KR830005948A - 강자성 금속입자의 제법 - Google Patents

강자성 금속입자의 제법 Download PDF

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Publication number
KR830005948A
KR830005948A KR1019810002759A KR810002759A KR830005948A KR 830005948 A KR830005948 A KR 830005948A KR 1019810002759 A KR1019810002759 A KR 1019810002759A KR 810002759 A KR810002759 A KR 810002759A KR 830005948 A KR830005948 A KR 830005948A
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KR
South Korea
Prior art keywords
particles
oxide
compound
iron oxide
phosphorus
Prior art date
Application number
KR1019810002759A
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English (en)
Other versions
KR860000485B1 (ko
Inventor
에드윈 프렌치 제임스
Original Assignee
에드윈 해롤드 대프터 2세
허큘러스 인코포레이티드
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.)
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Publication date
Application filed by 에드윈 해롤드 대프터 2세, 허큘러스 인코포레이티드 filed Critical 에드윈 해롤드 대프터 2세
Publication of KR830005948A publication Critical patent/KR830005948A/ko
Application granted granted Critical
Publication of KR860000485B1 publication Critical patent/KR860000485B1/ko

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
    • B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/18—Non-metallic particles coated with metal
    • 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

Abstract

내용 없음

Description

강자성 금속입자의 제법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (7)

  1. 철산화물이나 철산화 수화물 입자를 환원단계 이전에 철에 대한 0.1-5원자%인과 적어도 0.1원자%의 코발트, 니켈, 구리를 함유하고 상기 금속대 인의 원자비가 0.5:1-10:1인 피복을 산화물 입자의 표면위에 제공시키기 위한 조건하에서 물에 녹는 인 하유화합물과 코발트, 니켈, 구리로 구성되는 그룹으로 부터 선택되는 금속의 적어도 한 화합물로 처리시킴을 특징으로 하는 철산화물이나 철산화 수화물의 침상형 입자를 개스 환원제로 환전시켜 자기 녹음매체에 적절한 침상형 강자성 금속입자를 제조하는 방법.
  2. 인 화합물이 인산으로 됨을 특징으로 하는 청구범위 제1항의 방법.
  3. 금속 화합물이 물에 녹는염, 산화물이나 수화물로 됨을 특징으로 하는 청구범위 제2항의 방법.
  4. 환원제가 수소임을 특징으로하는 청구범위 제3항의 방법.
  5. 처리 단계에 아연 화합물이 존재함을 특징으로 하는 청구범위 제4항의 방법.
  6. 아연 화합물이 아연 산화물로 됨을 특징으로 하는 청구범위 제5항의 방법.
  7. 처리된 입자를 환원 이전에 500-700℃온도로서 탈수시킴을 특징으로 하는 청구범위 4항이나 6항에 따르는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019810002759A 1980-07-31 1981-07-29 강자성 금속입자의 제조방법 KR860000485B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US174,046 1980-07-31
US06/174,046 US4305753A (en) 1980-07-31 1980-07-31 Process for producing ferromagnetic metallic particles

Publications (2)

Publication Number Publication Date
KR830005948A true KR830005948A (ko) 1983-09-14
KR860000485B1 KR860000485B1 (ko) 1986-04-30

Family

ID=22634570

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019810002759A KR860000485B1 (ko) 1980-07-31 1981-07-29 강자성 금속입자의 제조방법

Country Status (9)

