WO2009004794A1 - Ｒ－Ｆｅ－Ｂ系希土類焼結磁石およびその製造方法 - Google Patents

Ｒ－Ｆｅ－Ｂ系希土類焼結磁石およびその製造方法 Download PDF

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Publication number
WO2009004794A1
WO2009004794A1 PCT/JP2008/001727 JP2008001727W WO2009004794A1 WO 2009004794 A1 WO2009004794 A1 WO 2009004794A1 JP 2008001727 W JP2008001727 W JP 2008001727W WO 2009004794 A1 WO2009004794 A1 WO 2009004794A1
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WIPO (PCT)
Prior art keywords
rare earth
sintered magnet
production
same
earth sintered
Prior art date
Application number
PCT/JP2008/001727
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English (en)
French (fr)
Inventor
Koshi Yoshimura
Hideyuki Morimoto
Tomoori Odaka
Original Assignee
Hitachi Metals, Ltd.
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 Hitachi Metals, Ltd. filed Critical Hitachi Metals, Ltd.
Priority to BRPI0813821-4A priority Critical patent/BRPI0813821B1/pt
Priority to US12/666,323 priority patent/US8187392B2/en
Priority to KR1020097024737A priority patent/KR101495899B1/ko
Priority to EP08790126.0A priority patent/EP2169689B1/en
Priority to CN2008800110663A priority patent/CN101652821B/zh
Priority to JP2009521523A priority patent/JP5509850B2/ja
Publication of WO2009004794A1 publication Critical patent/WO2009004794A1/ja
Priority to US13/456,250 priority patent/US8945318B2/en

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    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • 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
    • 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
    • H01F1/06—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
    • 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
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/248—Thermal after-treatment
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • 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

Abstract

　本発明のＲ－Ｆｅ－Ｂ系希土類焼結磁石は、磁石体の表面から２０μｍ深さの位置の前記Ｒ2Ｆｅ14Ｂ型化合物結晶粒が、外郭部から厚さが１ｎｍ以上２μｍ以下の（ＲＬ1-xＲＨx）2Ｆｅ14Ｂ（０．２≦ｘ≦０．７５）層を有している。ここで、軽希土類元素ＲＬは、ＮｄおよびＰｒの少なくとも１種であり、重希土類元素ＲＨは、Ｄｙ、Ｈｏ、およびＴｂからなる群から選択された少なくとも１種である。
PCT/JP2008/001727 2007-07-02 2008-07-01 Ｒ－Ｆｅ－Ｂ系希土類焼結磁石およびその製造方法 WO2009004794A1 (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BRPI0813821-4A BRPI0813821B1 (pt) 2007-07-02 2008-07-01 IMÃ SINTERIZADO DE TERRAS-RARAS À BASE DE R-Fe-B, E MÉTODO PARA SUA PRODUÇÃO
US12/666,323 US8187392B2 (en) 2007-07-02 2008-07-01 R-Fe-B type rare earth sintered magnet and process for production of the same
KR1020097024737A KR101495899B1 (ko) 2007-07-02 2008-07-01 Ｒ­Ｆｅ­Ｂ계 희토류 소결 자석 및 그 제조 방법
EP08790126.0A EP2169689B1 (en) 2007-07-02 2008-07-01 R-fe-b type rare earth sintered magnet and process for production of the same
CN2008800110663A CN101652821B (zh) 2007-07-02 2008-07-01 R-Fe-B系稀土类烧结磁铁及其制造方法
JP2009521523A JP5509850B2 (ja) 2007-07-02 2008-07-01 Ｒ−Ｆｅ−Ｂ系希土類焼結磁石およびその製造方法
US13/456,250 US8945318B2 (en) 2007-07-02 2012-04-26 R-Fe-B type rare earth sintered magnet and process for production of the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007174063 2007-07-02
JP2007-174063 2007-07-02

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US12/666,323 A-371-Of-International US8187392B2 (en) 2007-07-02 2008-07-01 R-Fe-B type rare earth sintered magnet and process for production of the same
US13/456,250 Continuation US8945318B2 (en) 2007-07-02 2012-04-26 R-Fe-B type rare earth sintered magnet and process for production of the same

Publications (1)

