JP2011114149A - 焼結希土類磁石の製造方法 - Google Patents
焼結希土類磁石の製造方法 Download PDFInfo
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- H—ELECTRICITY
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- 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
- H01F1/10—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
- H01F1/11—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
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- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
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- 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
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- 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
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- 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
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- 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
- H01F1/06—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 in the form of particles, e.g. powder
- H01F1/061—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 in the form of particles, e.g. powder with a protective layer
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- 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
- H01F1/06—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 in the form of particles, e.g. powder
- H01F1/08—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 in the form of particles, e.g. powder pressed, sintered, or bound together
- H01F1/086—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 in the form of particles, e.g. powder pressed, sintered, or bound together sintered
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- 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
- H01F41/0266—Moulding; Pressing
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- 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
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- 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
- H01F1/058—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IVa elements, e.g. Gd2Fe14C
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Abstract
【解決手段】希土類磁石組成の合金溶湯の急冷凝固により作製した平均結晶粒径10〜200nmの薄片状の多結晶相と、該多結晶相の表面に形成され、該多結晶相より融点が低い低融点相とから成る原料を焼結することを特徴とする焼結希土類磁石の製造方法。
【選択図】図4
Description
本発明の製造方法は、適用対象とする焼結希土類磁石の組成を限定する必要はない。適用対象の一つの代表例は、下記のように表される。
R:Yを含む希土類元素の少なくとも1種
H:DyおよびTbの重希土類元素の少なくとも1種
M:Ga、Zn、Si、Al、Nb、Zr、Ni、Cu、Cr、Hf、Mo、P、CおよびMgの少なくとも1種
13≦a≦20
0≦b≦4
c=100−a−b−d−e−f
0≦d≦30
4≦e≦20
0≦f≦3
本発明の焼結希土類磁石は、上記各元素を意図した合金成分として含み、それ以外に原料および製造工程から不可避的に混入する不可避的不純物を含む。不可避的不純物は本発明の焼結希土類磁石の特性および製造過程に実質的に影響を及ぼさないようにできるだけ含有量を少なくすることが望ましい。
粒界相: (RH)(FeCo)4B4相、RH相
<急冷凝固>
本発明においては、急冷凝固を下記のように行なう。
低融点相は、多結晶相よりも低融点であり、焼結希土類磁石の特性に悪影響を及ぼさない材質であればよい。
急冷凝固を行なう方法として、単ロール法および双ロール法があるが、急冷リボンの表面に低融点相を形成するには、単ロール法を行なう必要がある。これは、急冷過程で急冷リボンのロール接触面からフリー面へ向けて凝固が進行し、最終凝固位置となるフリー面が最も低融点の組成となる偏析を利用するものである。実施例において更に詳細に説明する。
急冷凝固によって作製した急冷リボンの片面または両面に、電解析出、スパッタリング、コールドスプレー、化学還元法などによって、低融点相を形成することができる。電解析出法について、実施例において詳細に説明する。
本発明により単ロール法で急冷リボンを作成した。また、比較のために双ロール法で急冷リボンを作製した。単ロール法および双ロール法の詳細を説明する。
実施例1と同様にして、単ロール法で組成Nd15Fe77B8の急冷リボンを作製し、その表面に図5の電解析出装置を用い低融点相AlDy合金を形成した。
DyCl3 0.02mol/L
図5に示すように、極低酸素下で電解析出装置の作用電極Wに急冷リボンNd15Fe77B8を設置した。
Claims (4)
- 希土類磁石組成の合金溶湯の急冷凝固により作製した平均結晶粒径10〜200nmの多結晶相の薄片と、該薄片の表面に形成され、該多結晶相より融点が低い低融点相とから成る原料を焼結することを特徴とする焼結希土類磁石の製造方法。
- 請求項1において、前記急冷凝固を単ロール法によって行い、前記薄片の、該単ロールに接触する面とは反対側の面に前記低融点相を形成することを特徴とする焼結希土類磁石の製造方法。
- 請求項1において、前記低融点相を電析法によって前記薄片の片面または両面に形成することを特徴とする焼結希土類磁石の製造方法。
- 請求項3において、有機溶媒またはイオン性液体を電解液として前記電析法を行うことを特徴とする焼結希土類磁石の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2009268943A JP5093215B2 (ja) | 2009-11-26 | 2009-11-26 | 焼結希土類磁石の製造方法 |
US13/511,465 US9640305B2 (en) | 2009-11-26 | 2010-11-18 | Method for producing sintered rare-earth magnet, sintered rare-earth magnet, and material for same |
PCT/IB2010/002934 WO2011064636A1 (en) | 2009-11-26 | 2010-11-18 | Method for producing sintered rare-earth magnet, sintered rare-earth magnet, and material for same |
DE112010004576.3T DE112010004576B4 (de) | 2009-11-26 | 2010-11-18 | Verfahren zur Herstellung eines gesinterten Seltenerdmagneten, Seltenerdmagnet und Material dafür |
CN201080053280.2A CN102741955B (zh) | 2009-11-26 | 2010-11-18 | 制造烧结稀土磁体的方法、烧结稀土磁体及其材料 |
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JP2009268943A JP5093215B2 (ja) | 2009-11-26 | 2009-11-26 | 焼結希土類磁石の製造方法 |
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JP2011114149A true JP2011114149A (ja) | 2011-06-09 |
