DE3579511D1 - Magnetisches pulver und dessen herstellungsverfahren. - Google Patents

Magnetisches pulver und dessen herstellungsverfahren.

Info

Publication number
DE3579511D1
DE3579511D1 DE8585304498T DE3579511T DE3579511D1 DE 3579511 D1 DE3579511 D1 DE 3579511D1 DE 8585304498 T DE8585304498 T DE 8585304498T DE 3579511 T DE3579511 T DE 3579511T DE 3579511 D1 DE3579511 D1 DE 3579511D1
Authority
DE
Germany
Prior art keywords
production process
magnetic powder
powder
magnetic
production
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 - Fee Related
Application number
DE8585304498T
Other languages
English (en)
Inventor
Tadatoshi Honda
Takeshi Tsuda
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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
Priority claimed from JP59129208A external-priority patent/JPS619501A/ja
Priority claimed from JP60093765A external-priority patent/JPS61253302A/ja
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Application granted granted Critical
Publication of DE3579511D1 publication Critical patent/DE3579511D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H01F1/0572—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
DE8585304498T 1984-06-25 1985-06-25 Magnetisches pulver und dessen herstellungsverfahren. Expired - Fee Related DE3579511D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59129208A JPS619501A (ja) 1984-06-25 1984-06-25 磁性粉末の処理方法
JP60093765A JPS61253302A (ja) 1985-05-02 1985-05-02 磁性粉末の処理法

Publications (1)

Publication Number Publication Date
DE3579511D1 true DE3579511D1 (de) 1990-10-11

Family

ID=26435056

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585304498T Expired - Fee Related DE3579511D1 (de) 1984-06-25 1985-06-25 Magnetisches pulver und dessen herstellungsverfahren.

Country Status (3)

Country Link
US (1) US4668283A (de)
EP (1) EP0166597B1 (de)
DE (1) DE3579511D1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3683929D1 (de) * 1985-06-10 1992-03-26 Takeuchi Press Harzgebundene magnetische zusammensetzung und verfahren zur herstellung magnetischer gussstuecke daraus.
EP0249973B1 (de) * 1986-06-16 1991-11-06 Tokin Corporation Dauermagnet-Material und Verfahren zur Herstellung
US4876305A (en) * 1987-12-14 1989-10-24 The B. F. Goodrich Company Oxidation resistant compositions for use with rare earth magnets
US5173206A (en) * 1987-12-14 1992-12-22 The B. F. Goodrich Company Passivated rare earth magnet or magnetic material compositions
US5318838A (en) * 1988-01-22 1994-06-07 Fuji Photo Film Co., Ltd. Magnetic recording medium comprising ferromagnetic particles, binder resins and phenyl phosphonic acid
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
DE59106529D1 (de) * 1990-11-01 1995-10-26 Basf Magnetics Gmbh Magnetischer Aufzeichnungsträger.
JPH07106110A (ja) * 1993-10-06 1995-04-21 Yasunori Takahashi ボンド磁石製造用粉末組成物、磁気異方性永久磁石及び磁気異方性永久磁石の製造法
JPH07272913A (ja) * 1994-03-30 1995-10-20 Kawasaki Teitoku Kk 永久磁石原料、その製造法及び永久磁石
GB2313832B (en) * 1996-06-03 1999-11-24 Minnesota Mining & Mfg Surface modification of magnetic particle pigments
US6099895A (en) * 1997-05-29 2000-08-08 Imation Corp. Surface modification of magnetic particle pigments
JP3882490B2 (ja) * 2000-10-13 2007-02-14 住友金属鉱山株式会社 高耐候性磁石粉の製造方法及び得られる製品
JP3882545B2 (ja) * 2000-11-13 2007-02-21 住友金属鉱山株式会社 高耐候性磁石粉及びこれを用いた磁石
US20050062572A1 (en) * 2003-09-22 2005-03-24 General Electric Company Permanent magnet alloy for medical imaging system and method of making
JP4552090B2 (ja) * 2007-10-12 2010-09-29 ミネベア株式会社 希土類ボンド磁石、及びその製造方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2232352A (en) * 1936-04-29 1941-02-18 Rca Corp Production of magnetic material
US2306198A (en) * 1937-04-26 1942-12-22 Verweij Evert Johannes Willem Production of magnetic material
US3558371A (en) * 1968-05-20 1971-01-26 Gen Electric Method of making permanent magnet material powders
BE756431A (fr) * 1969-09-20 1971-03-22 Philips Nv Procede permettant la fabrication d'un corps presentant des proprietes anisotropes magnetiques permanentes
DE2646348C2 (de) * 1976-10-14 1986-08-28 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von nadelförmigen, ferromagnetischen, im wesentlichen aus Eisen bestehenden Metallteilchen und deren Verwendung zur Herstellung von magnetischen Aufzeichnungsträgern
FR2386486A1 (fr) * 1977-04-07 1978-11-03 Montedison Spa Bioxyde de chrome ferromagnetique stabilise et son procede de preparation
JPS5766605A (en) * 1980-10-13 1982-04-22 Toshiba Corp Rare-earth cobalt permanent magnet
JPS5953601A (ja) * 1982-08-24 1984-03-28 Dainippon Ink & Chem Inc 安定な強磁性金属粉末の製造方法
EP0111331B1 (de) * 1982-12-14 1988-06-01 Shin-Etsu Chemical Co., Ltd. Mit farbbedecktem magnetischem Metallpulver imprägnierte Kunststoffmagnete
JPS59180830A (ja) * 1983-03-31 1984-10-15 Kao Corp 磁気記録媒体
CA1215223A (en) * 1983-07-04 1986-12-16 Tokuji Abe Composition for plastic magnets

Also Published As

Publication number Publication date
EP0166597B1 (de) 1990-09-05
US4668283A (en) 1987-05-26
EP0166597A3 (en) 1987-06-03
EP0166597A2 (de) 1986-01-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee