ATE114383T1 - SINTERED PERMANENT MAGNET (MATERIAL) AND PROCESS FOR PRODUCTION. - Google Patents

SINTERED PERMANENT MAGNET (MATERIAL) AND PROCESS FOR PRODUCTION.

Info

Publication number
ATE114383T1
ATE114383T1 AT92890030T AT92890030T ATE114383T1 AT E114383 T1 ATE114383 T1 AT E114383T1 AT 92890030 T AT92890030 T AT 92890030T AT 92890030 T AT92890030 T AT 92890030T AT E114383 T1 ATE114383 T1 AT E114383T1
Authority
AT
Austria
Prior art keywords
permanent magnet
hre
phase
magnetic phase
particle
Prior art date
Application number
AT92890030T
Other languages
German (de)
Inventor
Oskar Dr Pacher
Siegfried Dr Heiss
Original Assignee
Boehler Ybbstalwerke
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 Boehler Ybbstalwerke filed Critical Boehler Ybbstalwerke
Application granted granted Critical
Publication of ATE114383T1 publication Critical patent/ATE114383T1/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)
  • Compounds Of Iron (AREA)

Abstract

The invention relates to a sintered permanent magnet (material) and a process for its production using a magnetic phase of the type Se2(FeCO)14B and at least one further sinter-active or particle-combining phase. In order to achieve a high saturation magnetisation, high coercive force and high energy product with good temperature stability and high Curie point of the permanent magnet (material), it is proposed according to the invention that the magnetic phase is formed of diffusion-moulded particles, which are decreased in their surface energy, having a diameter of at most 60 mu m, the magnetic phase has contents of Co and heavy rare earths (HRE) in a certain ratio to one another, the HRE concentration being inhomogeneous over the particle cross-section and the particle-binding phase having a higher activity of the HRE at the diffusion temperature compared to the magnetic phase.
AT92890030T 1991-02-11 1992-02-10 SINTERED PERMANENT MAGNET (MATERIAL) AND PROCESS FOR PRODUCTION. ATE114383T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0028791A AT398861B (en) 1991-02-11 1991-02-11 SINTERED PERMANENT MAGNET (MATERIAL) AND METHOD FOR THE PRODUCTION THEREOF

Publications (1)

Publication Number Publication Date
ATE114383T1 true ATE114383T1 (en) 1994-12-15

Family

ID=3486534

Family Applications (2)

Application Number Title Priority Date Filing Date
AT0028791A AT398861B (en) 1991-02-11 1991-02-11 SINTERED PERMANENT MAGNET (MATERIAL) AND METHOD FOR THE PRODUCTION THEREOF
AT92890030T ATE114383T1 (en) 1991-02-11 1992-02-10 SINTERED PERMANENT MAGNET (MATERIAL) AND PROCESS FOR PRODUCTION.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AT0028791A AT398861B (en) 1991-02-11 1991-02-11 SINTERED PERMANENT MAGNET (MATERIAL) AND METHOD FOR THE PRODUCTION THEREOF

Country Status (6)

Country Link
EP (1) EP0499600B1 (en)
AT (2) AT398861B (en)
CZ (1) CZ281161B6 (en)
DE (1) DE59200795D1 (en)
HU (1) HU213284B (en)
PL (1) PL169844B1 (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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1316375C (en) * 1982-08-21 1993-04-20 Masato Sagawa Magnetic materials and permanent magnets
US4601875A (en) * 1983-05-25 1986-07-22 Sumitomo Special Metals Co., Ltd. Process for producing magnetic materials
US4857118A (en) * 1986-10-13 1989-08-15 U.S. Philips Corporation Method of manufacturing a permanent magnet
DE68927460T2 (en) * 1988-06-03 1997-04-10 Mitsubishi Materials Corp Sintered rare earth element B-FE MAGNET AND METHOD FOR THE PRODUCTION
US5000800A (en) * 1988-06-03 1991-03-19 Masato Sagawa Permanent magnet and method for producing the same
AT393177B (en) * 1989-04-28 1991-08-26 Boehler Gmbh PERMANENT MAGNET (MATERIAL) AND METHOD FOR PRODUCING THE SAME

Also Published As

Publication number Publication date
HU213284B (en) 1997-04-28
CZ281161B6 (en) 1996-07-17
EP0499600A1 (en) 1992-08-19
PL293427A1 (en) 1992-10-19
EP0499600B1 (en) 1994-11-23
CZ39292A3 (en) 1993-12-15
HUT64108A (en) 1993-11-29
DE59200795D1 (en) 1995-01-05
PL169844B1 (en) 1996-09-30
AT398861B (en) 1995-02-27
HU9200403D0 (en) 1992-04-28
ATA28791A (en) 1994-06-15

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Legal Events

Date Code Title Description
EEIH Change in the person of patent owner
REN Ceased due to non-payment of the annual fee