JP5640954B2 - 希土類磁石の製造方法 - Google Patents
希土類磁石の製造方法 Download PDFInfo
- Publication number
- JP5640954B2 JP5640954B2 JP2011248923A JP2011248923A JP5640954B2 JP 5640954 B2 JP5640954 B2 JP 5640954B2 JP 2011248923 A JP2011248923 A JP 2011248923A JP 2011248923 A JP2011248923 A JP 2011248923A JP 5640954 B2 JP5640954 B2 JP 5640954B2
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- rare earth
- earth magnet
- grain boundary
- boundary phase
- 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
Links
Images
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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/11—Making amorphous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
-
- 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
-
- 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
- B22F1/07—Metallic powder characterised by particles having a nanoscale microstructure
-
- 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
-
- 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
Description
図1a、b、cはその順で本発明の希土類磁石の製造方法の第1のステップを説明した模式図であり、図3aは本発明の希土類磁石の製造方法の第2のステップを説明した図である。また、図2aは図1bで示す焼結体のミクロ構造を説明した図であり、図2bは図1cの成形体のミクロ構造を説明した図である。さらに、図3bは改質合金による組織の改質途中の希土類磁石のミクロ構造を説明した図であり、図3cは改質合金によって組織の改質が完了した希土類磁石のミクロ構造を説明した図である。
本発明者等は、上記する本発明の製造方法を適用してナノ結晶磁石である希土類磁石を製作し、さらに、粒界相内に浸透させる改質合金として本発明のものとは異なる従来の改質合金を使用して同様に希土類磁石を製作し、各試験体の改質合金拡散前後の磁化と保磁力を測定し、それぞれを比較する実験をおこなった。
Claims (3)
- ナノ結晶組織で結晶粒径が50nm〜300nmの範囲にあるRE-Fe-B系の主相(RE:Nd、Prの少なくとも一種)と、該主相の周りにあるRE-X合金(X:金属元素)の粒界相からなる焼結体に対し、異方性を与える熱間塑性加工を施して成形体を製造する第1のステップ、
前記成形体の保磁力を高めるRE-Y-Z合金(Y:遷移金属元素、Z:重希土類元素)と前記粒界相をともに溶融させ、RE-Y-Z合金の融液を成形体の表面から液相浸透させて希土類磁石を製造する第2のステップからなる希土類磁石の製造方法。 - RE-Y-Z合金としてNd-Cu-Dy合金もしくはNd-Cu-Tb合金を使用する請求項1に記載の希土類磁石の製造方法。
- 前記第2のステップにおいて、RE-Y-Z合金の融液を550℃〜650℃の温度で液相浸透させる請求項1または2に記載の希土類磁石の製造方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011248923A JP5640954B2 (ja) | 2011-11-14 | 2011-11-14 | 希土類磁石の製造方法 |
CN201280055397.3A CN103946931A (zh) | 2011-11-14 | 2012-11-07 | 稀土磁体制造方法 |
PCT/IB2012/002248 WO2013072728A1 (en) | 2011-11-14 | 2012-11-07 | Method of manufacturing rare-earth magnets |
US14/355,389 US20140308441A1 (en) | 2011-11-14 | 2012-11-07 | Method of manufacturing rare-earth magnets |
KR1020147012659A KR101548274B1 (ko) | 2011-11-14 | 2012-11-07 | 희토류 자석의 제조방법 |
DE112012004741.9T DE112012004741T5 (de) | 2011-11-14 | 2012-11-07 | Herstellungsverfahren von Seltenerdmagneten |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011248923A JP5640954B2 (ja) | 2011-11-14 | 2011-11-14 | 希土類磁石の製造方法 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2013105903A JP2013105903A (ja) | 2013-05-30 |
JP2013105903A5 JP2013105903A5 (ja) | 2013-12-12 |
JP5640954B2 true JP5640954B2 (ja) | 2014-12-17 |
Family