JP5093215B2 JP5093215B2 (ja) | 2012-12-12 |
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JP2009268943A Expired - Fee Related JP5093215B2 (ja) | 2009-11-26 | 2009-11-26 | 焼結希土類磁石の製造方法 |
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US (1) | US9640305B2 (ja) |
JP (1) | JP5093215B2 (ja) |
CN (1) | CN102741955B (ja) |
DE (1) | DE112010004576B4 (ja) |
WO (1) | WO2011064636A1 (ja) |
Cited By (8)
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JP2011159733A (ja) * | 2010-01-29 | 2011-08-18 | Toyota Motor Corp | ナノコンポジット磁石の製造方法 |
JP2013098319A (ja) * | 2011-10-31 | 2013-05-20 | Toyota Motor Corp | Nd−Fe−B系磁石の製造方法 |
WO2014034849A1 (ja) * | 2012-08-31 | 2014-03-06 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
WO2014034851A1 (ja) * | 2012-08-31 | 2014-03-06 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
WO2014034854A1 (ja) * | 2012-08-31 | 2014-03-06 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
JP2015154051A (ja) * | 2014-02-19 | 2015-08-24 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
US10017871B2 (en) | 2014-02-19 | 2018-07-10 | Shin-Etsu Chemical Co., Ltd. | Electrodepositing apparatus and preparation of rare earth permanent magnet |
JP2018528603A (ja) * | 2015-07-06 | 2018-09-27 | ダイソン・テクノロジー・リミテッド | マグネット |
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JP5640946B2 (ja) * | 2011-10-11 | 2014-12-17 | トヨタ自動車株式会社 | 希土類磁石前駆体である焼結体の製造方法 |
DE102013004985A1 (de) * | 2012-11-14 | 2014-05-15 | Volkswagen Aktiengesellschaft | Verfahren zur Herstellung eines Permanentmagneten sowie Permanentmagnet |
DE102013202254A1 (de) * | 2013-02-12 | 2014-08-14 | Siemens Aktiengesellschaft | Verfahren zur Herstellung von Hochenergiemagneten |
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DE102014215873A1 (de) * | 2014-08-11 | 2016-02-11 | Siemens Aktiengesellschaft | Elektrochemische Abscheidung eines schweren Seltenerdmaterials zur Vergrößerung der Koerzitivfeldstärke von Seltenerddauermagneten |
DE102014218369A1 (de) * | 2014-09-12 | 2016-03-31 | Siemens Aktiengesellschaft | Elektrochemische Abscheidung von Neodym zur Vergrößerung der Koerzitivfeldstärke von Seltenerddauermagneten |
CN105648487A (zh) * | 2014-12-03 | 2016-06-08 | 北京中科三环高技术股份有限公司 | 电沉积方法、电沉积液和电沉积制备稀土永磁材料的方法 |
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Cited By (16)
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JP2011159733A (ja) * | 2010-01-29 | 2011-08-18 | Toyota Motor Corp | ナノコンポジット磁石の製造方法 |
JP2013098319A (ja) * | 2011-10-31 | 2013-05-20 | Toyota Motor Corp | Nd−Fe−B系磁石の製造方法 |
US10138564B2 (en) | 2012-08-31 | 2018-11-27 | Shin-Etsu Chemical Co., Ltd. | Production method for rare earth permanent magnet |
WO2014034849A1 (ja) * | 2012-08-31 | 2014-03-06 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
WO2014034854A1 (ja) * | 2012-08-31 | 2014-03-06 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
JP2014063996A (ja) * | 2012-08-31 | 2014-04-10 | Shin Etsu Chem Co Ltd | 希土類永久磁石の製造方法 |
JP2014063997A (ja) * | 2012-08-31 | 2014-04-10 | Shin Etsu Chem Co Ltd | 希土類永久磁石の製造方法 |
JP2014063998A (ja) * | 2012-08-31 | 2014-04-10 | Shin Etsu Chem Co Ltd | 希土類永久磁石の製造方法 |
US10181377B2 (en) | 2012-08-31 | 2019-01-15 | Shin-Etsu Chemical Co., Ltd. | Production method for rare earth permanent magnet |
US10179955B2 (en) | 2012-08-31 | 2019-01-15 | Shin-Etsu Chemical Co., Ltd. | Production method for rare earth permanent magnet |
WO2014034851A1 (ja) * | 2012-08-31 | 2014-03-06 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
US10017871B2 (en) | 2014-02-19 | 2018-07-10 | Shin-Etsu Chemical Co., Ltd. | Electrodepositing apparatus and preparation of rare earth permanent magnet |
US9845545B2 (en) | 2014-02-19 | 2017-12-19 | Shin-Etsu Chemical Co., Ltd. | Preparation of rare earth permanent magnet |
JP2015154051A (ja) * | 2014-02-19 | 2015-08-24 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
US10526715B2 (en) | 2014-02-19 | 2020-01-07 | Shin-Etsu Chemical Co., Ltd. | Preparation of rare earth permanent magnet |
JP2018528603A (ja) * | 2015-07-06 | 2018-09-27 | ダイソン・テクノロジー・リミテッド | マグネット |
Also Published As
Publication number | Publication date |
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DE112010004576B4 (de) | 2023-01-26 |
WO2011064636A1 (en) | 2011-06-03 |
JP5093215B2 (ja) | 2012-12-12 |
CN102741955B (zh) | 2015-07-15 |
CN102741955A (zh) | 2012-10-17 |
US20130092867A1 (en) | 2013-04-18 |
DE112010004576T5 (de) | 2012-12-13 |
US9640305B2 (en) | 2017-05-02 |
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