Publication Number Publication Date
WO2009004794A1 true WO2009004794A1 (ja) 2009-01-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/001727 WO2009004794A1 (ja) 2007-07-02 2008-07-01 Ｒ－Ｆｅ－Ｂ系希土類焼結磁石およびその製造方法

Country Status (7)

Country Link
US (2) US8187392B2 (ja)
EP (1) EP2169689B1 (ja)
JP (1) JP5509850B2 (ja)
KR (1) KR101495899B1 (ja)
CN (1) CN101652821B (ja)
BR (1) BRPI0813821B1 (ja)
WO (1) WO2009004794A1 (ja)

Cited By (18)

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JP2010245392A (ja) * 2009-04-08 2010-10-28 Ulvac Japan Ltd ネオジウム鉄ボロン系の焼結磁石
WO2012002059A1 (ja) * 2010-06-29 2012-01-05 昭和電工株式会社 Ｒ－ｔ－ｂ系希土類永久磁石、モーター、自動車、発電機、風力発電装置
WO2012002060A1 (ja) * 2010-06-29 2012-01-05 昭和電工株式会社 Ｒ－ｔ－ｂ系希土類永久磁石、モーター、自動車、発電機、風力発電装置
JP2012156247A (ja) * 2011-01-25 2012-08-16 Hitachi Metals Ltd Ｒ−ｔ−ｂ系焼結磁石の製造方法
JP2012169464A (ja) * 2011-02-15 2012-09-06 Toyota Central R&D Labs Inc 希土類磁石およびその製造方法
EP2555207A1 (en) * 2010-03-30 2013-02-06 TDK Corporation Rare earth sintered magnet, method for producing the same, motor, and automobile
WO2013100011A1 (ja) * 2011-12-27 2013-07-04 インターメタリックス株式会社 NdFeB系焼結磁石
WO2013100010A1 (ja) * 2011-12-27 2013-07-04 インターメタリックス株式会社 NdFeB系焼結磁石
CN103503087A (zh) * 2011-12-27 2014-01-08 因太金属株式会社 NdFeB系烧结磁体
JP2014209560A (ja) * 2013-03-29 2014-11-06 大同特殊鋼株式会社 ＲＦｅＢ系磁石の製造方法
US20140335268A1 (en) * 2010-03-30 2014-11-13 Tdk Corporation Rare earth sintered magnet, method for producing same, motor and automobile
CN104575895A (zh) * 2013-10-09 2015-04-29 福特全球技术公司 磁体及其形成方法
US9028624B2 (en) 2011-12-27 2015-05-12 Intermetallics Co., Ltd. NdFeB system sintered magnet and method for producing the same
US9548157B2 (en) 2010-03-30 2017-01-17 Tdk Corporation Sintered magnet, motor, automobile, and method for producing sintered magnet
JP2020057734A (ja) * 2018-10-04 2020-04-09 信越化学工業株式会社 希土類焼結磁石
JP2021174996A (ja) * 2020-04-30 2021-11-01 有研稀土新材料股▲フン▼有限公司 Ｒ−ｔ−ｂ系焼結磁石およびその調製方法
JP2021190589A (ja) * 2020-06-01 2021-12-13 トヨタ自動車株式会社 希土類磁石及びその製造方法
JP2022013704A (ja) * 2020-06-29 2022-01-18 有研稀土新材料股▲フン▼有限公司 改質焼結Ｎｄ－Ｆｅ－Ｂ磁石、その作製方法および用途

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JP5088596B2 (ja) * 2010-09-30 2012-12-05 日立金属株式会社 Ｒ−ｔ−ｂ系焼結磁石の製造方法
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JP6555170B2 (ja) * 2015-03-31 2019-08-07 信越化学工業株式会社 Ｒ−Ｆｅ−Ｂ系焼結磁石及びその製造方法
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JP6614084B2 (ja) 2016-09-26 2019-12-04 信越化学工業株式会社 Ｒ−Ｆｅ−Ｂ系焼結磁石の製造方法
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KR102561239B1 (ko) * 2018-11-27 2023-07-31 엘지이노텍 주식회사 희토류 자석 제조방법
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US20120206227A1 (en) 2012-08-16
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US20100182113A1 (en) 2010-07-22
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EP2169689A1 (en) 2010-03-31
EP2169689B1 (en) 2014-12-03
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EP2169689A4 (en) 2013-05-29

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