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WO2009016815A1 - Ｒ－Ｆｅ－Ｂ系希土類焼結磁石 - Google Patents

Ｒ－Ｆｅ－Ｂ系希土類焼結磁石 Download PDF

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Publication number
WO2009016815A1
WO2009016815A1 PCT/JP2008/001996 JP2008001996W WO2009016815A1 WO 2009016815 A1 WO2009016815 A1 WO 2009016815A1 JP 2008001996 W JP2008001996 W JP 2008001996W WO 2009016815 A1 WO2009016815 A1 WO 2009016815A1
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WO
WIPO (PCT)
Prior art keywords
rare earth
earth element
sintered magnet
earth sintered
concentration
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.)
Ceased
Application number
PCT/JP2008/001996
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English (en)
French (fr)
Inventor
Tomoori Odaka
Hideyuki Morimoto
Kohshi Yoshimura
Shigeru Takaki
Shinichiro Sakashita
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Proterial Ltd
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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 US12/670,718 priority Critical patent/US8177921B2/en
Priority to CN2008800111149A priority patent/CN101652822B/zh
Priority to JP2009525275A priority patent/JP5532922B2/ja
Priority to BRPI0813089A priority patent/BRPI0813089B1/pt
Priority to ES08776893.3T priority patent/ES2563460T3/es
Priority to EP08776893.3A priority patent/EP2178096B1/en
Priority to PL08776893T priority patent/PL2178096T3/pl
Publication of WO2009016815A1 publication Critical patent/WO2009016815A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • 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%
    • 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
    • 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
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Powder Metallurgy (AREA)

Abstract

　本発明のＲ－Ｆｅ－Ｂ系希土類焼結磁石は、軽希土類元素Ｎｄを主たる希土類元素Ｒとして含有するＲ2Ｆｅ14Ｂ型化合物結晶粒を主相として有するＲ－Ｆｅ－Ｂ系希土類焼結磁石であって、表面から拡散によって前記焼結磁石に導入された重希土類元素ＲＨ（ＲＨはＤｙおよびＴｂの少なくとも一方）を含有する。粒界のＲリッチ相における重希土類元素ＲＨの濃度は、Ｒ2Ｆｅ14Ｂ型化合物結晶粒の表面における重希土類元素ＲＨの濃度よりも低く、Ｒ2Ｆｅ14Ｂ型化合物結晶粒の中心部における重希土類元素ＲＨの濃度よりも高く調整されている。
PCT/JP2008/001996 2007-07-27 2008-07-25 Ｒ－Ｆｅ－Ｂ系希土類焼結磁石 Ceased WO2009016815A1 (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US12/670,718 US8177921B2 (en) 2007-07-27 2008-07-25 R-Fe-B rare earth sintered magnet
CN2008800111149A CN101652822B (zh) 2007-07-27 2008-07-25 R-Fe-B系稀土类烧结磁铁
JP2009525275A JP5532922B2 (ja) 2007-07-27 2008-07-25 Ｒ−Ｆｅ−Ｂ系希土類焼結磁石
BRPI0813089A BRPI0813089B1 (pt) 2007-07-27 2008-07-25 ímã sinterizado de terras-raras de r-fe-b
ES08776893.3T ES2563460T3 (es) 2007-07-27 2008-07-25 Imán sinterizado de tierras raras R-Fe-B
EP08776893.3A EP2178096B1 (en) 2007-07-27 2008-07-25 R-Fe-B RARE EARTH SINTERED MAGNET
PL08776893T PL2178096T3 (pl) 2007-07-27 2008-07-25 Spiekany magnes typu R-Fe-B na bazie pierwiastków ziem rzadkich

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007196159 2007-07-27
JP2007-196159 2007-07-27

Publications (1)

Publication Number Publication Date
WO2009016815A1 true WO2009016815A1 (ja) 2009-02-05