ID=47222154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011248923A Active JP5640954B2 (ja) | 2011-11-14 | 2011-11-14 | 希土類磁石の製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20140308441A1 (ja) |
JP (1) | JP5640954B2 (ja) |
KR (1) | KR101548274B1 (ja) |
CN (1) | CN103946931A (ja) |
DE (1) | DE112012004741T5 (ja) |
WO (1) | WO2013072728A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101542539B1 (ko) | 2011-11-14 | 2015-08-06 | 도요타 지도샤(주) | 희토류 자석과 그 제조 방법 |
JP5790617B2 (ja) | 2012-10-18 | 2015-10-07 | トヨタ自動車株式会社 | 希土類磁石の製造方法 |
US10468165B2 (en) | 2013-06-05 | 2019-11-05 | Toyota Jidosha Kabushiki Kaisha | Rare-earth magnet and method for manufacturing same |
JP5915637B2 (ja) | 2013-12-19 | 2016-05-11 | トヨタ自動車株式会社 | 希土類磁石の製造方法 |
JP5924335B2 (ja) | 2013-12-26 | 2016-05-25 | トヨタ自動車株式会社 | 希土類磁石とその製造方法 |
JP5983598B2 (ja) * | 2013-12-27 | 2016-08-31 | トヨタ自動車株式会社 | 希土類磁石の製造方法 |
JP6003920B2 (ja) * | 2014-02-12 | 2016-10-05 | トヨタ自動車株式会社 | 希土類磁石の製造方法 |
EP3136407B1 (en) * | 2014-04-25 | 2018-10-17 | Hitachi Metals, Ltd. | Method for producing r-t-b sintered magnet |
CN107077935A (zh) * | 2014-12-08 | 2017-08-18 | Lg电子株式会社 | 包含非磁性合金的热压变形的磁体及其制造方法 |
DE102015015930A1 (de) * | 2015-12-09 | 2017-06-14 | Wolfgang Kochanek | Verfahren zur Herstellung magnetischer Werkstoffe |
JP6717230B2 (ja) * | 2017-02-28 | 2020-07-01 | 日立金属株式会社 | R−t−b系焼結磁石の製造方法 |
JP6717231B2 (ja) * | 2017-02-28 | 2020-07-01 | 日立金属株式会社 | R−t−b系焼結磁石の製造方法 |
DE102018105250A1 (de) * | 2018-03-07 | 2019-09-12 | Technische Universität Darmstadt | Verfahren zur Herstellung eines Permanentmagnets oder eines hartmagnetischen Materials |
KR102561239B1 (ko) * | 2018-11-27 | 2023-07-31 | 엘지이노텍 주식회사 | 희토류 자석 제조방법 |
JP7216957B2 (ja) * | 2019-02-14 | 2023-02-02 | 大同特殊鋼株式会社 | 希土類磁石の製造方法 |
JP2021082622A (ja) * | 2019-11-14 | 2021-05-27 | 大同特殊鋼株式会社 | 希土類磁石および希土類磁石の製造方法 |
CN113871122A (zh) * | 2021-09-24 | 2021-12-31 | 烟台东星磁性材料股份有限公司 | 低重稀土磁体及制造方法 |
CN113871121A (zh) * | 2021-09-24 | 2021-12-31 | 烟台东星磁性材料股份有限公司 | 耐高温磁体及其制造方法 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4792367A (en) * | 1983-08-04 | 1988-12-20 | General Motors Corporation | Iron-rare earth-boron permanent |
JP3135120B2 (ja) * | 1989-02-09 | 2001-02-13 | 日立金属株式会社 | 温間加工磁石の製造方法 |
JP3405806B2 (ja) * | 1994-04-05 | 2003-05-12 | ティーディーケイ株式会社 | 磁石およびその製造方法 |
JPH08250356A (ja) * | 1995-03-13 | 1996-09-27 | Daido Steel Co Ltd | 異方性磁石用合金粉末、これを用いた異方性永久磁石とその製造方法 |
JP3540438B2 (ja) * | 1995-05-16 | 2004-07-07 | Tdk株式会社 | 磁石およびその製造方法 |
JPH09275004A (ja) * | 1995-07-07 | 1997-10-21 | Daido Steel Co Ltd | 永久磁石とその製造方法 |
JP3897724B2 (ja) * | 2003-03-31 | 2007-03-28 | 独立行政法人科学技術振興機構 | 超小型製品用の微小、高性能焼結希土類磁石の製造方法 |
JP4433282B2 (ja) * | 2004-01-23 | 2010-03-17 | Tdk株式会社 | 希土類磁石の製造方法及び製造装置 |
CN100433204C (zh) * | 2004-07-28 | 2008-11-12 | 株式会社日立制作所 | 稀土类磁铁 |
JP4654709B2 (ja) * | 2004-07-28 | 2011-03-23 | 株式会社日立製作所 | 希土類磁石 |