Country Link
US (1) US4305753A (ko)
JP (1) JPS5754206A (ko)
KR (1) KR860000485B1 (ko)
CA (1) CA1176830A (ko)
DE (1) DE3130425A1 (ko)
FR (1) FR2487709B1 (ko)
GB (1) GB2080783B (ko)
IT (1) IT1138480B (ko)
NL (1) NL8103503A (ko)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57113202A (en) * 1981-01-05 1982-07-14 Mitsui Toatsu Chem Inc Manufacture of acicular ultrafine particle of iron oxyhydroxide
US4501774A (en) * 1981-10-12 1985-02-26 Ishihara Sangyo Kaisha, Ltd. Process for the production of cobalt-containing magnetic iron oxide powder
JPS5999706A (ja) * 1982-11-29 1984-06-08 Kanto Denka Kogyo Kk 磁気記録用強磁性金属粉末の製造方法
JPS59154637A (ja) * 1983-02-23 1984-09-03 Hitachi Maxell Ltd 磁気記録用金属磁性粉末とその製造法
EP0123318B1 (en) * 1983-04-25 1988-03-09 Daikin Kogyo Co., Ltd. Acicular particulate material containing iron carbide
US4514216A (en) * 1983-04-30 1985-04-30 Toda Kogyo Corp. Acicular ferromagnetic alloy particles for magnetic recording and process for producing the same
US4464196A (en) * 1983-08-24 1984-08-07 Hercules Incorporated Acicular ferromagnetic metal particles
DE3516884A1 (de) * 1985-05-10 1986-11-13 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung nadelfoermiger, im wesentlichen aus eisen bestehender ferromagnetischer metallteilchen
JP2582764B2 (ja) * 1986-02-05 1997-02-19 バスフ アクチェン ゲゼルシャフト 本質的に鉄から成る針状強磁性金属粉末の製造方法
US5069216A (en) 1986-07-03 1991-12-03 Advanced Magnetics Inc. Silanized biodegradable super paramagnetic metal oxides as contrast agents for imaging the gastrointestinal tract
US5219554A (en) 1986-07-03 1993-06-15 Advanced Magnetics, Inc. Hydrated biodegradable superparamagnetic metal oxides
DE3762468D1 (de) * 1987-02-09 1990-05-31 Basf Ag Verfahren zur herstellung von im wesentlichen aus eisen bestehenden nadelfoermigen ferromagnetischen metallteilchen.
US5221322A (en) * 1988-12-29 1993-06-22 Tdk Corporation Method of making ferromagnetic ultrafine particles
US4975333A (en) * 1989-03-15 1990-12-04 Hoeganaes Corporation Metal coatings on metal powders
US5240742A (en) * 1991-03-25 1993-08-31 Hoeganaes Corporation Method of producing metal coatings on metal powders
CN1035088C (zh) * 1992-07-10 1997-06-04 中国科学院物理研究所 高磁热稳定性钴改性γ－三氧化二铁磁粉及其制备方法
JPH06345437A (ja) * 1993-06-04 1994-12-20 Natl Sci Council γ−酸化鉄磁気粉末の製造方法
DE19601412C2 (de) * 1996-01-17 1999-07-22 Emtec Magnetics Gmbh Ferromagnetische Pigmente

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
GB743792A (en) 1953-03-18 1956-01-25 Gen Electric Co Ltd Improvements in or relating to the production of magnetisable powder suitable for the manufacture of permanent magnets
DE1247026B (de) 1965-01-09 1967-08-10 Basf Ag Verfahren zur Herstellung von fuer die Herstellung von Magnetogrammtraegern geeigneten, magnetisierbaren metallischen Teilchen
NL160106C (nl) * 1968-01-31 1979-09-17 Philips Nv Werkwijze ter bereiding van een in hoofdzaak uit ijzer bestaand magnetisch stabiel poeder, voor magnetische registratie.
NL162233C (nl) * 1968-03-05 1980-04-15 Philips Nv Werkwijze ter bereiding van een in hoofdzaak uit ijzer bestaand magnetisch stabiel poeder, voor magnetische registratie.
JPS4922630B1 (ko) * 1970-06-23 1974-06-10
DE2212933A1 (de) * 1972-03-17 1973-09-20 Philips Nv Verfahren zur herstellung eines im wesentlichen aus eisen bestehenden metallpulvers
DE2212934A1 (de) * 1972-03-17 1973-09-20 Philips Nv Verfahren zur herstellung eines im wesentlichen aus eisen bestehenden metallpulvers
US3837893A (en) * 1972-06-07 1974-09-24 Lurex Nv Non-laminated, non-dyeable metallic yarn
JPS5631882B2 (ko) * 1973-11-16 1981-07-24
JPS5142990A (ko) * 1974-10-11 1976-04-12 Fuji Photo Film Co Ltd
GB1511379A (en) * 1975-07-22 1978-05-17 Fuji Photo Film Co Ltd Process for producing a magnetic material and magnetic recording medium containing the same
DE2646348C2 (de) * 1976-10-14 1986-08-28 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von nadelförmigen, ferromagnetischen, im wesentlichen aus Eisen bestehenden Metallteilchen und deren Verwendung zur Herstellung von magnetischen Aufzeichnungsträgern
JPS54122663A (en) * 1978-03-16 1979-09-22 Kanto Denka Kogyo Kk Production of magnetic powder for magnetic recording based on iron
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JPS5571003A (en) * 1978-11-24 1980-05-28 Hitachi Ltd Manufacture of magnetic powder for magnetic recording medium

Also Published As

Publication number Publication date
DE3130425C2 (ko) 1991-12-12
US4305753A (en) 1981-12-15
JPS5754206A (ko) 1982-03-31
CA1176830A (en) 1984-10-30
GB2080783B (en) 1984-01-18
IT1138480B (it) 1986-09-17
GB2080783A (en) 1982-02-10
FR2487709A1 (fr) 1982-02-05
KR860000485B1 (ko) 1986-04-30
DE3130425A1 (de) 1982-06-16
NL8103503A (nl) 1982-02-16
FR2487709B1 (fr) 1985-10-25
IT8123256A0 (it) 1981-07-30

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