CH515331A - A method for producing a metal powder for magnetic recording, consisting at least essentially of iron - Google Patents

A method for producing a metal powder for magnetic recording, consisting at least essentially of iron

Info

Publication number
CH515331A
CH515331A CH318569A CH318569A CH515331A CH 515331 A CH515331 A CH 515331A CH 318569 A CH318569 A CH 318569A CH 318569 A CH318569 A CH 318569A CH 515331 A CH515331 A CH 515331A
Authority
CH
Switzerland
Prior art keywords
essentially
iron
producing
magnetic recording
metal powder
Prior art date
Application number
CH318569A
Other languages
German (de)
Inventor
Antonie Van Der Giessen Aart
Huizinga Freerk
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH515331A publication Critical patent/CH515331A/en

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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)
CH318569A 1968-03-05 1969-03-03 A method for producing a metal powder for magnetic recording, consisting at least essentially of iron CH515331A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6803123A NL6803123A (en) 1968-03-05 1968-03-05

Publications (1)

Publication Number Publication Date
CH515331A true CH515331A (en) 1971-11-15

Family

ID=19802944

Family Applications (1)

Application Number Title Priority Date Filing Date
CH318569A CH515331A (en) 1968-03-05 1969-03-03 A method for producing a metal powder for magnetic recording, consisting at least essentially of iron

Country Status (7)

Country Link
US (1) US3607219A (en)
AT (1) AT306763B (en)
BE (1) BE729304A (en)
CH (1) CH515331A (en)
FR (1) FR2003248A1 (en)
GB (1) GB1204991A (en)
NL (1) NL6803123A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922630B1 (en) * 1970-06-23 1974-06-10
US4207092A (en) * 1977-03-03 1980-06-10 E. I. Du Pont De Nemours And Company Acicular α-iron particles, their preparation and recording media employing same
JPS5813008B2 (en) * 1977-10-06 1983-03-11 日本ビクター株式会社 Manufacturing method of magnetic iron powder
US4316738A (en) * 1979-02-02 1982-02-23 Ampex Corporation Economical process for producing metal particles for magnetic recording
US4310349A (en) * 1979-02-02 1982-01-12 Ampex Corporation Highly orientable iron particles
US4273807A (en) * 1979-03-19 1981-06-16 E. I. Du Pont De Nemours And Company Acicular α-iron particles and recording media employing same
US4318734A (en) * 1980-02-25 1982-03-09 Ampex Corporation Reduction of iron oxide utilizing dehydrating agent
JPS5980901A (en) * 1982-11-01 1984-05-10 Fuji Photo Film Co Ltd Manufacture of ferromagnetic metal powder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3005701A (en) * 1957-10-15 1961-10-24 Bethlehem Steel Corp Method of making melting stock by direct reduction
US3347659A (en) * 1965-05-19 1967-10-17 Hydrocarbon Research Inc Process of reducing iron oxide

Also Published As

Publication number Publication date
NL6803123A (en) 1969-09-09
AT306763B (en) 1973-04-25
DE1906531B2 (en) 1977-01-20
DE1906531A1 (en) 1969-10-02
GB1204991A (en) 1970-09-09
BE729304A (en) 1969-09-03
US3607219A (en) 1971-09-21
FR2003248A1 (en) 1969-11-07

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Legal Events

Date Code Title Description
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