WO2008139690A1 - NdFeB系焼結磁石製造方法 - Google Patents

NdFeB系焼結磁石製造方法 Download PDF

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Publication number
WO2008139690A1
WO2008139690A1 PCT/JP2008/001039 JP2008001039W WO2008139690A1 WO 2008139690 A1 WO2008139690 A1 WO 2008139690A1 JP 2008001039 W JP2008001039 W JP 2008001039W WO 2008139690 A1 WO2008139690 A1 WO 2008139690A1
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Prior art keywords
production
ndfeb sintered
magnet
magnets
sintered magnets
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PCT/JP2008/001039
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English (en)
French (fr)
Inventor
Masato Sagawa
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Intermetallics Co., 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.)
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Publication date
Application filed by Intermetallics Co., Ltd. filed Critical Intermetallics Co., Ltd.
Priority to JP2009513990A priority Critical patent/JP5363314B2/ja
Priority to EP08751583.9A priority patent/EP2144257B1/en
Priority to US12/595,872 priority patent/US8801870B2/en
Priority to CN2008800082146A priority patent/CN101641750B/zh
Priority to CA2685790A priority patent/CA2685790C/en
Priority to KR1020097018637A priority patent/KR101397328B1/ko
Priority to MX2009011341A priority patent/MX2009011341A/es
Publication of WO2008139690A1 publication Critical patent/WO2008139690A1/ja
Priority to US14/317,406 priority patent/US20140308440A1/en

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    • 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
    • H01F41/005—Impregnating or encapsulating
    • 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
    • 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
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • 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

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

Abstract

　本発明は、保磁力向上効果をより高め、且つその効果のばらつきを少なくすることができ、しかもコストが低いNdFeB系焼結磁石の製造方法を提供することを目的とする。本発明に係るNdFeB系焼結磁石の製造方法は、Dy又は／及びTbを含む粉末をNdFeB系焼結磁石に塗布した後に加熱することにより、前記粉末中のRhを前記NdFeB系焼結磁石中に粒界を通じて拡散させる工程を有するNdFeB焼結磁石の製造方法において、前記粉末が金属状態のAlを0.5～50重量％含むこと、及び、前記NdFeB焼結磁石中に含まれる酸素量が0.4重量％以下であること、を特徴とする。
PCT/JP2008/001039 2007-05-01 2008-04-21 NdFeB系焼結磁石製造方法 WO2008139690A1 (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP2009513990A JP5363314B2 (ja) 2007-05-01 2008-04-21 ＮｄＦｅＢ系焼結磁石製造方法
EP08751583.9A EP2144257B1 (en) 2007-05-01 2008-04-21 METHOD FOR MAKING NdFeB SINTERED MAGNET
US12/595,872 US8801870B2 (en) 2007-05-01 2008-04-21 Method for making NdFeB sintered magnet
CN2008800082146A CN101641750B (zh) 2007-05-01 2008-04-21 NdFeB系烧结磁体制造方法
CA2685790A CA2685790C (en) 2007-05-01 2008-04-21 Method for making ndfeb system sintered magnet
KR1020097018637A KR101397328B1 (ko) 2007-05-01 2008-04-21 ＮｄＦｅＢ계 소결자석 제조방법
MX2009011341A MX2009011341A (es) 2007-05-01 2008-04-21 Metodo para hacer iman sinterizado de neodimio fierro boro.
US14/317,406 US20140308440A1 (en) 2007-05-01 2014-06-27 METHOD FOR MAKING NdFeB SINTERED MAGNET

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-121066 2007-05-01
JP2007121066 2007-05-01

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US12/595,872 A-371-Of-International US8801870B2 (en) 2007-05-01 2008-04-21 Method for making NdFeB sintered magnet
US14/317,406 Continuation US20140308440A1 (en) 2007-05-01 2014-06-27 METHOD FOR MAKING NdFeB SINTERED MAGNET

Publications (1)

Publication Number Publication Date
WO2008139690A1 true WO2008139690A1 (ja) 2008-11-20

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Country Status (10)

