KR920002471A - 탄화철 미립자의 제조방법 - Google Patents

탄화철 미립자의 제조방법 Download PDF

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Publication number
KR920002471A
KR920002471A KR1019910011177A KR910011177A KR920002471A KR 920002471 A KR920002471 A KR 920002471A KR 1019910011177 A KR1019910011177 A KR 1019910011177A KR 910011177 A KR910011177 A KR 910011177A KR 920002471 A KR920002471 A KR 920002471A
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KR
South Korea
Prior art keywords
iron
compound
fine particles
carbide fine
iron carbide
Prior art date
Application number
KR1019910011177A
Other languages
English (en)
Other versions
KR940009271B1 (ko
Inventor
요시유끼 시부야
나오끼 미야모도
시게오 다이몬
Original Assignee
야마다 미노루
다이낀 고오교오 가부시끼가이샤
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 야마다 미노루, 다이낀 고오교오 가부시끼가이샤 filed Critical 야마다 미노루
Publication of KR920002471A publication Critical patent/KR920002471A/ko
Application granted granted Critical
Publication of KR940009271B1 publication Critical patent/KR940009271B1/ko

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Classifications

    • 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
    • G11B5/70605—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 metals or alloys
    • G11B5/70615—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 metals or alloys containing Fe metal or alloys
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C01B32/914—Carbides of single elements
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
    • 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
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Catalysts (AREA)

Abstract

내용 없음

Description

탄화철 미립자의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (5)

  1. (a) 옥시수산화철 미립자와 산화철 미립자로 구성되는 군으로부터 선택된 철 화합물을 탄소원자를 함유하지 않은 환원제의 임의적으로 접촉시키되, 이 접속에 앞서 철화합물을 철화합물 또는 철화합물과 코발트 화합물로 피복시키고 알루미늄화합물 또는 규소화합물로 피복시키는 단계, 그리고 (b) 상기 (a)의 철화합물을 탄소원자를 함유하는 환원 및 탄소처리제 또는 그것의 탄소원자 비함유 환원제와의 혼합물과 접촉시키는 단계로 이루어지는 것을 특징으로 하는 0.1 내지 2㎛의 평균입자(장축) 및 3내지 20의 평균축비를 갖는 탄화철 미립자의 제조방법.
  2. 제1항에 있어서, 단계(a)에서 피복된 철화합물은 약 200내지 700℃에서 가열되는 것을 특징으로 하는 제조방법.
  3. 제1항에 있어서, 단계(a)에서 접촉온도는 약 200 내지 700℃이며 단계(b)에서 접촉온도는 약 250 내지 400℃인 것을 특징으로 하는 제조방법.
  4. 제1항에 있어서, 단계(a)에서 각 화합물의 피복량은 옥시수산화철 또는 Fe2O3로서의 산화철의 중량을 기준으로 금속원소로서 0.01 내지 10중량%인 것을 특징으로 하는 제조방법.
  5. 제1항의 제조방법에 의해 제조된 탄화철 미립자.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임
KR1019910011177A 1990-07-02 1991-07-02 탄화철 미립자의 제조방법 KR940009271B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2175819A JPH085651B2 (ja) 1990-07-02 1990-07-02 炭化鉄微粒子の製造方法
JP175819 1990-07-02
JP2-175819 1990-07-02

Publications (2)

Publication Number Publication Date
KR920002471A true KR920002471A (ko) 1992-02-28
KR940009271B1 KR940009271B1 (ko) 1994-10-06

Family

ID=16002783

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910011177A KR940009271B1 (ko) 1990-07-02 1991-07-02 탄화철 미립자의 제조방법

Country Status (7)

Country Link
US (1) US5205950A (ko)
EP (1) EP0464745B1 (ko)
JP (1) JPH085651B2 (ko)
KR (1) KR940009271B1 (ko)
CA (1) CA2046047A1 (ko)
DE (1) DE69114190T2 (ko)
TW (1) TW198707B (ko)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2106685A1 (en) * 1992-01-22 1993-07-23 Ikuo Kitamura Minute acicular particle containing metallic iron, iron carbide and carbon, production thereof, and magnetic coating composition and magnetic recording medium containing the same
US5869018A (en) * 1994-01-14 1999-02-09 Iron Carbide Holdings, Ltd. Two step process for the production of iron carbide from iron oxide
JPH07320919A (ja) * 1994-05-24 1995-12-08 Daikin Ind Ltd 被着した微粒子及びその製法並びに用途
AU750751B2 (en) 1998-03-31 2002-07-25 Iron Carbide Holdings, Ltd Process for the production of iron carbide from iron oxide using external sources of carbon monoxide
US9773594B2 (en) * 2012-01-04 2017-09-26 Virginia Commonwealth University Non-rare earth magnetic nanoparticles

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61106409A (ja) * 1984-10-25 1986-05-24 Daikin Ind Ltd 炭化鉄を含有する針状粒子の製法
EP0123318B1 (en) * 1983-04-25 1988-03-09 Daikin Kogyo Co., Ltd. Acicular particulate material containing iron carbide
JPS61106408A (ja) * 1984-10-25 1986-05-24 Daikin Ind Ltd 炭化鉄を含有する針状粒子の製造法
US4900464A (en) * 1985-12-24 1990-02-13 Daikin Industries Ltd. Particles containing iron carbide
JPS6395104A (ja) * 1986-10-06 1988-04-26 Daikin Ind Ltd Ｆｅ↓７Ｃ↓３を主成分とする炭化鉄を含有する粒子、その製法及び用途
JPH0729763B2 (ja) * 1987-10-13 1995-04-05 ダイキン工業株式会社 炭化鉄微粒子及びその製造法
JPH0729765B2 (ja) * 1988-01-27 1995-04-05 ダイキン工業株式会社 炭化鉄微粒子及びその製造方法
JPH0230626A (ja) * 1988-04-28 1990-02-01 Daikin Ind Ltd 炭化鉄微粒子及びその製造法

Also Published As

Publication number Publication date
KR940009271B1 (ko) 1994-10-06
EP0464745A3 (en) 1992-01-15
DE69114190D1 (de) 1995-12-07
EP0464745A2 (en) 1992-01-08
DE69114190T2 (de) 1996-06-05
TW198707B (ko) 1993-01-21
JPH0465309A (ja) 1992-03-02
CA2046047A1 (en) 1992-01-03
EP0464745B1 (en) 1995-11-02
JPH085651B2 (ja) 1996-01-24
US5205950A (en) 1993-04-27

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