FR3069096B1 - Procede de fabrication d'un aimant permanent - Google Patents

Procede de fabrication d'un aimant permanent Download PDF

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Publication number
FR3069096B1
FR3069096B1 FR1756646A FR1756646A FR3069096B1 FR 3069096 B1 FR3069096 B1 FR 3069096B1 FR 1756646 A FR1756646 A FR 1756646A FR 1756646 A FR1756646 A FR 1756646A FR 3069096 B1 FR3069096 B1 FR 3069096B1
Authority
FR
France
Prior art keywords
permanent magnet
particles
manufacturing
magnetic material
temperature
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.)
Active
Application number
FR1756646A
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English (en)
Other versions
FR3069096A1 (fr
Inventor
Luc Aixala
Cyril Rado
Florence Servant
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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.)
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Publication date
Application filed by Commissariat a lEnergie Atomique CEA, Commissariat a lEnergie Atomique et aux Energies Alternatives CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR1756646A priority Critical patent/FR3069096B1/fr
Publication of FR3069096A1 publication Critical patent/FR3069096A1/fr
Application granted granted Critical
Publication of FR3069096B1 publication Critical patent/FR3069096B1/fr
Active 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
    • H01F1/0551—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0552—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes with a protective layer
    • 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
    • B22F1/17—Metallic particles coated with metal
    • 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
    • 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
    • B22F2207/00—Aspects of the compositions, gradients
    • B22F2207/01—Composition gradients
    • B22F2207/07—Particles with core-rim gradient
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties
    • C22C2202/02—Magnetic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

Procédé de fabrication d'un aimant permanent comprenant au moins les étapes successives suivantes : a) Préparation d'une pièce comprenant des particules (1) et un liant organique ou un lubrifiant, b) Réalisation d'un premier traitement thermique à une première température Td de manière à éliminer le liant organique ou le lubrifiant, c) Réalisation d'un second traitement thermique à une deuxième température Tf, supérieure à la première température Td, de manière à fritter les particules pour obtenir l'aimant permanent, les particules (1) comprenant un cœur (2) recouvert par un revêtement métallique (3), le cœur (2) étant en un matériau magnétique à base de terres rares, tel que NdFeB, ou SmCo, ou en un matériau non magnétique à base de terres rares susceptible de former un matériau magnétique par réaction avec le revêtement métallique (3) lors de l'étape de c).
FR1756646A 2017-07-12 2017-07-12 Procede de fabrication d'un aimant permanent Active FR3069096B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1756646A FR3069096B1 (fr) 2017-07-12 2017-07-12 Procede de fabrication d'un aimant permanent

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1756646A FR3069096B1 (fr) 2017-07-12 2017-07-12 Procede de fabrication d'un aimant permanent
FR1756646 2017-07-12

Publications (2)

Publication Number Publication Date
FR3069096A1 FR3069096A1 (fr) 2019-01-18
FR3069096B1 true FR3069096B1 (fr) 2020-12-25

Family

ID=60382308

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1756646A Active FR3069096B1 (fr) 2017-07-12 2017-07-12 Procede de fabrication d'un aimant permanent

Country Status (1)

Country Link
FR (1) FR3069096B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4066963A1 (fr) * 2021-03-29 2022-10-05 Jozef Stefan Institute Procédé de formation d'un matériau de départ pour produire des aimants permanents aux terres rares à partir de matériaux recyclés et matériau de départ correspondant
FR3143394A1 (fr) * 2022-12-16 2024-06-21 Commissariat à l'Energie Atomique et aux Energies Alternatives Poudre d’alliage métallique protégée

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856580A (en) * 1973-06-22 1974-12-24 Gen Electric Air-stable magnetic materials and method
US3853640A (en) * 1973-06-22 1974-12-10 Gen Electric Lubricants for pressing transition metal-rare earth powder to be sintered
JPH0465804A (ja) * 1990-07-06 1992-03-02 Isuzu Ceramics Kenkyusho:Kk 永久磁石とその製造方法
WO2012159096A2 (fr) * 2011-05-18 2012-11-22 The Regents Of The University Of California Aimants permanents très puissants et nanostructurés
JP5908246B2 (ja) * 2011-09-30 2016-04-26 日東電工株式会社 希土類永久磁石の製造方法

Also Published As

Publication number Publication date
FR3069096A1 (fr) 2019-01-18

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