EP0255816A3 - Verfahren zur Herstellung korrosionsbeständiger, hartmagnetischer Pulver für die Magneterzeugung, Magnete aus hartmagnetischen Pulver und Verfahren zu deren Herstellung - Google Patents

Verfahren zur Herstellung korrosionsbeständiger, hartmagnetischer Pulver für die Magneterzeugung, Magnete aus hartmagnetischen Pulver und Verfahren zu deren Herstellung Download PDF

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Publication number
EP0255816A3
EP0255816A3 EP87890182A EP87890182A EP0255816A3 EP 0255816 A3 EP0255816 A3 EP 0255816A3 EP 87890182 A EP87890182 A EP 87890182A EP 87890182 A EP87890182 A EP 87890182A EP 0255816 A3 EP0255816 A3 EP 0255816A3
Authority
EP
European Patent Office
Prior art keywords
permanent
magnet
powder
manufacturing
corrosion resistant
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.)
Withdrawn
Application number
EP87890182A
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English (en)
French (fr)
Other versions
EP0255816A2 (de
Inventor
Herwig Dr. Winkler
Alexander Dr. Bouvier
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.)
Treibacher Chemische Werke AG
Original Assignee
Treibacher Chemische Werke AG
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 Treibacher Chemische Werke AG filed Critical Treibacher Chemische Werke AG
Publication of EP0255816A2 publication Critical patent/EP0255816A2/de
Publication of EP0255816A3 publication Critical patent/EP0255816A3/de
Withdrawn legal-status Critical Current

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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
    • H01F1/0578—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 bonded together
    • 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
    • H01F1/0572—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 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
    • H01F1/047—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
    • H01F1/0576—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 pressed, e.g. hot working

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)

Abstract

Ein Verfahren zur Herstellung korrosionsbeständiger, hart­ magnetischer Pulver aus einer Legierung des Grundtyps SE-Fe-B für die Magneterzeugung, wobei die so hergestellten Magnetpul­ ver sich durch hervorragende Beständigkeit gegenüber Oxidation auszeichnen und ohne Sinterung zu isotropen oder anisotropen Magneten mit hoher Koerzitivfeldstärke und maximalem Energie­ produkt verarbeitet werden können. Dieses wird dadurch erreicht, daß die stückig oder in Form von Ingots vorliegende Ausgangsle­ gierung zerkleinert wird, die so erhaltenen Pulverpartikel zur Verbesserung ihrer magnetischen Eigenschaften, vorzugsweise in einem Temperaturbereich von 300 - 1000°C, wärmebehandelt und an­ schließend die Oberfläche der einzelnen wärmebehandelten Pulver­ partikel zur Verhinderung der Korrosion mit einer keramischen oder metallischen Schutzschicht überzogen wird, wobei die metal­ lische Beschichtung vorzugsweise auf elektrolytischem Weg aus einer wässerigen Lösung erfolgt. Die Erfindung betrifft auch ei­ nen Magneten aus hartmagnetischem Pulver, der dadurch gekennzeich­ net ist, daß die Pulverpartikel aus einer Legierung bestehen, die 25-45 Gew.-% SE, 0,5 - 3 Gew.-% B und Eisen oder eine Kombination von Eisen mit mindestens einem anderen Metall der Gruppe Kobalt, Aluminium und Niob enthält und mit einer keramischen oder metall­ ischen Schutzschicht überzogen sind.
EP87890182A 1986-08-04 1987-07-31 Verfahren zur Herstellung korrosionsbeständiger, hartmagnetischer Pulver für die Magneterzeugung, Magnete aus hartmagnetischen Pulver und Verfahren zu deren Herstellung Withdrawn EP0255816A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2093/86 1986-08-04
AT209386A AT386554B (de) 1986-08-04 1986-08-04 Verfahren zur herstellung korrosionsbestaendiger, hartmagnetischer pulver fuer die magneterzeugung, magnete aus hartmagnetischem pulver und verfahren zu deren herstellung

Publications (2)

Publication Number Publication Date
EP0255816A2 EP0255816A2 (de) 1988-02-10
EP0255816A3 true EP0255816A3 (de) 1988-12-21

Family

ID=3527596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87890182A Withdrawn EP0255816A3 (de) 1986-08-04 1987-07-31 Verfahren zur Herstellung korrosionsbeständiger, hartmagnetischer Pulver für die Magneterzeugung, Magnete aus hartmagnetischen Pulver und Verfahren zu deren Herstellung

Country Status (3)

Country Link
EP (1) EP0255816A3 (de)
JP (1) JPS6338216A (de)
AT (1) AT386554B (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2623731B2 (ja) * 1988-07-29 1997-06-25 三菱マテリアル株式会社 希土類―Ｆｅ―Ｂ系異方性永久磁石の製造法
JPH0283905A (ja) * 1988-09-20 1990-03-26 Sumitomo Special Metals Co Ltd 耐食性永久磁石およびその製造方法
EP0452580B1 (de) * 1990-04-19 1999-06-23 Seiko Epson Corporation Kunstharzgebundener Magnet und dessen Herstellungsverfahren
JP3047239B2 (ja) * 1989-04-14 2000-05-29 日立金属株式会社 温間加工磁石及びその製造方法
US4990876A (en) * 1989-09-15 1991-02-05 Eastman Kodak Company Magnetic brush, inner core therefor, and method for making such core
CA2070808A1 (en) * 1990-10-09 1992-04-10 Barbara K. Lograsso Method of making permanent magnets
GB9803970D0 (en) * 1998-02-26 1998-04-22 Univ Birmingham Method of applying a corrosion-resistant coating
DE19902679C1 (de) * 1999-01-23 2000-11-16 Harman Audio Electronic Sys Lautsprecher
US6753751B2 (en) * 2000-11-30 2004-06-22 Nec Tokin Corporation Magnetic core including magnet for magnetic bias and inductor component using the same
DE102013004985A1 (de) * 2012-11-14 2014-05-15 Volkswagen Aktiengesellschaft Verfahren zur Herstellung eines Permanentmagneten sowie Permanentmagnet
DE102013213494A1 (de) 2013-07-10 2015-01-29 Volkswagen Aktiengesellschaft Verfahren zur Herstellung eines Permanentmagneten sowie Permanentmagnet und elektrische Maschine mit einem solchen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59155106A (ja) * 1983-02-23 1984-09-04 Hitachi Maxell Ltd 金属磁性粉末の製造法
EP0125752A2 (de) * 1983-05-09 1984-11-21 General Motors Corporation Gebundene seltene Erden-Eisen-Magnete
JPS6054406A (ja) * 1983-09-03 1985-03-28 Sumitomo Special Metals Co Ltd 耐酸化性のすぐれた永久磁石
JPS60189901A (ja) * 1984-03-09 1985-09-27 Sumitomo Special Metals Co Ltd 希土類・ボロン・鉄系永久磁石用合金粉末の製造方法
EP0190461A2 (de) * 1984-12-24 1986-08-13 Sumitomo Special Metals Co., Ltd. Verfahren zur Herstellung von Dauermagneten und Dauermagnet

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1914137B2 (de) * 1969-03-20 1976-09-23 Siemens AG, 1000 Berlin und 8000 München Verfahren zur herstellung von dauermagneten
DE2421605B2 (de) * 1974-05-04 1977-05-05 Verfahren zur herstellung von pulver fuer dauermagneten auf der basis von kobalt-seltenerden-verbindungen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59155106A (ja) * 1983-02-23 1984-09-04 Hitachi Maxell Ltd 金属磁性粉末の製造法
EP0125752A2 (de) * 1983-05-09 1984-11-21 General Motors Corporation Gebundene seltene Erden-Eisen-Magnete
JPS6054406A (ja) * 1983-09-03 1985-03-28 Sumitomo Special Metals Co Ltd 耐酸化性のすぐれた永久磁石
JPS60189901A (ja) * 1984-03-09 1985-09-27 Sumitomo Special Metals Co Ltd 希土類・ボロン・鉄系永久磁石用合金粉末の製造方法
EP0190461A2 (de) * 1984-12-24 1986-08-13 Sumitomo Special Metals Co., Ltd. Verfahren zur Herstellung von Dauermagneten und Dauermagnet

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Band 104, Nr. 24, Juni 1986, Seite 705, Zusammenfassung Nr. 217825y, Columbus, Ohio, US; A.S. KONONENKO et al.: "Effect of heat treatment on the coercive force of neodymium-iron-boron alloy magnets", & IZV. AKAD. NAUK SSSR, MET. 1986, (2), 182-4 *
PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 32 (E-379)[2089], 7. Februar 1986; & JP-A-60 189 901 (SUMITOMO TOKUSHIYU KINZOKU K.K.) 27-09-1985 *
PATENT ABSTRACTS OF JAPAN, Band 9, Nr. 185 (E-332)[1908], 31. Juli 1985; & JP-A-60 54 406 (SUMITOMO TOKUSHIYU KINZOKU K.K.) 28-03-1985 *
PATENT ABSTRACTS OF JAPAN, Band 9, Nr. 4 (E-288)[1727], 10. Januar 1985; & JP-A-59 155 106 (HITACHI MAXELL K.K.) 04-09-1984 *

Also Published As

Publication number Publication date
ATA209386A (de) 1988-02-15
EP0255816A2 (de) 1988-02-10
AT386554B (de) 1988-09-12
JPS6338216A (ja) 1988-02-18

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Inventor name: WINKLER, HERWIG, DR.

Inventor name: BOUVIER, ALEXANDER, DR.