Family

ID=40304059

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/001996 Ceased WO2009016815A1 (ja) 2007-07-27 2008-07-25 Ｒ－Ｆｅ－Ｂ系希土類焼結磁石

Country Status (10)

Country Link
US (1) US8177921B2 (ja)
EP (1) EP2178096B1 (ja)
JP (1) JP5532922B2 (ja)
KR (1) KR101474946B1 (ja)
CN (1) CN101652822B (ja)
BR (1) BRPI0813089B1 (ja)
ES (1) ES2563460T3 (ja)
HU (1) HUE028707T2 (ja)
PL (1) PL2178096T3 (ja)
WO (1) WO2009016815A1 (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010113465A1 (ja) * 2009-03-31 2010-10-07 日立金属株式会社 Ｒ－ｔ－ｂ－ｍ系焼結磁石用合金及びその製造方法
WO2012111611A1 (ja) * 2011-02-15 2012-08-23 株式会社豊田中央研究所 希土類磁石およびその製造方法
JP2014130888A (ja) * 2012-12-28 2014-07-10 Hitachi Metals Ltd Ｒ−ｔ−ｂ系焼結磁石およびその製造方法
US9350203B2 (en) 2010-03-30 2016-05-24 Tdk Corporation Rare earth sintered magnet, method for producing the same, motor, and automobile
US9548157B2 (en) 2010-03-30 2017-01-17 Tdk Corporation Sintered magnet, motor, automobile, and method for producing sintered magnet

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2913126B1 (en) * 2006-03-03 2016-05-18 Hitachi Metals, Ltd. Method for producing an R-Fe-B rare earth sintered magnet
PL2178096T3 (pl) * 2007-07-27 2016-06-30 Hitachi Metals Ltd Spiekany magnes typu R-Fe-B na bazie pierwiastków ziem rzadkich
HUE025146T2 (en) * 2007-09-04 2016-01-28 Hitachi Metals Ltd R-Fe-B anisotropic sintered magnet
CN102473515B (zh) * 2009-07-15 2016-06-15 日立金属株式会社 R-t-b类烧结磁体的制造方法和r-t-b类烧结磁体
CN102483980B (zh) * 2010-03-04 2016-09-07 Tdk株式会社 稀土烧结磁体和电动机
JP5870522B2 (ja) * 2010-07-14 2016-03-01 トヨタ自動車株式会社 永久磁石の製造方法
WO2012161355A1 (ja) 2011-05-25 2012-11-29 Tdk株式会社 希土類焼結磁石、希土類焼結磁石の製造方法及び回転機
KR101922188B1 (ko) * 2011-08-03 2018-11-26 가부시키가이샤 산도쿠 희토류 소결 자석용 원료 합금 주편 및 그 제조 방법
JP6089535B2 (ja) * 2011-10-28 2017-03-08 Tdk株式会社 Ｒ−ｔ−ｂ系焼結磁石
JP5338956B2 (ja) * 2011-11-29 2013-11-13 Ｔｄｋ株式会社 希土類焼結磁石
JP5586648B2 (ja) * 2012-03-30 2014-09-10 株式会社東芝 永久磁石とそれを用いたモータおよび発電機
PH12013000103B1 (en) * 2012-04-11 2015-09-07 Shinetsu Chemical Co Rare earth sintered magnet and making method
CN109275334A (zh) * 2016-01-25 2019-01-25 Ut巴特勒有限公司 具有选择性表面改性的钕-铁-硼磁体及其制造方法
CN110106334B (zh) * 2018-02-01 2021-06-22 福建省长汀金龙稀土有限公司 一种连续进行晶界扩散和热处理的装置以及方法
CN111091945B (zh) * 2019-12-31 2021-09-28 厦门钨业股份有限公司 一种r-t-b系永磁材料、原料组合物、制备方法、应用
CN120261096B (zh) * 2025-06-05 2025-08-26 北京中科三环高技术股份有限公司 钕铁硼磁体及其制备方法

