WO2009041639A1 - 表面改質された希土類系焼結磁石の製造方法および表面改質された希土類系焼結磁石 - Google Patents

表面改質された希土類系焼結磁石の製造方法および表面改質された希土類系焼結磁石 Download PDF

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Publication number
WO2009041639A1
WO2009041639A1 PCT/JP2008/067527 JP2008067527W WO2009041639A1 WO 2009041639 A1 WO2009041639 A1 WO 2009041639A1 JP 2008067527 W JP2008067527 W JP 2008067527W WO 2009041639 A1 WO2009041639 A1 WO 2009041639A1
Authority
WO
WIPO (PCT)
Prior art keywords
rare earth
earth sintered
magnet
production
sintered magnets
Prior art date
Application number
PCT/JP2008/067527
Other languages
English (en)
French (fr)
Inventor
Mahoro Fujihara
Koshi Yoshimura
Atsushi Kikugawa
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 EP08833133.5A priority Critical patent/EP2197007B1/en
Priority to KR1020107008377A priority patent/KR101482816B1/ko
Priority to BRPI0817453-9A priority patent/BRPI0817453B1/pt
Priority to US12/680,312 priority patent/US9175376B2/en
Priority to JP2009534433A priority patent/JP4636207B2/ja
Priority to CN2008801090239A priority patent/CN101809690B/zh
Publication of WO2009041639A1 publication Critical patent/WO2009041639A1/ja

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C23C8/16—Oxidising using oxygen-containing compounds, e.g. water, carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C23C8/12—Oxidising using elemental oxygen or ozone
    • 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
    • H01F41/026—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 protecting methods against environmental influences, e.g. oxygen, by surface treatment
    • 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

Abstract

　本発明の課題は、湿度が変動する環境においても十分な耐食性が酸化熱処理によって付与されているとともに、酸化熱処理による磁気特性の低下が抑制された希土類系焼結磁石およびその製造方法を提供することである。その解決手段としての本発明の表面改質された希土類系焼結磁石は、表面改質された部分が、磁石の内側から順に、Ｒ、Ｆｅ、Ｂおよび酸素を含む主層、少なくともＲ、Ｆｅおよび酸素を含む非晶質層、ヘマタイトを主体とする酸化鉄を構成成分として含む最表層の少なくとも３層を有する表面改質層からなることを特徴とし、その製造方法は、磁石体に対し、酸素分圧が１×１０２Ｐａ～１×１０５Ｐａで水蒸気分圧が０．１Ｐａ～１０００Ｐａ（但し１０００Ｐａを除く）の雰囲気下、２００°C～６００°Cで熱処理を行う工程を含んでなることを特徴とするものである。
PCT/JP2008/067527 2007-09-27 2008-09-26 表面改質された希土類系焼結磁石の製造方法および表面改質された希土類系焼結磁石 WO2009041639A1 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP08833133.5A EP2197007B1 (en) 2007-09-27 2008-09-26 Process for production of surface-modified rare earth sintered magnets and surface-modified rare earth sintered magnets
KR1020107008377A KR101482816B1 (ko) 2007-09-27 2008-09-26 표면 개질된 희토류계 소결 자석의 제조 방법 및 표면 개질된 희토류계 소결 자석
BRPI0817453-9A BRPI0817453B1 (pt) 2007-09-27 2008-09-26 Magneto sinterizado à base de metal terra rara com superfície modificada e método para produção de magneto sinterizado à base de metal terra rara com superfície modificada
US12/680,312 US9175376B2 (en) 2007-09-27 2008-09-26 Method for producing surface-modified rare earth metal-based sintered magnet and surface-modified rare earth metal-based sintered magnet
JP2009534433A JP4636207B2 (ja) 2007-09-27 2008-09-26 表面改質された希土類系焼結磁石の製造方法および表面改質された希土類系焼結磁石
CN2008801090239A CN101809690B (zh) 2007-09-27 2008-09-26 经表面改性的稀土类烧结磁铁的制造方法及经表面改性的稀土类烧结磁铁

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007252624 2007-09-27
JP2007-252624 2007-09-27
JP2008-091830 2008-03-31
JP2008091830 2008-03-31

Publications (1)

Publication Number Publication Date
WO2009041639A1 true WO2009041639A1 (ja) 2009-04-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/067527 WO2009041639A1 (ja) 2007-09-27 2008-09-26 表面改質された希土類系焼結磁石の製造方法および表面改質された希土類系焼結磁石

Country Status (7)

Country Link
US (1) US9175376B2 (ja)
EP (1) EP2197007B1 (ja)
JP (1) JP4636207B2 (ja)
KR (1) KR101482816B1 (ja)
CN (1) CN101809690B (ja)
BR (1) BRPI0817453B1 (ja)
WO (1) WO2009041639A1 (ja)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011097004A (ja) * 2009-09-29 2011-05-12 Hitachi Metals Ltd 表面改質された希土類系焼結磁石の製造方法
JP2011138884A (ja) * 2009-12-28 2011-07-14 Hitachi Metals Ltd 表面改質されたＲ−Ｆｅ−Ｂ系焼結磁石の製造方法
WO2012002412A1 (ja) 2010-06-30 2012-01-05 日立金属株式会社 表面改質された希土類系焼結磁石の製造方法
JP2012204486A (ja) * 2011-03-24 2012-10-22 Hitachi Metals Ltd 表面改質されたＲ−Ｆｅ−Ｂ系焼結磁石およびその製造方法
EP2521141A1 (en) * 2009-12-28 2012-11-07 Hitachi Metals, Ltd. Corrosion-resistant magnet and method for producing the same
JP2014063792A (ja) * 2012-09-20 2014-04-10 Hitachi Metals Ltd 表面改質されたＲ−Ｆｅ−Ｂ系焼結磁石の製造方法
JP2017174962A (ja) * 2016-03-23 2017-09-28 Tdk株式会社 希土類磁石及びモーター
JP2020111794A (ja) * 2019-01-11 2020-07-27 トヨタ自動車株式会社 軟磁性部材の製造方法
JPWO2020208721A1 (ja) * 2019-04-09 2020-10-15
JP2022100371A (ja) * 2018-09-06 2022-07-05 大同特殊鋼株式会社 希土類焼結磁石及びその製造方法

