'oxydes de fer ferromagnetiques contenant du cobalt et du fer ferreux, pouvant etre utilises pour la fabrication de bandes magnetiques
FR2336350A1 (fr) Procede de preparation d'oxyde hydrate aciculaire de fer a-(iii)

Legal Events

Date Code Title Description
ST Notification of lapse