EP0597582B1 - Anisotropes R-T-B-M Magnetpulver - Google Patents

Anisotropes R-T-B-M Magnetpulver Download PDF

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Publication number
EP0597582B1
EP0597582B1 EP19930307756 EP93307756A EP0597582B1 EP 0597582 B1 EP0597582 B1 EP 0597582B1 EP 19930307756 EP19930307756 EP 19930307756 EP 93307756 A EP93307756 A EP 93307756A EP 0597582 B1 EP0597582 B1 EP 0597582B1
Authority
EP
European Patent Office
Prior art keywords
powder
magnet
grain size
anisotropic
rare
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.)
Expired - Lifetime
Application number
EP19930307756
Other languages
English (en)
French (fr)
Other versions
EP0597582A1 (de
Inventor
Ryoji C/O Chuo-Kenkyusho Nakayama
Takuo C/O Chuo-Kenkyusho Takeshita
Yoshinari C/O Chuo-Kenkyusho Ishii
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.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
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 Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Publication of EP0597582A1 publication Critical patent/EP0597582A1/de
Application granted granted Critical
Publication of EP0597582B1 publication Critical patent/EP0597582B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01F1/0573—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 obtained by reduction or by hydrogen decrepitation or embrittlement
    • 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

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  • 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)

Claims (4)

  1. Anisotropes Magnetpulvermaterial mit der rekristallisierten feinen Aggregatstruktur einer intermetallischen Verbindungsphase des Typs R2T14B, welche eines der Seltenerdelemente, einschließlich Y, hierin als "R" bezeichnet, Fe oder einen Bestandteil, in dem ein Teil des Fe durch Co substituiert ist, hierin als "T" bezeichnet, und B als die Hauptbestandteile umfaßt und wobei die Bestandteile eine durchschnittliche rekristallisierte Korngröße von 0,05 bis 20 µm aufweisen, wobei das Pulver weiterhin eines oder mehrere von Si, Ga, Zr, Nb, Mo, Hf, Ta, W, Al, Ti und V, hierin als "M" bezeichnet, umfaßt,
    dadurch gekennzeichnet,
    daß das Material eine Gesamtmenge von 0,001 bis 5,0 Atomprozent M enthält und daß die durchschnittliche Korngröße des Pulvers innerhalb des Bereichs von 5 bis 200 µm liegt.
  2. Pulvermaterial nach Anspruch 1, worin ein Teil des Fe zusätzlich oder alternativ durch Cr, Mn, Ni, Cu oder Zn substituiert ist.
  3. Pulvermaterial nach Anspruch 1 oder 2, worin ein Teil des B durch C, N oder 0 substituiert ist.
  4. Verwendung des Pulvers nach einem der vorhergehenden Ansprüche bei der Herstellung von gebundenen oder heißgepreßten Magneten.
EP19930307756 1992-11-13 1993-09-30 Anisotropes R-T-B-M Magnetpulver Expired - Lifetime EP0597582B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4328805A JPH06151137A (ja) 1992-11-13 1992-11-13 異方性に優れた希土類磁石材料粉末
JP328805/92 1992-11-13

Publications (2)

Publication Number Publication Date
EP0597582A1 EP0597582A1 (de) 1994-05-18
EP0597582B1 true EP0597582B1 (de) 1997-12-17

Family

ID=18214300

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930307756 Expired - Lifetime EP0597582B1 (de) 1992-11-13 1993-09-30 Anisotropes R-T-B-M Magnetpulver

Country Status (3)

Country Link
EP (1) EP0597582B1 (de)
JP (1) JPH06151137A (de)
DE (2) DE69315807D1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5480471A (en) * 1994-04-29 1996-01-02 Crucible Materials Corporation Re-Fe-B magnets and manufacturing method for the same
US6004407A (en) * 1995-09-22 1999-12-21 Alps Electric Co., Ltd. Hard magnetic materials and method of producing the same
DE10255604B4 (de) 2002-11-28 2006-06-14 Vacuumschmelze Gmbh & Co. Kg Verfahren zum Herstellen eines anisotropen Magnetpulvers und eines gebundenen anisotropen Magneten daraus
CN113593799B (zh) * 2020-04-30 2023-06-13 烟台正海磁性材料股份有限公司 一种细晶、高矫顽力烧结钕铁硼磁体及其制备方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1012477B (zh) * 1987-08-19 1991-05-01 三菱金属株式会社 稀土-铁-硼磁体粉末及其制备方法
US5228930A (en) * 1989-07-31 1993-07-20 Mitsubishi Materials Corporation Rare earth permanent magnet power, method for producing same and bonded magnet

Also Published As

Publication number Publication date
DE69315807T4 (de) 1999-04-22
DE69315807D1 (de) 1998-01-29
EP0597582A1 (de) 1994-05-18
JPH06151137A (ja) 1994-05-31
DE69315807T2 (de) 1998-07-16

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