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US (2) US8801870B2 (ja)
EP (1) EP2144257B1 (ja)
JP (1) JP5363314B2 (ja)
KR (1) KR101397328B1 (ja)
CN (1) CN101641750B (ja)
CA (1) CA2685790C (ja)
MX (1) MX2009011341A (ja)
RU (1) RU2009144282A (ja)
TW (1) TW200847196A (ja)
WO (1) WO2008139690A1 (ja)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009087975A1 (ja) * 2008-01-11 2009-07-16 Intermetallics Co., Ltd. NdFeB焼結磁石の製造方法及びNdFeB焼結磁石
WO2011004894A1 (ja) * 2009-07-10 2011-01-13 インターメタリックス株式会社 NdFeB焼結磁石及びその製造方法
JP2011014668A (ja) * 2009-07-01 2011-01-20 Shin-Etsu Chemical Co Ltd 希土類磁石の製造方法及び希土類磁石
JP2011114335A (ja) * 2009-11-23 2011-06-09 Yantai Shougang Magnetic Materials Inc 希土類永久磁石材料の製造方法
JP2012151286A (ja) * 2011-01-19 2012-08-09 Hitachi Metals Ltd Ｒ−ｔ−ｂ系焼結磁石の製造方法
WO2013061836A1 (ja) 2011-10-27 2013-05-02 インターメタリックス株式会社 NdFeB系焼結磁石の製造方法
WO2014054163A1 (ja) * 2012-10-05 2014-04-10 株式会社 日立製作所 焼結磁石及びその製造方法
JP2014072259A (ja) * 2012-09-28 2014-04-21 Hitachi Metals Ltd Ｒ−ｔ−ｂ系焼結磁石の製造方法
JP2015070142A (ja) * 2013-09-30 2015-04-13 日立金属株式会社 Ｒ−ｔ−ｂ系焼結磁石の製造方法
WO2015182705A1 (ja) * 2014-05-29 2015-12-03 日立金属株式会社 Ｒ－ｔ－ｂ系焼結磁石の製造方法
WO2016039352A1 (ja) * 2014-09-11 2016-03-17 日立金属株式会社 Ｒ－ｔ－ｂ系焼結磁石の製造方法
WO2016039353A1 (ja) * 2014-09-11 2016-03-17 日立金属株式会社 Ｒ－ｔ－ｂ系焼結磁石の製造方法
JP2016129217A (ja) * 2015-01-09 2016-07-14 現代自動車株式会社Ｈｙｕｎｄａｉ Ｍｏｔｏｒ Ｃｏｍｐａｎｙ 希土類永久磁石及びその製造方法
EP2455954A4 (en) * 2009-07-15 2016-08-31 Hitachi Metals Ltd METHOD FOR PRODUCTION OF SINTERED R-T-B MAGNETS AND SINTERED R-T-B MAGNETS
US10614952B2 (en) 2011-05-02 2020-04-07 Shin-Etsu Chemical Co., Ltd. Rare earth permanent magnets and their preparation
JP2021087010A (ja) * 2019-11-28 2021-06-03 煙台首鋼磁性材料株式有限公司 Ｎｄ−Ｆｅ−Ｂ系焼結永久磁性体の希土類元素拡散処理方法
DE112016003688B4 (de) 2015-08-13 2023-02-02 Beijing Zhong Ke San Huan Hi-Tech Co., Ltd Verfahren zur Herstellung eines Seltenerddauermagneten

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EP2624265A4 (en) * 2010-09-30 2017-08-02 Hitachi Metals, Ltd. R-t-b sintered magnet manufacturing method
CN103903825A (zh) * 2012-12-28 2014-07-02 比亚迪股份有限公司 一种钕铁硼永磁材料的制备方法
WO2017018291A1 (ja) * 2015-07-30 2017-02-02 日立金属株式会社 Ｒ－ｔ－ｂ系焼結磁石の製造方法
EP3182423B1 (en) 2015-12-18 2019-03-20 JL Mag Rare-Earth Co., Ltd. Neodymium iron boron magnet and preparation method thereof
CN105632748B (zh) * 2015-12-25 2019-01-11 宁波韵升股份有限公司 一种提高烧结钕铁硼薄片磁体磁性能的方法
JP2018056188A (ja) 2016-09-26 2018-04-05 信越化学工業株式会社 Ｒ−Ｆｅ−Ｂ系焼結磁石
CN108242336B (zh) * 2017-12-25 2019-12-03 江苏大学 一种高性能低成本复合磁体的制备方法
CN108269664A (zh) * 2017-12-29 2018-07-10 中国科学院宁波材料技术与工程研究所 稀土铁硼永磁材料及其制备方法
CN109473248A (zh) * 2018-11-21 2019-03-15 重庆科技学院 一种NdCeFeB各向异性永磁体及其制备方法
JP7167673B2 (ja) * 2018-12-03 2022-11-09 Tdk株式会社 Ｒ‐ｔ‐ｂ系永久磁石の製造方法
CN111354524B (zh) * 2018-12-24 2021-10-01 董元 一种钕铁硼各向异性粘结磁粉的制备方法
CN111326307B (zh) * 2020-03-17 2021-12-28 宁波金鸡强磁股份有限公司 一种渗透磁体用的涂覆材料及高矫顽力钕铁硼磁体的制备方法
CN111940266A (zh) * 2020-04-10 2020-11-17 中磁科技股份有限公司 钕铁硼产品的涂覆工艺
CN112712954B (zh) * 2020-12-23 2022-11-04 安徽大地熊新材料股份有限公司 烧结钕铁硼磁体的制备方法
CN113620701B (zh) * 2021-09-29 2023-04-18 海安南京大学高新技术研究院 一种超细晶耐高温高频锰锌铁氧体制备方法
CN114974776A (zh) 2022-05-31 2022-08-30 烟台东星磁性材料股份有限公司 钕铁硼稀土磁体及其制备方法

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US20100119703A1 (en) 2010-05-13
US20140308440A1 (en) 2014-10-16
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CA2685790C (en) 2015-12-08
MX2009011341A (es) 2010-04-01
EP2144257A4 (en) 2012-01-11
CN101641750A (zh) 2010-02-03
CN101641750B (zh) 2012-07-11
CA2685790A1 (en) 2008-11-20
EP2144257B1 (en) 2014-03-12
JPWO2008139690A1 (ja) 2010-07-29
JP5363314B2 (ja) 2013-12-11
RU2009144282A (ru) 2011-06-10
KR20100014927A (ko) 2010-02-11
KR101397328B1 (ko) 2014-05-19
US8801870B2 (en) 2014-08-12

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