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JPS62206802A (ja) * 1986-03-06 1987-09-11 Shin Etsu Chem Co Ltd 希土類永久磁石の製造方法
JPH0547533A (ja) 1991-08-15 1993-02-26 Tdk Corp 焼結永久磁石およびその製造方法
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HUE025146T2 (en) * 2007-09-04 2016-01-28 Hitachi Metals Ltd R-Fe-B anisotropic sintered magnet

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Publication number Priority date Publication date Assignee Title
JPS62206802A (ja) * 1986-03-06 1987-09-11 Shin Etsu Chem Co Ltd 希土類永久磁石の製造方法
JPH0547533A (ja) 1991-08-15 1993-02-26 Tdk Corp 焼結永久磁石およびその製造方法
US5383978A (en) 1992-02-15 1995-01-24 Santoku Metal Industry Co., Ltd. Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magnet
WO2000006792A1 (en) * 1998-07-29 2000-02-10 Dowa Mining Co., Ltd. Permanent magnetic alloy with excellent heat resistance and process for producing the same
JP2000188213A (ja) * 1998-10-14 2000-07-04 Hitachi Metals Ltd Ｒ―ｔ―ｂ系焼結型永久磁石
JP2001284111A (ja) 2000-03-31 2001-10-12 Toshiba Corp 高耐熱性永久磁石
WO2002061769A1 (fr) * 2001-01-30 2002-08-08 Sumitomo Special Metals Co., Ltd. Procede de preparation d'un aimant permanent
JP2003213384A (ja) * 2001-11-09 2003-07-30 Hitachi Metals Ltd 永久磁石合金及びボンド磁石
JP2004079922A (ja) 2002-08-22 2004-03-11 Hitachi Ltd 磁石およびそれを用いたモータ
JP2005011973A (ja) 2003-06-18 2005-01-13 Japan Science & Technology Agency 希土類−鉄−ホウ素系磁石及びその製造方法
JP2005209669A (ja) 2004-01-20 2005-08-04 Hitachi Ltd 希土類磁石及びそれを用いた磁気回路
WO2006098204A1 (ja) * 2005-03-14 2006-09-21 Tdk Corporation Ｒ－ｔ－ｂ系焼結磁石
WO2006112403A1 (ja) * 2005-04-15 2006-10-26 Hitachi Metals, Ltd. 希土類焼結磁石とその製造方法
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WO2010113465A1 (ja) * 2009-03-31 2010-10-07 日立金属株式会社 Ｒ－ｔ－ｂ－ｍ系焼結磁石用合金及びその製造方法
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CN102361998B (zh) * 2009-03-31 2013-07-17 日立金属株式会社 R-t-b-m系烧结磁体用合金及其制造方法
JP5598465B2 (ja) * 2009-03-31 2014-10-01 日立金属株式会社 Ｒ−ｔ−ｂ−ｍ系焼結磁石用合金及びその製造方法
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US9548157B2 (en) 2010-03-30 2017-01-17 Tdk Corporation Sintered magnet, motor, automobile, and method for producing sintered magnet
EP2555208A4 (en) * 2010-03-30 2017-10-25 TDK Corporation Sintered magnet, motor, automobile, and method for producing sintered magnet
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BRPI0813089A2 (pt) 2015-08-04
ES2563460T3 (es) 2016-03-15
HUE028707T2 (en) 2016-12-28
JP5532922B2 (ja) 2014-06-25
BRPI0813089B1 (pt) 2019-02-05
US8177921B2 (en) 2012-05-15
CN101652822A (zh) 2010-02-17
CN101652822B (zh) 2012-06-13
EP2178096A4 (en) 2011-08-17
KR20100037030A (ko) 2010-04-08
KR101474946B1 (ko) 2014-12-19
EP2178096B1 (en) 2015-12-23
PL2178096T3 (pl) 2016-06-30
JPWO2009016815A1 (ja) 2010-10-14
EP2178096A1 (en) 2010-04-21
US20110012699A1 (en) 2011-01-20

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