KR940022403A - 자기 금속 입자의 제조방법 - Google Patents

자기 금속 입자의 제조방법 Download PDF

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Publication number
KR940022403A
KR940022403A KR1019940004391A KR19940004391A KR940022403A KR 940022403 A KR940022403 A KR 940022403A KR 1019940004391 A KR1019940004391 A KR 1019940004391A KR 19940004391 A KR19940004391 A KR 19940004391A KR 940022403 A KR940022403 A KR 940022403A
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South Korea
Prior art keywords
particles
aluminum
zirconium
compound
iron
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KR1019940004391A
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English (en)
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에이지 노무라
도시히꼬 가와무라
겐지 하따나까
나리아끼 모리야마
Original Assignee
아끼자와 다까시
이시하라 상교 가부시끼가이샤
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Publication of KR940022403A publication Critical patent/KR940022403A/ko

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    • 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
    • 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
    • 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
    • G11B5/712—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 surface treatment or coating of magnetic particles
    • 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
    • H01F1/04—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 metals or alloys
    • H01F1/06—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 metals or alloys in the form of particles, e.g. powder
    • H01F1/061—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 metals or alloys in the form of particles, e.g. powder with a protective layer
    • 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
    • H01F1/04—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 metals or alloys
    • H01F1/06—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 metals or alloys in the form of particles, e.g. powder
    • H01F1/065—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 metals or alloys in the form of particles, e.g. powder obtained by a reduction

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

입자의 표면상에 1종 이상의 알루미늄 및 지르코늄의 수화 산화물 및 무수 산화물과 그의 혼합물로 구성된 첫 번째층과 알루미늄의 수화 산화물 및 무수산화물과 그의 혼합물로 구성된 두번째 층이 코팅되어 있는 침상 철 지지체 입자로 구성되는 침상 자기 철 입자는 지지체로서의 수화산화철 입자의 표면에 1종 이상의 알루미늄 화합물 및 지르코늄 화합물을 코팅한 다음, 코팅된 지지체 입자를 가열하여 적철광 입자로 전환시킨 후에 생성 적철광 지지체 입자의 표면을 1종 이상의 알루미늄 화합물로 코팅한 다음 가열시키면서 코팅 된 적철광 입자를 환원 시킴으로서 제조된다.

Description

자기 금속 입자의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (12)

  1. 수화 산화 철 입자의 표면을 1종 이상의 알루미늄 화합물 및 지르코늄 화합물로 첫번째로 코팅한 다음, 코팅된 입자를 가열하여 적철광 입자로 전환시킨 후에, 생성 적철광 입자를 1종 이상의 알루미늄 화합물로 두번째로 코팅한 다음 가열하에서 코팅된 적철광 입자를 환원시키는 것으로 구성되는 침상 자기 철 입자의 제조방법.
  2. 제1항에 있어서, 첫번째 코팅 처리가 1종 이상의 규소 화합물, 인 화합물 및 붕소 화합물을 추가로 사용하는 것을 포함하는 침상 자기 철 입자의 제조방법.
  3. 제1항에 있어서, 첫번째 코팅 처리가 지르코늄 화합물을 사용하여 실행하고, 두번째 코팅처리는 1종 이상의 규소 화합물, 인 화합물, 지르코늄 화합물 및 붕소 화합물의 사용을 추가로 포함하는 침상 자기 철 입자의 제조방법.
  4. 제2항에 있어서, 첫번째 코팅 처리를 지르코늄 화합물만을 사용하여 실행할때, 두번째 코팅 처리가 1종 이상의 규소 화합물, 인 화합물, 지르코늄 화합물 및 붕소 화합물의 사용을 추가로 포함하는 침상 자기 철 입자의 제조방법.
  5. 제1항에 있어서, 첫번째 코팅 처리시에 침착되는 알루미늄 (Al) 및 지르코늄(Zr)의 양이 수화 산화 철 입자 내의 철(Fe)의 양을 기준으로 하여 0.1 내지 10중량%인 침상 자기 철 입자의 제조방법.
  6. 제1항에 있어서, 두번째 코팅 처리시에 침착되는 알루미늄 (Al)의 양이 적철광 입자내의 철(Fe)의 양을 기준으로 하여 0.1 내지 10중량% 범위인 침상 자기 철 임자의 제조방법.
  7. 제1항에 있어서, 두번째 코팅 처리시에 침착되는 알루미늄 (Al)의 양이 적철광 입자내의 철(Fe)의 양을 기준으로 하여 0.1 내지 8중량% 범위인 침상 자기 철 입자의 제조방법.
  8. 제1항에 있어서, 두번째 코팅 처리시에 침착되는 알루미늄 (Al)의 적철광 입자내의 철(Fe)의 양에 대한 양이 수화 산화 철 상에 침착된 모든 금속원소[수화 입자내의 철(Fe)의 양을 기준으로 함] 및 적철광 입자상에 침착된 모든 금속 원소[적철광 입자내의 철(Fe)의 양을 기준으로 함] 의 전체량을 기준으로 하여 5 내지 95중량% 범위인 침상 자기 철 입자의 제조방법.
  9. 제1항에 있어서, 첫번째 코팅 처리된 수화 산화철 입자를 350 내지 800℃의 온도에서 비환원 대기내에서 가열하는 침상 자기 철 입자의 제조방법.
  10. 제1항에 있어서, 코팅된 적철광 입자를 열적 환원 처리를 실행하기 전에 300 내지 850℃의 온도에서 가열하는 침상 자기 철 입자의 제조방법.
  11. 제1항 내지 제10항중 어느 한 항에 있어서, 알루미늄 화합물이 황산 알루미늄, 염화 알루미늄 및 아세트산 알루미늄과 같은 산성 알루미늄 염; 알루미늄산 나트륨과 같은 염기성 알루미늄염; 알루미늄 알콕시드 및 알킬 알루미늄과 같은 유기 알루미늄 화합물; 및 알루미나졸로 구성되는 군으로 부터 선택되고, 지르코늄 화합물은 탄산산소 지르코늄, 탄산 지르코닐 암모늄, 염화산소 지르코늄, 황산산소 지르코늄, 아세트산 지르코늄, 스테아르산 지르코늄, 지르코늄 테트라-n-부톡시드, 및 지르코늄 아세틸아세테이트로 구성된 군으로부터 선택되고, 규소 화합물은 오르토규산 나트륨, 메타규산 나트륨 및 물유리로 구성된 군으로부터 선택되고 인 화합물은 인산, 폴리인산, 인산 나트륨 및 폴리인산 나트륨이고, 붕소화합물은 붕산 및 붕산 나트륨인 침상 자기 철 입자의 제조방법.
  12. 제1항에 있어서, 수화 산화 철 입자가 코발트, 니켈, 구리, 은, 아연, 망간, 마그네슘, 붕소, 알루미늄 및 규소로 구성된 군으로부터 선택된 1종 이상을 함유하는 자기 철 입자의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940004391A 1993-03-08 1994-03-07 자기 금속 입자의 제조방법 KR940022403A (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP7291793 1993-03-08
JP93-72917 1993-03-08
JP9206993 1993-03-26
JP93-92069 1993-03-26

Publications (1)

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KR940022403A true KR940022403A (ko) 1994-10-20

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US (1) US5451245A (ko)
EP (1) EP0615231B1 (ko)
KR (1) KR940022403A (ko)
CN (1) CN1048110C (ko)
DE (1) DE69406163T2 (ko)

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JPH09194911A (ja) * 1996-01-10 1997-07-29 Kawasaki Teitoku Kk 成形性の良好な永久磁石用原料粉末の製造方法
DE19601412C2 (de) * 1996-01-17 1999-07-22 Emtec Magnetics Gmbh Ferromagnetische Pigmente
US6461562B1 (en) 1999-02-17 2002-10-08 American Scientific Materials Technologies, Lp Methods of making sintered metal oxide articles
JP5010561B2 (ja) * 2008-09-05 2012-08-29 株式会社東芝 水浄化用機磁性粒子およびそれを用いた水処理方法
US9067833B2 (en) 2012-06-21 2015-06-30 Toyota Motor Engineering & Manufacturing North America, Inc. Iron oxide and silica magnetic core
US9093205B2 (en) 2013-05-23 2015-07-28 Toyota Motor Engineering & Manufacturing North America, Inc. Superparamagnetic iron oxide and silica nanoparticles of high magnetic saturation and a magnetic core containing the nanoparticles
US10984933B2 (en) 2013-06-19 2021-04-20 Toyota Motor Engineering & Manufacturing North America, Inc. Superparamagnetic iron cobalt ternary alloy and silica nanoparticles of high magnetic saturation and a magnetic core containing the nanoparticles
US10910153B2 (en) 2013-07-15 2021-02-02 Toyota Motor Engineering & Manufacturing North America, Inc. Superparamagnetic iron cobalt alloy and silica nanoparticles of high magnetic saturation and a magnetic core containing the nanoparticles

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Publication number Publication date
EP0615231A1 (en) 1994-09-14
CN1048110C (zh) 2000-01-05
EP0615231B1 (en) 1997-10-15
US5451245A (en) 1995-09-19
CN1094842A (zh) 1994-11-09
DE69406163T2 (de) 1998-03-05
DE69406163D1 (de) 1997-11-20

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