EP0425469A3 - Permanent magnet (material) and production process - Google Patents

Permanent magnet (material) and production process Download PDF

Info

Publication number
EP0425469A3
EP0425469A3 EP19900890267 EP90890267A EP0425469A3 EP 0425469 A3 EP0425469 A3 EP 0425469A3 EP 19900890267 EP19900890267 EP 19900890267 EP 90890267 A EP90890267 A EP 90890267A EP 0425469 A3 EP0425469 A3 EP 0425469A3
Authority
EP
European Patent Office
Prior art keywords
permanent magnet
production process
production
permanent
magnet
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.)
Granted
Application number
EP19900890267
Other languages
German (de)
Other versions
EP0425469A2 (en
EP0425469B1 (en
Inventor
Oskar Dr. Pacher
Siegfried Dr. Heiss
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Boehler 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 Boehler GmbH filed Critical Boehler GmbH
Publication of EP0425469A2 publication Critical patent/EP0425469A2/en
Publication of EP0425469A3 publication Critical patent/EP0425469A3/en
Application granted granted Critical
Publication of EP0425469B1 publication Critical patent/EP0425469B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01F1/047—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0293—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
EP19900890267 1989-10-25 1990-10-05 Permanent magnet (material) and production process Expired - Lifetime EP0425469B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT245489 1989-10-25
AT245489A AT393178B (en) 1989-10-25 1989-10-25 PERMANENT MAGNET (MATERIAL) AND METHOD FOR PRODUCING THE SAME
AT2454/89 1989-10-25

Publications (3)

Publication Number Publication Date
EP0425469A2 EP0425469A2 (en) 1991-05-02
EP0425469A3 true EP0425469A3 (en) 1991-11-06
EP0425469B1 EP0425469B1 (en) 2000-04-05

Family

ID=3534648

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900890267 Expired - Lifetime EP0425469B1 (en) 1989-10-25 1990-10-05 Permanent magnet (material) and production process

Country Status (6)

Country Link
EP (1) EP0425469B1 (en)
AT (1) AT393178B (en)
CZ (1) CZ284167B6 (en)
DD (1) DD298177A5 (en)
DE (1) DE59010911D1 (en)
HU (1) HU215659B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT399415B (en) * 1991-03-18 1995-05-26 Boehler Ybbstalwerke METHOD FOR PRODUCING RARE EARTH-CONTAINING PERMANENT MAGNET (S) (MATERIALS)
WO2002013209A2 (en) * 2000-08-03 2002-02-14 Sanei Kasei Co., Limited Nanocomposite permanent magnet
JP5057111B2 (en) 2009-07-01 2012-10-24 信越化学工業株式会社 Rare earth magnet manufacturing method
MY165562A (en) 2011-05-02 2018-04-05 Shinetsu Chemical Co Rare earth permanent magnets and their preparation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208807A1 (en) * 1985-06-14 1987-01-21 Union Oil Company Of California Rare earth-iron-boron permanent magnets
EP0389626A1 (en) * 1988-06-03 1990-10-03 Mitsubishi Materials Corporation SINTERED RARE EARTH ELEMENT-B-Fe-MAGNET AND PROCESS FOR ITS PRODUCTION
EP0395625A2 (en) * 1989-04-28 1990-10-31 BÖHLER YBBSTALWERKE Ges.m.b.H. Process of Manufacturing a Permanent Magnet or Permanent Magnet Material

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6187825A (en) * 1984-10-05 1986-05-06 Hitachi Metals Ltd Manufacture of permanent magnet material
JPS6227548A (en) * 1985-07-27 1987-02-05 Sumitomo Special Metals Co Ltd Permanent magnet alloy
JPS62171102A (en) * 1986-01-23 1987-07-28 Shin Etsu Chem Co Ltd Rare earth permanent magnet and manufacture of same
US4857118A (en) * 1986-10-13 1989-08-15 U.S. Philips Corporation Method of manufacturing a permanent magnet
US4913745A (en) * 1987-03-23 1990-04-03 Tokin Corporation Method for producing a rare earth metal-iron-boron anisotropic bonded magnet from rapidly-quenched rare earth metal-iron-boron alloy ribbon-like flakes
JPH01238001A (en) * 1988-03-18 1989-09-22 Kawasaki Steel Corp Manufacture of rare earth permanent magnet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208807A1 (en) * 1985-06-14 1987-01-21 Union Oil Company Of California Rare earth-iron-boron permanent magnets
EP0389626A1 (en) * 1988-06-03 1990-10-03 Mitsubishi Materials Corporation SINTERED RARE EARTH ELEMENT-B-Fe-MAGNET AND PROCESS FOR ITS PRODUCTION
EP0395625A2 (en) * 1989-04-28 1990-10-31 BÖHLER YBBSTALWERKE Ges.m.b.H. Process of Manufacturing a Permanent Magnet or Permanent Magnet Material

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSLATION JOURNAL on MAGNETICS in JAPAN vol. 3, no. 2, Februar 1988, NEW YORK US Seiten 145 - 151; K.OHASHI ET AL.: "Effects of Rare Earth Oxide Addition on Nd Fe B Magnets" *
PATENT ABSTRACTS OF JAPAN vol. 11, no. 206 (C-433)(2653) 3 Juli 1987, & JP-A-62 27548 (SUMITOMO SPECIAL METALS CO LTD) 05 Februar 1987, *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 9 (E-572)(2856) 12 Januar 1988, & JP-A-62 171102 (SHIN ETSU CHEM CO LTD) 28 Juli 1987, *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 568 (E-861)(3916) 15 Dezember 1989, & JP-A-1 238001 (KAWASAKI STEEL CORP.) 22 September 1989, *

Also Published As

Publication number Publication date
HU906544D0 (en) 1991-04-29
DD298177A5 (en) 1992-02-06
HU215659B (en) 1999-02-01
CS514190A3 (en) 1992-05-13
ATA245489A (en) 1991-01-15
DE59010911D1 (en) 2000-09-21
AT393178B (en) 1991-08-26
CZ284167B6 (en) 1998-09-16
EP0425469A2 (en) 1991-05-02
HUT58948A (en) 1992-03-30
EP0425469B1 (en) 2000-04-05

Similar Documents

Publication Publication Date Title
EP0153744A3 (en) Process for producing permanent magnets and products thereof
EP0190461A3 (en) Process for producing permanent magnets and permanent magnet
ZA901076B (en) Improved production process and apparatus
EP0375781A4 (en) Electret material and process for preparing electret material
EP0354152A3 (en) Improved programmable magnetic repulsion punching apparatus
YU45490A (en) Process for preparing glicozated insulines and their mixtures
HU903853D0 (en) Process for producing pyrrholo-pyrimidines and their intermediaires
DE3380612D1 (en) Isotropic permanent magnets and process for producing same
EP0411433A3 (en) Branched polycarbonate and process for production thereof
EP0380248A3 (en) Modified polydextrose and process therefor
HU902587D0 (en) Permanent magnet material and process for production thereof
EP0406004A3 (en) Method of introducing magnetic anisotropy into magnetic material
NZ231876A (en) Magnetic disinfection process and apparatus
EP0427227A3 (en) Fibrous anisotropic permanent magnet and production process thereof
EP0425469A3 (en) Permanent magnet (material) and production process
LTIP1406A (en) Edulcorant and its preparation process
EP0389636A4 (en) Material for mold and process for forming mold using same
EP0420276A3 (en) Display and process for production thereof
GB8902788D0 (en) Ceramic material and process for its production
EP0423686A3 (en) Silacyclobutanes and process for preparation
GB8920253D0 (en) Glass-ceramic material and production thereof
GB8713696D0 (en) Producing magnetic material
CS9002131A2 (en) Permanent magnet and method of its production
GB2238306B (en) Highly conductive magnetic material
GB9022033D0 (en) A method of making a material with permanent magnetic properties

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19901019

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE CH DE FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE CH DE FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 19930322

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BOEHLER YBBSTALWERKE GES.M.B.H.

18D Application deemed to be withdrawn

Effective date: 19941122

D18D Application deemed to be withdrawn (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VACUUMSCHMELZE GMBH

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE FR GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000405

ITF It: translation for a ep patent filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000705

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20000623

ET Fr: translation filed
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8570

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REF Corresponds to:

Ref document number: 59010911

Country of ref document: DE

Date of ref document: 20000921

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001031

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: VACUUMSCHMELZE G.M.B.H.

Effective date: 20001031

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20011024

Year of fee payment: 12

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021031

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021031

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040921

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20041019

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051005

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051005

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: DIPL.-ING. ETH H. R. WERFFELI PATENTANWALT

Ref country code: CH

Ref legal event code: NV

Representative=s name: SIEMENS SCHWEIZ AG

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20051005

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060630

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060630

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20071129

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090501