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CN103219120B (zh) * 2012-01-18 2016-02-10 株式会社神户制钢所 压粉磁芯的制造方法以及由该制造方法而得的压粉磁芯
CN103646776B (zh) * 2013-12-03 2015-11-18 江苏大学 基于塑性约束的烧结钕铁硼磁体的机械表面改性方法
CN103762070B (zh) * 2014-02-25 2016-05-04 浙江爱特新能源汽车有限公司 一种表面改性的稀土永磁磁环的制备方法
CN103990794B (zh) * 2014-06-10 2016-04-13 江苏巨鑫磁业有限公司 一种粘结钕铁硼快淬永磁粉残留结晶体氧化方法
CN112746296A (zh) * 2019-12-02 2021-05-04 天津京磁电子元件制造有限公司 钕铁硼磁铁电镀铜的方法
CN111739705A (zh) * 2020-07-17 2020-10-02 福建省长汀金龙稀土有限公司 一种r-t-b磁体材料、r-t-b材料及其制备方法
CN112259359B (zh) 2020-12-22 2021-03-19 北京中科三环高技术股份有限公司 烧结钕铁硼磁体及其防腐蚀处理方法
CN113555208B (zh) * 2021-06-11 2023-11-10 杭州电子科技大学 一种烧结钕铁硼磁体的表面处理方法及烧结钕铁硼磁体
CN114023553A (zh) * 2021-11-15 2022-02-08 山西大缙华磁性材料有限公司 制作高一致性烧结钕铁硼永磁体的工艺方法
CN114566370A (zh) * 2022-03-02 2022-05-31 浙江大学 低温氧化/氮化处理提高钕铁硼抗蚀性的方法
CN115602400B (zh) * 2022-09-27 2023-11-17 宁波佳丰磁材科技有限公司 一种抗氧化钕铁硼磁体及其制备方法

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011097004A (ja) * 2009-09-29 2011-05-12 Hitachi Metals Ltd 表面改質された希土類系焼結磁石の製造方法
EP2521141A1 (en) * 2009-12-28 2012-11-07 Hitachi Metals, Ltd. Corrosion-resistant magnet and method for producing the same
JP2011138884A (ja) * 2009-12-28 2011-07-14 Hitachi Metals Ltd 表面改質されたＲ−Ｆｅ−Ｂ系焼結磁石の製造方法
EP2521141A4 (en) * 2009-12-28 2014-06-04 Hitachi Metals Ltd CORROSION-RESISTANT MAGNET AND METHOD FOR MANUFACTURING THE SAME
JP5900335B2 (ja) * 2010-06-30 2016-04-06 日立金属株式会社 表面改質された希土類系焼結磁石の製造方法
CN102959653A (zh) * 2010-06-30 2013-03-06 日立金属株式会社 经表面改性的稀土类烧结磁铁的制造方法
WO2012002412A1 (ja) 2010-06-30 2012-01-05 日立金属株式会社 表面改質された希土類系焼結磁石の製造方法
US9558885B2 (en) 2010-06-30 2017-01-31 Hitachi Metals, Ltd. Method for producing surface-modified rare earth metal-based sintered magnet
JP2012204486A (ja) * 2011-03-24 2012-10-22 Hitachi Metals Ltd 表面改質されたＲ−Ｆｅ−Ｂ系焼結磁石およびその製造方法
JP2014063792A (ja) * 2012-09-20 2014-04-10 Hitachi Metals Ltd 表面改質されたＲ−Ｆｅ−Ｂ系焼結磁石の製造方法
JP2017174962A (ja) * 2016-03-23 2017-09-28 Tdk株式会社 希土類磁石及びモーター
JP2022100371A (ja) * 2018-09-06 2022-07-05 大同特殊鋼株式会社 希土類焼結磁石及びその製造方法
JP7320102B2 (ja) 2018-09-06 2023-08-02 大同特殊鋼株式会社 希土類焼結磁石及びその製造方法
JP2020111794A (ja) * 2019-01-11 2020-07-27 トヨタ自動車株式会社 軟磁性部材の製造方法
JP7260304B2 (ja) 2019-01-11 2023-04-18 トヨタ自動車株式会社 軟磁性部材の製造方法
JPWO2020208721A1 (ja) * 2019-04-09 2020-10-15
WO2020208721A1 (ja) * 2019-04-09 2020-10-15 日立化成株式会社 希土類非焼結磁石の製造方法及び希土類非焼結磁石

Also Published As

Publication number Publication date
EP2197007A4 (en) 2015-07-22
JP4636207B2 (ja) 2011-02-23
JPWO2009041639A1 (ja) 2011-01-27
US20100252145A1 (en) 2010-10-07
EP2197007B1 (en) 2018-03-21
BRPI0817453A2 (pt) 2015-06-16
KR20100072261A (ko) 2010-06-30
US9175376B2 (en) 2015-11-03
KR101482816B1 (ko) 2015-01-14
CN101809690B (zh) 2012-07-25
BRPI0817453B1 (pt) 2019-10-08
CN101809690A (zh) 2010-08-18
EP2197007A1 (en) 2010-06-16

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