GR3022263T3 - Permanent magnet material or sintered magnet and fabrication process - Google Patents

Permanent magnet material or sintered magnet and fabrication process

Info

Publication number
GR3022263T3
GR3022263T3 GR970400032T GR970400032T GR3022263T3 GR 3022263 T3 GR3022263 T3 GR 3022263T3 GR 970400032 T GR970400032 T GR 970400032T GR 970400032 T GR970400032 T GR 970400032T GR 3022263 T3 GR3022263 T3 GR 3022263T3
Authority
GR
Greece
Prior art keywords
permanent magnet
fabrication process
atom
magnetic
phases
Prior art date
Application number
GR970400032T
Other languages
Greek (el)
Inventor
Adolf Dipl-Ing Diebold
Oskar Dr Pacher
Siegfried Dr Heiss
Original Assignee
Vacuumschmelze Gmbh
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 Vacuumschmelze Gmbh filed Critical Vacuumschmelze Gmbh
Publication of GR3022263T3 publication Critical patent/GR3022263T3/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
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Magnetic Ceramics (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

The invention relates to a permanent magnet (material) containing 8 to 30 atom % of rare earths (SE), 2 to 28 atom % of boron, the remainder being iron (Fe) and cobalt (Co), and to a process for fabricating it. To obtain high magnetic characteristics coupled with improved temperature stability and increased Curie temperature of the permanent magnet (material), it is provided according to the invention that the hard-magnetic fraction consists of at least two magnetic phases, at least one further peripheral phase being attached to the grains, formed by inward diffusion, of at least one central phase, or associated therewith, and the paramagnetic binder phases having a higher concentration of SE.
GR970400032T 1991-03-18 1997-01-09 Permanent magnet material or sintered magnet and fabrication process GR3022263T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0059691A AT399415B (en) 1991-03-18 1991-03-18 METHOD FOR PRODUCING RARE EARTH-CONTAINING PERMANENT MAGNET (S) (MATERIALS)

Publications (1)

Publication Number Publication Date
GR3022263T3 true GR3022263T3 (en) 1997-04-30

Family

ID=3494767

Family Applications (1)

Application Number Title Priority Date Filing Date
GR970400032T GR3022263T3 (en) 1991-03-18 1997-01-09 Permanent magnet material or sintered magnet and fabrication process

Country Status (9)

Country Link
EP (1) EP0505348B1 (en)
AT (2) AT399415B (en)
CZ (1) CZ281163B6 (en)
DE (1) DE59207356D1 (en)
DK (1) DK0505348T3 (en)
ES (1) ES2095454T3 (en)
GR (1) GR3022263T3 (en)
HU (1) HU216373B (en)
PL (1) PL293878A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4331563A1 (en) * 1992-09-18 1994-03-24 Hitachi Metals Ltd Sintered permanent magnet with good thermal stability - containing defined percentages by weight of specified elements

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3729361A1 (en) * 1987-09-02 1989-03-16 Max Planck Gesellschaft OPTIMIZATION OF THE STRUCTURE OF THE FE-ND-B BASE SINTER MAGNET
AT393177B (en) * 1989-04-28 1991-08-26 Boehler Gmbh PERMANENT MAGNET (MATERIAL) AND METHOD FOR PRODUCING THE SAME
AT393178B (en) * 1989-10-25 1991-08-26 Boehler Gmbh PERMANENT MAGNET (MATERIAL) AND METHOD FOR PRODUCING THE SAME

Also Published As

Publication number Publication date
AT399415B (en) 1995-05-26
HU216373B (en) 1999-06-28
CZ281163B6 (en) 1996-07-17
ES2095454T3 (en) 1997-02-16
HUT62341A (en) 1993-04-28
HU9200889D0 (en) 1992-05-28
DK0505348T3 (en) 1997-03-24
EP0505348A1 (en) 1992-09-23
PL293878A1 (en) 1992-10-19
ATA59691A (en) 1994-09-15
EP0505348B1 (en) 1996-10-16
CZ78492A3 (en) 1993-12-15
ATE144348T1 (en) 1996-11-15
DE59207356D1 (en) 1996-11-21

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