GB2016526B - Production of magnetic powder - Google Patents

Production of magnetic powder

Info

Publication number
GB2016526B
GB2016526B GB7909193A GB7909193A GB2016526B GB 2016526 B GB2016526 B GB 2016526B GB 7909193 A GB7909193 A GB 7909193A GB 7909193 A GB7909193 A GB 7909193A GB 2016526 B GB2016526 B GB 2016526B
Authority
GB
United Kingdom
Prior art keywords
production
magnetic powder
powder
magnetic
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
Application number
GB7909193A
Other versions
GB2016526A (en
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.)
Kanto Denka Kogyo Co Ltd
Original Assignee
Kanto Denka Kogyo Co 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
Priority claimed from JP3015178A external-priority patent/JPS54122664A/en
Priority claimed from JP3015078A external-priority patent/JPS54122663A/en
Application filed by Kanto Denka Kogyo Co Ltd filed Critical Kanto Denka Kogyo Co Ltd
Publication of GB2016526A publication Critical patent/GB2016526A/en
Application granted granted Critical
Publication of GB2016526B publication Critical patent/GB2016526B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B22F1/17—Metallic particles coated with metal

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
GB7909193A 1978-03-16 1979-03-15 Production of magnetic powder Expired GB2016526B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3015178A JPS54122664A (en) 1978-03-16 1978-03-16 Production of magnetic powder for magnetic recording based on iron
JP3015078A JPS54122663A (en) 1978-03-16 1978-03-16 Production of magnetic powder for magnetic recording based on iron

Publications (2)

Publication Number Publication Date
GB2016526A GB2016526A (en) 1979-09-26
GB2016526B true GB2016526B (en) 1982-11-03

Family

ID=26368438

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7909193A Expired GB2016526B (en) 1978-03-16 1979-03-15 Production of magnetic powder

Country Status (4)

Country Link
DE (1) DE2909995C2 (en)
FR (1) FR2420193A1 (en)
GB (1) GB2016526B (en)
NL (1) NL186784C (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310349A (en) * 1979-02-02 1982-01-12 Ampex Corporation Highly orientable iron particles
US4316738A (en) * 1979-02-02 1982-02-23 Ampex Corporation Economical process for producing metal particles for magnetic recording
US4256484A (en) * 1979-07-30 1981-03-17 Pfizer Inc. Metallic iron particles for magnetic recording
US4305752A (en) 1979-07-30 1981-12-15 Pfizer Inc. Metallic iron particles for magnetic recording
JPS56109827A (en) * 1980-02-05 1981-08-31 Mitsui Toatsu Chem Inc Manufacture of iron compound particle for magnetic recording medium
JPS56114833A (en) * 1980-02-08 1981-09-09 Mitsui Toatsu Chem Inc Production of fine particle of iron compound for magnetic recording
EP0041257B1 (en) * 1980-05-30 1984-11-14 Hitachi Maxell Ltd. Process for preparing ferromagnetic particles comprising metallic iron
US4305753A (en) * 1980-07-31 1981-12-15 Hercules Incorporated Process for producing ferromagnetic metallic particles
JPS57183627A (en) * 1981-05-07 1982-11-12 Fuji Photo Film Co Ltd Magnetic recording medium
US4437881A (en) * 1982-07-31 1984-03-20 Toda Kogyo Corp. Acicular ferromagnetic alloy particles and process for producing said particles
DE3228659A1 (en) * 1982-07-31 1984-02-02 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING COBALT-EPITAXIAL-COATED IRON OXIDES FOR MAGNETIC RECORDING
US4544612A (en) * 1982-09-22 1985-10-01 Nippon Telegraph & Telephone Public Corporation Iron oxide magnetic film and process for fabrication thereof
JPS5999706A (en) * 1982-11-29 1984-06-08 Kanto Denka Kogyo Kk Ferromagnetic metal powder for magnetic recording and manufacture thereof
JPS59153810A (en) * 1983-02-22 1984-09-01 Chisso Corp Production of ferromagnetic fine metallic particle
JPS59157204A (en) * 1983-02-23 1984-09-06 Chisso Corp Manufacture of ferromagnetic metallic fine particle
CA1226456A (en) * 1984-01-12 1987-09-08 Michael J. Pryor Method and apparatus for producing acicular iron or iron alloy particles
US5102732A (en) * 1988-07-15 1992-04-07 Konica Corporation Magnetic recording medium

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE527378A (en) *
DE1247026B (en) * 1965-01-09 1967-08-10 Basf Ag Process for the production of magnetizable metallic particles suitable for the production of magnetogram carriers
JPS4922630B1 (en) * 1970-06-23 1974-06-10
DE2212934A1 (en) * 1972-03-17 1973-09-20 Philips Nv Iron powder prodn for magnetic recording - by redn of needle-like crystals of iron oxide or its hydrate in presence of
NL167729C (en) * 1973-05-03 1982-01-18 Philips Nv METHOD FOR PREPARING A MAJOR METAL POWDER

Also Published As

Publication number Publication date
NL7902091A (en) 1979-09-18
DE2909995C2 (en) 1984-06-28
NL186784B (en) 1990-09-17
FR2420193A1 (en) 1979-10-12
NL186784C (en) 1991-02-18
FR2420193B1 (en) 1983-10-21
DE2909995A1 (en) 1979-09-27
GB2016526A (en) 1979-09-26

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19990314