WO2013003926A1 - Procédé de récupération d'alliage lanthanide-métal-métalloïde en poudre nanoparticulaire avec récupération magnétique et produit - Google Patents

Procédé de récupération d'alliage lanthanide-métal-métalloïde en poudre nanoparticulaire avec récupération magnétique et produit Download PDF

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Publication number
WO2013003926A1
WO2013003926A1 PCT/BR2012/000232 BR2012000232W WO2013003926A1 WO 2013003926 A1 WO2013003926 A1 WO 2013003926A1 BR 2012000232 W BR2012000232 W BR 2012000232W WO 2013003926 A1 WO2013003926 A1 WO 2013003926A1
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WO
WIPO (PCT)
Prior art keywords
product
magnetic
hddr
recombination
alloy
Prior art date
Application number
PCT/BR2012/000232
Other languages
English (en)
Portuguese (pt)
Inventor
Élio Alberto PÉRIGO
Suelanny Carvalho da SILVA
Hidetoshi TAKIISHI
Ramon Valls MARTIN
Fernando José Gomes LANDGRAF
Original Assignee
Instituto De Pesquisas Tecnológicas Do Estado De São Paulo
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 Instituto De Pesquisas Tecnológicas Do Estado De São Paulo filed Critical Instituto De Pesquisas Tecnológicas Do Estado De São Paulo
Priority to BR112013030793A priority Critical patent/BR112013030793A2/pt
Publication of WO2013003926A1 publication Critical patent/WO2013003926A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/05—Metallic powder characterised by the size or surface area of the particles
    • B22F1/054—Nanosized particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/05—Metallic powder characterised by the size or surface area of the particles
    • B22F1/054—Nanosized particles
    • B22F1/056—Submicron particles having a size above 100 nm up to 300 nm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/005—Pretreatment specially adapted for magnetic separation
    • B03C1/01—Pretreatment specially adapted for magnetic separation by addition of magnetic adjuvants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F2009/001—Making metallic powder or suspensions thereof from scrap particles

Definitions

  • Figure 2 - X-ray diffractograms of powders prepared with the HDDR process. Neodymium oxide peaks, Nd and Fe are identified, and unidentified peaks refer to the Nd 2 Fe-i 4 B phase.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Composite Materials (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)

Abstract

L'invention concerne un procédé de récupération d'alliage lanthanide-métal-métalloïde en poudre nanoparticulaire avec récupération magnétique et produit, trouvant une application dans le secteur des aimants ou corps magnétiques durs de matières inorganiques contenant des éléments du groupe des lanthanides sous forme de microparticules formées par des grains à l'échelle nanométrique, ayant pour but la préparation de poudres isotropes à haute coercivité à partir de pièces frittées fabriquées avec un alliage constitué par au moins un élément du groupe des lanthanides (LA), au moins un métal de transition (MT) et au moins un métalloïde (ML), cet alliage étant représenté par LA-MT-ML, avec recours à un traitement HDDR sans quelconque élément d'alliage, additif ou modificateur de surface avec Dy, la nouveauté et l'activité inventive consistant en la modification dans l'étape de recombinaison, une période de temps réduite étant observée, l'ensemble du traitement HDDR durant moins de 120 minutes, soit moins qu'avec celui communément décrit dans la littérature disponible. Quant au produit, la nouveauté et l'activité inventive résident dans l'obtention de la coercivité intrinsèque de la matière retraitée avec une valeur minimale de 90% de celle vérifiée sur la pièce à recycler. Le produit obtenu consiste en une matière isotrope nanoparticulaire, avec taille moyenne des particules comprise entre 10 et 300 micromètres, de préférence 50 micromètres, chaque particule de la matière obtenue après le traitement HDDR pouvant présenter des grains de dimensions comprises entre 50 et 500 nanomètres, de préférence 300 nanomètres. Le produit peut être utilisé dans des applications requérant une haute résistance à la démagnétisation, notamment dans les moteurs lorsqu'il est sous forme de poudre ou de pièces consolidées, avec ou sans utilisation d'agglomérants, et peut être considéré comme une option peu coûteuse pour le remplacement d'oxydes magnétiques, la matière brute ayant déjà été mise au rebut et aucun traitement additionnel n'étant requis, hormis le traitement HDDR et le liant.
PCT/BR2012/000232 2011-07-01 2012-07-02 Procédé de récupération d'alliage lanthanide-métal-métalloïde en poudre nanoparticulaire avec récupération magnétique et produit WO2013003926A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR112013030793A BR112013030793A2 (pt) 2011-07-01 2012-07-02 processo de recuperação de liga lantanídeo-metal-metalóide em pó nanoparticulado com recuperação magnética e produto

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI1103341-0 2011-07-01
BRPI1103341 2011-07-01

Publications (1)

Publication Number Publication Date
WO2013003926A1 true WO2013003926A1 (fr) 2013-01-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2012/000232 WO2013003926A1 (fr) 2011-07-01 2012-07-02 Procédé de récupération d'alliage lanthanide-métal-métalloïde en poudre nanoparticulaire avec récupération magnétique et produit

Country Status (2)

Country Link
BR (1) BR112013030793A2 (fr)
WO (1) WO2013003926A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8088798B2 (en) 2006-03-10 2012-01-03 Jensen Discovery, Inc. Cannabinoid receptor antagonists/inverse agonists useful for treating obesity
CN103426624A (zh) * 2013-08-14 2013-12-04 林建强 钕铁硼永磁体的制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060162821A1 (en) * 2002-11-28 2006-07-27 Reppel Georg W Method for the production of an anisotropic magnetic powder and a bonded anisotropic magnet produced therefrom
CN1901105A (zh) * 2005-07-18 2007-01-24 漯河市三鑫稀土永磁材料有限责任公司 高耐温性hddr钕铁硼各向异性磁粉及其制备方法
JP2011184730A (ja) * 2010-03-08 2011-09-22 Tdk Corp 希土類合金粉末の製造方法及び永久磁石
JP2011190482A (ja) * 2010-03-12 2011-09-29 Tdk Corp 希土類合金粉末の製造方法および永久磁石
WO2012072989A1 (fr) * 2010-12-02 2012-06-07 The University Of Birmingham Recyclage d'aimant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060162821A1 (en) * 2002-11-28 2006-07-27 Reppel Georg W Method for the production of an anisotropic magnetic powder and a bonded anisotropic magnet produced therefrom
CN1901105A (zh) * 2005-07-18 2007-01-24 漯河市三鑫稀土永磁材料有限责任公司 高耐温性hddr钕铁硼各向异性磁粉及其制备方法
JP2011184730A (ja) * 2010-03-08 2011-09-22 Tdk Corp 希土類合金粉末の製造方法及び永久磁石
JP2011190482A (ja) * 2010-03-12 2011-09-29 Tdk Corp 希土類合金粉末の製造方法および永久磁石
WO2012072989A1 (fr) * 2010-12-02 2012-06-07 The University Of Birmingham Recyclage d'aimant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8088798B2 (en) 2006-03-10 2012-01-03 Jensen Discovery, Inc. Cannabinoid receptor antagonists/inverse agonists useful for treating obesity
CN103426624A (zh) * 2013-08-14 2013-12-04 林建强 钕铁硼永磁体的制备方法

Also Published As

Publication number Publication date
BR112013030793A2 (pt) 2016-12-06

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