DE69406163D1 - Verfahren zur Herstellung von magnetischen metallischen Teilchen - Google Patents

Verfahren zur Herstellung von magnetischen metallischen Teilchen

Info

Publication number
DE69406163D1
DE69406163D1 DE69406163T DE69406163T DE69406163D1 DE 69406163 D1 DE69406163 D1 DE 69406163D1 DE 69406163 T DE69406163 T DE 69406163T DE 69406163 T DE69406163 T DE 69406163T DE 69406163 D1 DE69406163 D1 DE 69406163D1
Authority
DE
Germany
Prior art keywords
production
metallic particles
magnetic metallic
magnetic
particles
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 - Fee Related
Application number
DE69406163T
Other languages
English (en)
Other versions
DE69406163T2 (de
Inventor
Eiji Nomura
Toshihiko Kawamura
Kenji Hatanaka
Nariaki Moriyama
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
Application granted granted Critical
Publication of DE69406163D1 publication Critical patent/DE69406163D1/de
Publication of DE69406163T2 publication Critical patent/DE69406163T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
DE69406163T 1993-03-08 1994-02-24 Verfahren zur Herstellung von magnetischen metallischen Teilchen Expired - Fee Related DE69406163T2 (de)

Applications Claiming Priority (2)

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

Publications (2)

Publication Number Publication Date
DE69406163D1 true DE69406163D1 (de) 1997-11-20
DE69406163T2 DE69406163T2 (de) 1998-03-05

Family

ID=26414051

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69406163T Expired - Fee Related DE69406163T2 (de) 1993-03-08 1994-02-24 Verfahren zur Herstellung von magnetischen metallischen Teilchen

Country Status (5)

Country Link
US (1) US5451245A (de)
EP (1) EP0615231B1 (de)
KR (1) KR940022403A (de)
CN (1) CN1048110C (de)
DE (1) DE69406163T2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5814164A (en) 1994-11-09 1998-09-29 American Scientific Materials Technologies L.P. Thin-walled, monolithic iron oxide structures made from steels, and methods for manufacturing such structures
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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919168B2 (ja) * 1980-06-11 1984-05-02 日立マクセル株式会社 金属磁性粉末の製造方法
EP0041727B1 (de) * 1980-06-11 1987-09-09 Hitachi Maxell Ltd. Verfahren zur Herstellung von im wesentlichen aus metallischem Eisen bestehenden ferromagnetischen Teilchen
JPS5893806A (ja) * 1981-11-28 1983-06-03 Toda Kogyo Corp 針状晶合金磁性粒子粉末の製造法
JPS62156209A (ja) * 1985-12-27 1987-07-11 Mitsui Toatsu Chem Inc 強磁性金属粉末
DE3762468D1 (de) * 1987-02-09 1990-05-31 Basf Ag Verfahren zur herstellung von im wesentlichen aus eisen bestehenden nadelfoermigen ferromagnetischen metallteilchen.
JPS6457701A (en) * 1987-08-28 1989-03-06 Ishihara Mining & Chemical Co Manufacture of metallic magnetic powder for magnetic recording
JPH01298106A (ja) * 1988-05-27 1989-12-01 Tosoh Corp 強磁性鉄紛の製造法
JPH02298004A (ja) * 1989-05-12 1990-12-10 Kao Corp メタル磁性粉末の製造方法
WO1991001548A1 (en) * 1989-07-21 1991-02-07 Tdk Corporation Magnetic recording medium
JP2918619B2 (ja) * 1990-04-06 1999-07-12 花王株式会社 金属磁性粉末の製造方法及び磁気記録媒体用塗膜

Also Published As

Publication number Publication date
US5451245A (en) 1995-09-19
CN1094842A (zh) 1994-11-09
EP0615231B1 (de) 1997-10-15
EP0615231A1 (de) 1994-09-14
DE69406163T2 (de) 1998-03-05
KR940022403A (ko) 1994-10-20
CN1048110C (zh) 2000-01-05

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee