BE888933A - Procede de reduction d'un oxyde de fer aciculaire pour produire des particules metalliques aciculaires convenant a l'enregistrement magnetique - Google Patents

Procede de reduction d'un oxyde de fer aciculaire pour produire des particules metalliques aciculaires convenant a l'enregistrement magnetique

Info

Publication number
BE888933A
BE888933A BE0/204882A BE204882A BE888933A BE 888933 A BE888933 A BE 888933A BE 0/204882 A BE0/204882 A BE 0/204882A BE 204882 A BE204882 A BE 204882A BE 888933 A BE888933 A BE 888933A
Authority
BE
Belgium
Prior art keywords
acicular
magnetic recording
iron oxide
metal particles
particles suitable
Prior art date
Application number
BE0/204882A
Other languages
English (en)
Inventor
Hillard M Kahan
William F Acebo
Michael K Stafford
Original Assignee
Ampex
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 Ampex filed Critical Ampex
Publication of BE888933A publication Critical patent/BE888933A/fr

Links

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
    • 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
    • B22F1/16—Metallic particles coated with a non-metal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/008—Use of special additives or fluxing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B15/00—Other processes for the manufacture of iron from iron compounds
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hard Magnetic Materials (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
BE0/204882A 1980-05-23 1981-05-22 Procede de reduction d'un oxyde de fer aciculaire pour produire des particules metalliques aciculaires convenant a l'enregistrement magnetique BE888933A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/152,933 US4310349A (en) 1979-02-02 1980-05-23 Highly orientable iron particles

Publications (1)

Publication Number Publication Date
BE888933A true BE888933A (fr) 1981-09-16

Family

ID=22545065

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/204882A BE888933A (fr) 1980-05-23 1981-05-22 Procede de reduction d'un oxyde de fer aciculaire pour produire des particules metalliques aciculaires convenant a l'enregistrement magnetique

Country Status (8)

Country Link
US (1) US4310349A (fr)
JP (1) JPS6018130B2 (fr)
BE (1) BE888933A (fr)
CA (1) CA1162052A (fr)
DE (1) DE3120456C2 (fr)
FR (1) FR2482945B1 (fr)
IT (1) IT1170992B (fr)
NL (1) NL8102543A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3231192A1 (de) * 1982-08-21 1984-02-23 Basf Ag, 6700 Ludwigshafen Geformte eisenkatalysatormasse, deren herstellung und verwendung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2963360A (en) * 1957-06-14 1960-12-06 Dow Chemical Co Agglomerating titaniferous materials by use of hydrochloric acid
US3185563A (en) * 1961-05-17 1965-05-25 R N Corp Method and means for prevention of reoxidation of iron concentrates and the like
FR1587959A (fr) * 1967-11-25 1970-04-03
NL6803123A (fr) * 1968-03-05 1969-09-09
US3558371A (en) * 1968-05-20 1971-01-26 Gen Electric Method of making permanent magnet material powders
US3626124A (en) * 1969-11-17 1971-12-07 Peter A Denes Arc and spark extinguishing contacts utilizing single domain magnetic particles
US3653875A (en) * 1971-03-02 1972-04-04 Us Interior Recovery of metals and phosphate from waste phosphate sludge
DE2434096C2 (de) * 1974-07-16 1985-10-17 Basf Ag, 6700 Ludwigshafen Nadelförmige, vorwiegend aus Eisen bestehende ferromagnetische Metallteilchen und Verfahren zu ihrer Herstellung
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
US4072501A (en) * 1977-04-13 1978-02-07 The United States Of America As Represented By The United States Department Of Energy Method of producing homogeneous mixed metal oxides and metal-metal oxide mixtures
DE2743298A1 (de) * 1977-09-27 1979-04-05 Basf Ag Ferromagnetische, im wesentlichen aus eisen bestehende metallteilchen und verfahren zu deren herstellung
DE2909995C2 (de) * 1978-03-16 1984-06-28 Kanto Denka Kogyo Co., Ltd., Tokyo Verfahren zur Herstellung eines Magnetpulvers

Also Published As

Publication number Publication date
US4310349A (en) 1982-01-12
IT8148510A1 (it) 1982-11-21
DE3120456C2 (de) 1984-09-27
FR2482945A1 (fr) 1981-11-27
DE3120456A1 (de) 1982-02-11
NL8102543A (nl) 1981-12-16
IT8148510A0 (it) 1981-05-21
FR2482945B1 (fr) 1985-07-05
IT1170992B (it) 1987-06-03
JPS5721802A (en) 1982-02-04
CA1162052A (fr) 1984-02-14
JPS6018130B2 (ja) 1985-05-09

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: AMPEX MEDIA CORP.

Effective date: 19930531