FR3030866B1 - Aimant permanent fritte - Google Patents

Aimant permanent fritte Download PDF

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Publication number
FR3030866B1
FR3030866B1 FR1462819A FR1462819A FR3030866B1 FR 3030866 B1 FR3030866 B1 FR 3030866B1 FR 1462819 A FR1462819 A FR 1462819A FR 1462819 A FR1462819 A FR 1462819A FR 3030866 B1 FR3030866 B1 FR 3030866B1
Authority
FR
France
Prior art keywords
phase
rare earth
particles
additive
powder
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
FR1462819A
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English (en)
Other versions
FR3030866A1 (fr
Inventor
Florence Servant
Cyril Rado
Fernand Vial
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.)
Vial Consulting
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Vial Consulting
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.)
Filing date
Publication date
Application filed by Vial Consulting, Commissariat a lEnergie Atomique CEA, Commissariat a lEnergie Atomique et aux Energies Alternatives CEA filed Critical Vial Consulting
Priority to FR1462819A priority Critical patent/FR3030866B1/fr
Priority to PCT/EP2015/080640 priority patent/WO2016097366A1/fr
Publication of FR3030866A1 publication Critical patent/FR3030866A1/fr
Application granted granted Critical
Publication of FR3030866B1 publication Critical patent/FR3030866B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0293—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets
    • 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
    • H01F1/0577—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 sintered

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

Procédé de fabrication d'un aimant comportant les étapes suivantes : a) préparation d'une poudre de base (a) : a1) fabrication d'un alliage fondu présentant une phase magnétique T1 de type R2M14B et une phase riche en une terre rare R, ladite charge initiale comportant : - entre 28% et 33% de ladite terre rare R, avec Nd > 20%, - complément à 100% : élément métallique M choisi dans le groupe constitué par Fe, Co, Ni et leurs mélanges, avec Ni + Co < 5%, - entre 0,95% et 1,2% de Bore B, - moins de 1% de polluants, avec O < 1000 ppm, a2) hydruration ; a3) de préférence, déshydruration ; les étapes a2) et a3) conduisant à transformer ladite phase riche en ladite terre rare R en une phase à bas point de fusion T2, a4) broyage de manière à obtenir une poudre de base présentant une taille médiane comprise entre 1 µm et 7 µm ; b) préparation d'une poudre d'additif (b) comportant - plus de 5% de particules d'un fluorure de terre rare lourde R' de type R'F3, - plus de 5% de particules de fluorure de calcium CaF2 et/ou de particules de fluorure de lithium LiF, c) préparation d'une charge de départ par mélange desdites poudres (a) et (b) et d'additif ; d) mise en forme et orientation magnétique ; e) frittage à une température supérieure à la température de fusion de la phase T2 et à la température de fusion de la poudre d'additif ; f) aimantation.
FR1462819A 2014-12-18 2014-12-18 Aimant permanent fritte Active FR3030866B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR1462819A FR3030866B1 (fr) 2014-12-18 2014-12-18 Aimant permanent fritte
PCT/EP2015/080640 WO2016097366A1 (fr) 2014-12-18 2015-12-18 Aimant permanent fritte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1462819A FR3030866B1 (fr) 2014-12-18 2014-12-18 Aimant permanent fritte

Publications (2)

Publication Number Publication Date
FR3030866A1 FR3030866A1 (fr) 2016-06-24
FR3030866B1 true FR3030866B1 (fr) 2021-03-12

Family

ID=53491562

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1462819A Active FR3030866B1 (fr) 2014-12-18 2014-12-18 Aimant permanent fritte

Country Status (2)

Country Link
FR (1) FR3030866B1 (fr)
WO (1) WO2016097366A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110364352A (zh) * 2019-08-06 2019-10-22 宁德市星宇科技有限公司 一种钕铁硼永磁材料的制备方法
CN111613408B (zh) * 2020-06-03 2022-05-10 福建省长汀金龙稀土有限公司 一种r-t-b系永磁材料、原料组合物及其制备方法和应用

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566758B1 (fr) 1984-06-29 1990-01-12 Centre Nat Rech Scient Nouveaux hydrures de terre rare/fer/bore et terre rare/cobalt/bore magnetiques, leur procede de fabrication et de fabrication des produits deshydrures pulverulents correspondants, leurs applications
JPH07105289B2 (ja) 1986-03-06 1995-11-13 信越化学工業株式会社 希土類永久磁石の製造方法
FR2664086A1 (fr) 1990-07-02 1992-01-03 Centre Nat Rech Scient Procede perfectionne pour l'optimisation des proprietes magnetiques de materiaux magnetiques pulverulents et produits ainsi obtenus.
JP3231034B1 (ja) 2000-05-09 2001-11-19 住友特殊金属株式会社 希土類磁石およびその製造方法
US6527874B2 (en) 2000-07-10 2003-03-04 Sumitomo Special Metals Co., Ltd. Rare earth magnet and method for making same
JP4747562B2 (ja) * 2004-06-25 2011-08-17 株式会社日立製作所 希土類磁石及びその製造方法、並びに磁石モータ
BRPI0506147B1 (pt) 2004-10-19 2020-10-13 Shin-Etsu Chemical Co., Ltd método para preparar um material de ímã permanente de terra rara
JP2007116088A (ja) * 2005-09-26 2007-05-10 Hitachi Ltd 磁性材料，磁石及び回転機
JP4415980B2 (ja) * 2006-08-30 2010-02-17 株式会社日立製作所 高抵抗磁石およびそれを用いたモータ
US20110057756A1 (en) * 2009-09-04 2011-03-10 Electron Energy Corporation Rare Earth Composite Magnets with Increased Resistivity

Also Published As

Publication number Publication date
WO2016097366A1 (fr) 2016-06-23
FR3030866A1 (fr) 2016-06-24

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