CN101006534B (zh) * | 2005-04-15 | 2011-04-27 | 日立金属株式会社 | 稀土类烧结磁铁及其制造方法 |
JP4656323B2 (ja) * | 2006-04-14 | 2011-03-23 | 信越化学工業株式会社 | 希土類永久磁石材料の製造方法 |
JP2010263172A (ja) * | 2008-07-04 | 2010-11-18 | Daido Steel Co Ltd | 希土類磁石およびその製造方法 |
JP2010114200A (ja) * | 2008-11-05 | 2010-05-20 | Daido Steel Co Ltd | 希土類磁石の製造方法 |
JP5057111B2 (ja) * | 2009-07-01 | 2012-10-24 | 信越化学工業株式会社 | 希土類磁石の製造方法 |
JP2011035001A (ja) | 2009-07-29 | 2011-02-17 | Ulvac Japan Ltd | 永久磁石の製造方法 |
JP5515539B2 (ja) * | 2009-09-09 | 2014-06-11 | 日産自動車株式会社 | 磁石成形体およびその製造方法 |
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 |
US8846136B2 (en) * | 2010-09-15 | 2014-09-30 | Toyota Jidosha Kabushiki Kaisha | Production method of rare earth magnet |
-
2011
- 2011-11-14 JP JP2011248923A patent/JP5640954B2/ja active Active
-
2012
- 2012-11-07 DE DE112012004741.9T patent/DE112012004741T5/de not_active Withdrawn
- 2012-11-07 US US14/355,389 patent/US20140308441A1/en not_active Abandoned
- 2012-11-07 WO PCT/IB2012/002248 patent/WO2013072728A1/en active Application Filing
- 2012-11-07 KR KR1020147012659A patent/KR101548274B1/ko active IP Right Grant
- 2012-11-07 CN CN201280055397.3A patent/CN103946931A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
CN103946931A (zh) | 2014-07-23 |
KR101548274B1 (ko) | 2015-08-28 |
US20140308441A1 (en) | 2014-10-16 |
WO2013072728A1 (en) | 2013-05-23 |
JP2013105903A (ja) | 2013-05-30 |
WO2013072728A8 (en) | 2013-07-25 |
DE112012004741T5 (de) | 2014-07-31 |
KR20140089544A (ko) | 2014-07-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5640954B2 (ja) | 希土類磁石の製造方法 | |
JP5742813B2 (ja) | 希土類磁石の製造方法 | |
JP5725200B2 (ja) | 希土類磁石 | |
US10056177B2 (en) | Method for producing rare-earth magnet | |
JP5870914B2 (ja) | 希土類磁石の製造方法 | |
KR101809860B1 (ko) | 희토류 자석의 제조 방법 | |
JPWO2014196605A1 (ja) | 希土類磁石とその製造方法 | |
JP5751237B2 (ja) | 希土類磁石とその製造方法 | |
EP3087574B1 (en) | Method of manufacturing rare earth magnet | |
JP5691989B2 (ja) | 希土類磁石前駆体の焼結体を形成する磁性粉体の製造方法 | |
CN108335814A (zh) | 稀土磁体及其制造方法 | |
JP2013149862A (ja) | 希土類磁石の製造方法 | |
WO2013054779A1 (ja) | 希土類磁石前駆体の焼結体とこれを形成する磁性粉末の製造方法 | |
JP2013197414A (ja) | 焼結体とその製造方法 | |
JP5742733B2 (ja) | 希土類磁石の製造方法 | |
JP6003452B2 (ja) | 希土類磁石の製造方法 | |
JP2013157345A (ja) | 希土類磁石の製造方法 | |
JP2016076614A (ja) | 希土類磁石の製造方法 | |
JP2016127114A (ja) | 希土類磁石の磁気性能の特定方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20131025 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20131025 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20140225 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20140304 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20140930 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20141013 |
|
R151 | Written notification of patent or utility model registration |
Ref document number: 5640954 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |