CH532824A - Verfahren zum Erhöhen der Koerzitivkraft und/oder der Remanenz eines hart-magnetischen Pulvers - Google Patents

Verfahren zum Erhöhen der Koerzitivkraft und/oder der Remanenz eines hart-magnetischen Pulvers

Info

Publication number
CH532824A
CH532824A CH532824DA CH532824A CH 532824 A CH532824 A CH 532824A CH 532824D A CH532824D A CH 532824DA CH 532824 A CH532824 A CH 532824A
Authority
CH
Switzerland
Prior art keywords
remanence
increasing
magnetic powder
coercive force
hard magnetic
Prior art date
Application number
Other languages
English (en)
Inventor
Willem Blijenberg Dirk
Antonie Van Der Giessen Aart
Johannes Klomp Cornelis
Zijlstra Hinne
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 CH532824A publication Critical patent/CH532824A/de

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
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/0551—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0552—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes 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
    • 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
    • H01F1/10—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • ing And Chemical Polishing (AREA)
  • Compounds Of Iron (AREA)
CH532824D 1968-03-05 1969-03-03 Verfahren zum Erhöhen der Koerzitivkraft und/oder der Remanenz eines hart-magnetischen Pulvers CH532824A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6803121A NL6803121A (de) 1968-03-05 1968-03-05

Publications (1)

Publication Number Publication Date
CH532824A true CH532824A (de) 1973-02-28

Family

ID=19802942

Family Applications (1)

Application Number Title Priority Date Filing Date
CH532824D CH532824A (de) 1968-03-05 1969-03-03 Verfahren zum Erhöhen der Koerzitivkraft und/oder der Remanenz eines hart-magnetischen Pulvers

Country Status (8)

Country Link
AT (1) AT287326B (de)
BE (1) BE729302A (de)
CH (1) CH532824A (de)
DE (1) DE1908943C3 (de)
FR (1) FR2003246A1 (de)
GB (1) GB1226456A (de)
NL (1) NL6803121A (de)
SE (1) SE348590B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102819A1 (de) * 1982-08-31 1984-03-14 Toda Kogyo Corp. Bariumferrit-Teilchen für magnetische Aufzeichnungsmedien

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2707192B1 (fr) * 1993-07-08 1995-08-11 Aimants Ugimag Sa Procédé de préparation de poudres magnétiques de type terres rares-cobalt contenant du fluor et aimants permanents densifiés correspondants.
DE19511921A1 (de) * 1995-03-31 1996-10-02 Vacuumschmelze Gmbh Behandlungsverfahren für Magnete zur optischen Kennzeichnung der magnetischen Vorzugsrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102819A1 (de) * 1982-08-31 1984-03-14 Toda Kogyo Corp. Bariumferrit-Teilchen für magnetische Aufzeichnungsmedien

Also Published As

Publication number Publication date
DE1908943B2 (de) 1979-08-16
DE1908943A1 (de) 1969-09-25
DE1908943C3 (de) 1980-05-08
GB1226456A (de) 1971-03-31
NL6803121A (de) 1969-09-09
FR2003246A1 (de) 1969-11-07
AT287326B (de) 1971-01-25
BE729302A (de) 1969-09-03
SE348590B (de) 1972-09-04

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Legal Events

Date Code Title Description
PL Patent ceased