JPS5029157B1 - - Google Patents

Info

Publication number
JPS5029157B1
JPS5029157B1 JP46035860A JP3586071A JPS5029157B1 JP S5029157 B1 JPS5029157 B1 JP S5029157B1 JP 46035860 A JP46035860 A JP 46035860A JP 3586071 A JP3586071 A JP 3586071A JP S5029157 B1 JPS5029157 B1 JP S5029157B1
Authority
JP
Japan
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.)
Pending
Application number
JP46035860A
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 filed Critical
Priority to JP46035860A priority Critical patent/JPS5029157B1/ja
Priority to DE2225796A priority patent/DE2225796C3/de
Priority to US05/257,716 priority patent/US3958068A/en
Publication of JPS5029157B1 publication Critical patent/JPS5029157B1/ja
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/48—Coating with alloys
    • C23C18/50—Coating with alloys with alloys based on iron, cobalt or nickel
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31—Coating with metals
    • C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
    • C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
    • 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
    • G11B5/70647—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 with a skin
    • 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
    • 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
JP46035860A 1971-05-27 1971-05-27 Pending JPS5029157B1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP46035860A JPS5029157B1 (ja) 1971-05-27 1971-05-27
DE2225796A DE2225796C3 (de) 1971-05-27 1972-05-26 Verfahren zur Herstellung von magnetischem Material in Pulverform
US05/257,716 US3958068A (en) 1971-05-27 1972-05-30 Process for the production of powdered magnetic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46035860A JPS5029157B1 (ja) 1971-05-27 1971-05-27

Publications (1)

Publication Number Publication Date
JPS5029157B1 true JPS5029157B1 (ja) 1975-09-20

Family

ID=12453722

Family Applications (1)

Application Number Title Priority Date Filing Date
JP46035860A Pending JPS5029157B1 (ja) 1971-05-27 1971-05-27

Country Status (3)

Country Link
US (1) US3958068A (ja)
JP (1) JPS5029157B1 (ja)
DE (1) DE2225796C3 (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137342A (en) * 1976-10-29 1979-01-30 Minnesota Mining And Manufacturing Company Cobalt-doped acicular hyper-magnetite particles
JPS5939814B2 (ja) * 1978-03-16 1984-09-26 ティーディーケイ株式会社 磁気記録媒体の製造方法
US4226909A (en) * 1978-08-21 1980-10-07 Minnesota Mining And Manufacturing Company Cobalt-doped acicular hyper-magnetite particles
US4657816A (en) * 1982-04-19 1987-04-14 Memorex Corporation Ferromagnetic recording materials
DE3240337A1 (de) * 1982-10-30 1984-05-03 Basf Ag, 6700 Ludwigshafen Nadelfoermige ferromagnetische chromdioxidteilchen
US4495246A (en) * 1983-10-27 1985-01-22 Basf Aktiengesellschaft Acicular ferromagnetic chromium dioxide particles
JP3866074B2 (ja) * 2001-10-12 2007-01-10 富士フイルムホールディングス株式会社 強磁性金属粉末及びその製造方法並びに磁気記録媒体
EP1662256A1 (en) * 2004-11-25 2006-05-31 Spinomix S.A. Tailored magnetic particles and method to produce same
WO2014132201A1 (en) 2013-03-01 2014-09-04 Spinomix Sa A magnetic particles based separation and assaying method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809731A (en) * 1950-11-16 1957-10-15 Vickers Inc Magnetic particle coupling device with nickel-coated iron particles
US3139354A (en) * 1961-03-31 1964-06-30 Rca Corp Magnetic recording element containing magnetic particles treated with werner-type complex compound and method of manufacture thereof
US3556839A (en) * 1966-11-01 1971-01-19 Ind Distributors 1946 Ltd Electroless metal coating
US3494760A (en) * 1967-09-28 1970-02-10 Burton Electrochem Co Inc Production of metal and alloy particles by chemical reduction
US3567525A (en) * 1968-06-25 1971-03-02 Du Pont Heat treated ferromagnetic particles
US3632512A (en) * 1969-02-17 1972-01-04 Eastman Kodak Co Method of preparing magnetically responsive carrier particles
US3770500A (en) * 1969-09-16 1973-11-06 Tdk Electronics Co Ltd Magnetic materials and method of making same
US3718594A (en) * 1970-11-30 1973-02-27 Eastman Kodak Co Method of preparing magnetically responsive carrier particles

Also Published As

Publication number Publication date
DE2225796A1 (de) 1972-12-14
DE2225796B2 (de) 1977-06-08
DE2225796C3 (de) 1982-12-02
US3958068A (en) 1976-05-18

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