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1. WO2011125589 - PERMANENT MAGNET AND MANUFACTURING METHOD FOR PERMANENT MAGNET

Publication Number WO/2011/125589
Publication Date 13.10.2011
International Application No. PCT/JP2011/057570
International Filing Date 28.03.2011
IPC
H01F 41/02 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
41Apparatus 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
02for manufacturing cores, coils or magnets
B22F 1/02 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
02comprising coating of the powder
B22F 3/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
C22C 38/00 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
H01F 1/053 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01of inorganic materials
03characterised by their coercivity
032of hard-magnetic materials
04metals or alloys
047Alloys characterised by their composition
053containing rare earth metals
H01F 1/08 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01of inorganic materials
03characterised by their coercivity
032of hard-magnetic materials
04metals or alloys
06in the form of particles, e.g. powder
08pressed, sintered, or bound together
CPC
B22F 1/16
B22F 2998/10
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
2998Supplementary information concerning processes or compositions relating to powder metallurgy
10Processes characterised by the sequence of their steps
B22F 2999/00
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
2999Aspects linked to processes or compositions used in powder metallurgy
B22F 3/14
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
12Both compacting and sintering
14simultaneously
C22C 33/02
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
33Making ferrous alloys
02by powder metallurgy
C22C 33/0278
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
33Making ferrous alloys
02by powder metallurgy
0257characterised by the range of the alloying elements
0278with at least one alloying element having a minimum content above 5%
Applicants
  • 日東電工株式会社 NITTO DENKO CORPORATION [JP]/[JP] (AllExceptUS)
  • 尾関 出光 OZEKI Izumi [JP]/[JP] (UsOnly)
  • 久米 克也 KUME Katsuya [JP]/[JP] (UsOnly)
  • 平野 敬祐 HIRANO Keisuke [JP]/[JP] (UsOnly)
  • 大牟礼 智弘 OMURE Tomohiro [JP]/[JP] (UsOnly)
  • 太白 啓介 TAIHAKU Keisuke [JP]/[JP] (UsOnly)
  • 尾崎 孝志 OZAKI Takashi [JP]/[JP] (UsOnly)
Inventors
  • 尾関 出光 OZEKI Izumi
  • 久米 克也 KUME Katsuya
  • 平野 敬祐 HIRANO Keisuke
  • 大牟礼 智弘 OMURE Tomohiro
  • 太白 啓介 TAIHAKU Keisuke
  • 尾崎 孝志 OZAKI Takashi
Agents
  • 特許業務法人ネクスト NEXT INTERNATIONAL
Priority Data
2010-08196331.03.2010JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) PERMANENT MAGNET AND MANUFACTURING METHOD FOR PERMANENT MAGNET
(FR) AIMANT PERMANENT ET SON PROCÉDÉ DE FABRICATION
(JA) 永久磁石及び永久磁石の製造方法
Abstract
(EN) Disclosed are a permanent magnet and a manufacturing method for the permanent magnet in which V, Mo, Zr, Ta, Ti, W, or Nb contained in an organometallic compound can be segregated to the grain boundaries of a magnet. An organometallic compound solution, to which an organometallic compound represented by the formula M-(OR)x has been added, is added to a fine powder of a pulverized neodymium magnet, and the organometallic compound is uniformly deposited on the surface of the neodymium magnet grains. Afterwards, calcination in hydrogen is carried out by retaining a molded article, formed by powder compacting, in a hydrogen atmosphere for several hours at 200℃-900℃. Afterwards, a permanent magnet is manufactured by sintering. (In the formula, M is V, Mo, Zr, Ta, Ti, W, or Nb. R is a substituent group comprising a hydrocarbon, and can be a straight chain or a branched chain. x is an arbitrary integer.)
(FR) L'invention concerne un aimant permanent et un procédé de fabrication de cet aimant permanent au cours duquel V, Mo, Zr, Ta, Ti, W, ou Nb contenus dans un composé organométallique peuvent être séparés efficacement des joints de grains d'un aimant. Une solution de composé organométallique, à laquelle a été ajouté un composé organométallique représenté par la formule M-(OR)x, est ajoutée à une poudre fine d'un aimant de néodyme pulvérisé, et le composé organométallique est déposé uniformément sur la surface des grains de l'aimant de néodyme. Ensuite, la calcination dans l'hydrogène s'effectue en retenant un article moulé, obtenu par pressage de la poudre, dans une atmosphère d'hydrogène pendant plusieurs heures à une température comprise entre 200 °C et 900 °C. Puis, un aimant permanent est obtenu par frittage. (Dans la formule, M représente V, Mo, Zr, Ta, Ti, W, ou Nb. R est un groupe substituant comprenant un hydrocarbure, et peut être une chaîne droite ou une chaîne ramifiée. x représente un nombre entier arbitraire).
(JA)  有機金属化合物に含まれるV、Mo、Zr、Ta、Ti、W又はNbを磁石の粒界に対して偏在配置することが可能な永久磁石及び永久磁石の製造方法を提供する。 粉砕されたネオジム磁石の微粉末に対して、M-(OR)(式中、MはV、Mo、Zr、Ta、Ti、W又はNbである。Rは炭化水素からなる置換基であり、直鎖でも分枝でも良い。xは任意の整数である。)で示される有機金属化合物が添加された有機金属化合物溶液を加え、ネオジム磁石の粒子表面に、均一に有機金属化合物を付着させる。その後、圧粉成形した成形体を水素雰囲気において200℃~900℃で数時間保持することにより水素中仮焼処理を行う。その後、焼成を行うことによって永久磁石を製造する。
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