KR840001865A - 코발트-함유 자기산화철 분말의 제조방법 - Google Patents

코발트-함유 자기산화철 분말의 제조방법 Download PDF

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Publication number
KR840001865A
KR840001865A KR1019820004593A KR820004593A KR840001865A KR 840001865 A KR840001865 A KR 840001865A KR 1019820004593 A KR1019820004593 A KR 1019820004593A KR 820004593 A KR820004593 A KR 820004593A KR 840001865 A KR840001865 A KR 840001865A
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KR
South Korea
Prior art keywords
medium
aqueous
process according
iron oxide
oxide powder
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KR1019820004593A
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English (en)
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KR890000702B1 (ko
Inventor
고끼찌 미야자와 (외 6)
Original Assignee
이시한라 겐조
이시하라상교 가부시끼 가이샤
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Priority claimed from JP56162554A external-priority patent/JPS5864222A/ja
Priority claimed from JP57146472A external-priority patent/JPS5935404A/ja
Application filed by 이시한라 겐조, 이시하라상교 가부시끼 가이샤 filed Critical 이시한라 겐조
Publication of KR840001865A publication Critical patent/KR840001865A/ko
Application granted granted Critical
Publication of KR890000702B1 publication Critical patent/KR890000702B1/ko

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • 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
    • G11B5/70678—Ferrites
    • G11B5/70684—Ferro-ferrioxydes
    • 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
    • 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
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

내용 없음

Description

코발트-함유 자기산화철 분말의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (12)

  1. 인광물질-함유 자기산화철 분말을 수성알카릴 매질 또는 수성 산매질로 대기압하 처리한 다음, 코발트 화합물을 피복하고나 또는 코발트 화합물과 기타 금속 화합물을 상기 분말의 입자표면에 피복 시킴을 특징으로 하는 코발트-함유 자기산화철 분말의 제조방법.
  2. 제1항에 있어서, 수성 매질에 의한 처리가 10∼95℃의 온도에서 행해짐을 특징으로 하는 방법.
  3. 제1항에 있어서, 수성 매질에 의한 처리가 20∼80℃의 온도에서 처리됨을 특징으로 하는 방법.
  4. 제1항에 있어서, 수성 매질에 의한 처리가 25℃에서 수행됨을 특징으로 하는 방법.
  5. 제1항에 있어서, 수성 매질에 의한 처리가 30∼70℃의 온도에서 수행됨을 특징으로하는 방법.
  6. 제1 또는 2항에 있어서, 수성 알칼리 매질의 알칼리 농도가 0.005∼3몰/ℓ임을 특징으로 하는 방법.
  7. 제1 또는 2항에 있어서, 수성 산매질의 산농도가 0.01∼1몰/ℓ임을 특징으로 하는 방법.
  8. 제1 또는 2항에 있어서, 자기 산화철 분말을 함유하는 인광물질을 우선 수성산 매질로 처리한 다음 수성알칼리 매질로 처리함을 특징으로하는 방법.
  9. 제1 또는 2항에 있어서, 자기 산화철 분말을 함유하는 인광물질을 우선 수성알칼리 매질로 처리한 다음 수성 산 매질로 처리함을 특징으로하는 방법.
  10. 제1 또는 2항에 있어서, 자기 산화철 분말의 입자표면이 코발트 화합물 및 제일철 화합물로 피복됨을 특징으로하는 방법.
  11. 제1 또는 2항에 있어서, 수증기 존재한 더 가열함을 특징으로하는 방법.
  12. 제1 또는 2항에 있어서, 열수처리를 더 행함을 특징으로하는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR8204593A 1981-10-12 1982-10-12 코발트-함유 자성 산화철 분말의 제조방법 KR890000702B1 (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP162554 1981-10-12
JP56162554A JPS5864222A (ja) 1981-10-12 1981-10-12 コバルト含有磁性酸化鉄粉末の製造方法
JP146472 1982-08-24
JP57146472A JPS5935404A (ja) 1982-08-24 1982-08-24 コバルト被着磁性酸化鉄粉末の製造方法

Publications (2)

Publication Number Publication Date
KR840001865A true KR840001865A (ko) 1984-06-07
KR890000702B1 KR890000702B1 (ko) 1989-03-27

Family

ID=26477303

Family Applications (1)

Application Number Title Priority Date Filing Date
KR8204593A KR890000702B1 (ko) 1981-10-12 1982-10-12 코발트-함유 자성 산화철 분말의 제조방법

Country Status (5)

Country Link
US (1) US4501774A (ko)
KR (1) KR890000702B1 (ko)
DE (1) DE3237618A1 (ko)
FR (1) FR2515412B1 (ko)
GB (1) GB2109780B (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5979431A (ja) * 1982-10-29 1984-05-08 Konishiroku Photo Ind Co Ltd 磁気記録媒体
US5230818A (en) 1991-12-20 1993-07-27 Eastman Kodak Company Coating compositions for master media for anhysteretic recording
EP3207991B1 (en) * 2016-02-17 2020-08-19 Korea Institute of Energy Research Direct synthesis method of a catalyst structure having nanostructured catalyst particles dispersed in a support
US10384201B2 (en) 2016-02-17 2019-08-20 Korea Institute Of Energy Research Direct synthesis method of nanostructured catalyst particles on various supports and catalyst structure produced by the same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770500A (en) * 1969-09-16 1973-11-06 Tdk Electronics Co Ltd Magnetic materials and method of making same
DE2243231C2 (de) * 1972-09-01 1982-01-28 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von Cobalt-dotiertem γ-Eisen(III)oxid
JPS5719049B2 (ko) * 1974-06-13 1982-04-20
JPS52135895A (en) * 1976-05-09 1977-11-14 Toda Kogyo Corp Process for preparing cobaltt modified acicular crystal magnetic ironoxide particle
JPS52135897A (en) * 1976-05-09 1977-11-14 Toda Kogyo Corp Process for preparing cobaltt modified acicular crystal magnetic ironoxide particle
JPS52135896A (en) * 1976-05-09 1977-11-14 Toda Kogyo Corp Process for preparing cobaltt modified acicular crystal magnetic ironoxide particle
US4137342A (en) * 1976-10-29 1979-01-30 Minnesota Mining And Manufacturing Company Cobalt-doped acicular hyper-magnetite particles
DE2905352A1 (de) * 1979-02-13 1980-08-21 Basf Ag Verfahren zur herstellung von nadelfoermigem kobalthaltigem magnetischem eisenoxid
JPS55149137A (en) * 1979-05-11 1980-11-20 Tdk Corp High performance high coercive force powder and its manufacture
US4305753A (en) * 1980-07-31 1981-12-15 Hercules Incorporated Process for producing ferromagnetic metallic particles

Also Published As

Publication number Publication date
FR2515412B1 (fr) 1986-01-03
KR890000702B1 (ko) 1989-03-27
GB2109780A (en) 1983-06-08
DE3237618A1 (de) 1983-04-28
US4501774A (en) 1985-02-26
GB2109780B (en) 1985-08-21
FR2515412A1 (fr) 1983-04-29
DE3237618C2 (ko) 1989-03-02

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