AT287326B - Method for increasing the coercive force and / or the remanence of a hard magnetic powder - Google Patents

Method for increasing the coercive force and / or the remanence of a hard magnetic powder

Info

Publication number
AT287326B
AT287326B AT209669A AT209669A AT287326B AT 287326 B AT287326 B AT 287326B AT 209669 A AT209669 A AT 209669A AT 209669 A AT209669 A AT 209669A AT 287326 B AT287326 B AT 287326B
Authority
AT
Austria
Prior art keywords
remanence
increasing
magnetic powder
coercive force
hard magnetic
Prior art date
Application number
AT209669A
Other languages
German (de)
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
Application granted granted Critical
Publication of AT287326B publication Critical patent/AT287326B/en

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)
AT209669A 1968-03-05 1969-03-03 Method for increasing the coercive force and / or the remanence of a hard magnetic powder AT287326B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
AT287326B true AT287326B (en) 1971-01-25

Family

ID=19802942

Family Applications (1)

Application Number Title Priority Date Filing Date
AT209669A AT287326B (en) 1968-03-05 1969-03-03 Method for increasing the coercive force and / or the remanence of a hard magnetic powder

Country Status (8)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2646348C2 (en) * 1976-10-14 1986-08-28 Basf Ag, 6700 Ludwigshafen Process for the production of acicular, ferromagnetic metal particles consisting essentially of iron and their use for the production of magnetic recording media
JPS5941806A (en) * 1982-08-31 1984-03-08 Toda Kogyo Corp Manufacture of tabular ba ferrite particle powder for magnetic recording
FR2707192B1 (en) * 1993-07-08 1995-08-11 Aimants Ugimag Sa Process for the preparation of magnetic powders of the rare earth-cobalt type containing fluorine and corresponding densified permanent magnets.
DE19511921A1 (en) * 1995-03-31 1996-10-02 Vacuumschmelze Gmbh Treatment method for magnets for optical identification of the preferred magnetic direction

Also Published As

Publication number Publication date
DE1908943B2 (en) 1979-08-16
NL6803121A (en) 1969-09-09
DE1908943A1 (en) 1969-09-25
SE348590B (en) 1972-09-04
BE729302A (en) 1969-09-03
GB1226456A (en) 1971-03-31
CH532824A (en) 1973-02-28
FR2003246A1 (en) 1969-11-07
DE1908943C3 (en) 1980-05-08

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee