JP7110662B2 - Ｒ‐ｔ‐ｂ系焼結磁石 - Google Patents

Ｒ‐ｔ‐ｂ系焼結磁石 Download PDF

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JP7110662B2
JP7110662B2 JP2018062776A JP2018062776A JP7110662B2 JP 7110662 B2 JP7110662 B2 JP 7110662B2 JP 2018062776 A JP2018062776 A JP 2018062776A JP 2018062776 A JP2018062776 A JP 2018062776A JP 7110662 B2 JP7110662 B2 JP 7110662B2
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phase
sintered magnet
grain boundary
oxide
magnet
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Japanese (ja)
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JP2019176011A (ja
JP2019176011A5 (enExample
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真理子 藤原
将史 三輪
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TDK Corp
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TDK Corp
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Priority to JP2018062776A priority Critical patent/JP7110662B2/ja
Priority to US16/364,443 priority patent/US11145444B2/en
Priority to CN201910238251.6A priority patent/CN110323019B/zh
Publication of JP2019176011A publication Critical patent/JP2019176011A/ja
Publication of JP2019176011A5 publication Critical patent/JP2019176011A5/ja
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/16—Both compacting and sintering in successive or repeated steps
    • 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
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • 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
    • 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
    • B22F2201/00—Treatment under specific atmosphere
    • B22F2201/01—Reducing atmosphere
    • B22F2201/013—Hydrogen
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/35—Iron
    • B22F2301/355—Rare Earth - Fe intermetallic 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • 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
    • H01F1/0576—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 pressed, e.g. hot working

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Power Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
JP2018062776A 2018-03-28 2018-03-28 Ｒ‐ｔ‐ｂ系焼結磁石 Active JP7110662B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2018062776A JP7110662B2 (ja) 2018-03-28 2018-03-28 Ｒ‐ｔ‐ｂ系焼結磁石
US16/364,443 US11145444B2 (en) 2018-03-28 2019-03-26 R-T-B-based sintered magnet
CN201910238251.6A CN110323019B (zh) 2018-03-28 2019-03-27 R-t-b系烧结磁铁

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018062776A JP7110662B2 (ja) 2018-03-28 2018-03-28 Ｒ‐ｔ‐ｂ系焼結磁石

Publications (3)

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JP2019176011A JP2019176011A (ja) 2019-10-10
JP2019176011A5 JP2019176011A5 (enExample) 2021-04-08
JP7110662B2 true JP7110662B2 (ja) 2022-08-02

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US (1) US11145444B2 (enExample)
JP (1) JP7110662B2 (enExample)
CN (1) CN110323019B (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111243812B (zh) * 2020-02-29 2022-04-05 厦门钨业股份有限公司 一种r-t-b系永磁材料及其制备方法和应用
JP7214043B2 (ja) * 2020-04-08 2023-01-27 三菱電機株式会社 希土類焼結磁石および希土類焼結磁石の製造方法、回転子並びに回転機
CN118486518B (zh) * 2024-07-16 2024-10-18 南通正海磁材有限公司 R-t-b-m系永磁材料及其制备方法和应用

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014146788A (ja) 2013-01-07 2014-08-14 Showa Denko Kk Ｒ−ｔ−ｂ系希土類焼結磁石、ｒ−ｔ−ｂ系希土類焼結磁石用合金およびその製造方法
JP2016149397A (ja) 2015-02-10 2016-08-18 Tdk株式会社 Ｒ−ｔ−ｂ系焼結磁石

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
JPS62291902A (ja) * 1986-06-12 1987-12-18 Toshiba Corp 永久磁石の製造方法
US5405455A (en) * 1991-06-04 1995-04-11 Shin-Etsu Chemical Co. Ltd. Rare earth-based permanent magnet
JPH05226129A (ja) * 1992-02-18 1993-09-03 Kobe Steel Ltd 高耐食性希土類磁石の製造方法
AU2001275775A1 (en) * 2000-08-03 2002-02-18 Sanei Kasei Co., Limited Nanocomposite permanent magnet
US20030130129A1 (en) * 2001-07-13 2003-07-10 Massachusetts Institute Of Technology Vacuum processing for fabrication of superconducting films fabricated by metal-organic processing
JP3997413B2 (ja) * 2002-11-14 2007-10-24 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
EP1562203A4 (en) 2003-03-12 2009-08-05 Hitachi Metals Ltd R-T-B SINTERED MAGNET AND PROCESS FOR ITS MANUFACTURE
JP2005260098A (ja) * 2004-03-12 2005-09-22 Tdk Corp 希土類磁石およびその製造方法
EP1744331B1 (en) 2004-03-31 2016-06-29 TDK Corporation Rare earth magnet and method for manufacturing same
JP5115511B2 (ja) 2008-03-28 2013-01-09 Ｔｄｋ株式会社 希土類磁石
US8823478B2 (en) * 2010-03-30 2014-09-02 Tdk Corporation Rare earth sintered magnet, method for producing same, motor and automobile
EP2444985B1 (en) * 2010-10-25 2018-07-11 Toyota Jidosha Kabushiki Kaisha Production method of rare earth magnet
JP5572673B2 (ja) 2011-07-08 2014-08-13 昭和電工株式会社 Ｒ−ｔ−ｂ系希土類焼結磁石用合金、ｒ−ｔ−ｂ系希土類焼結磁石用合金の製造方法、ｒ−ｔ−ｂ系希土類焼結磁石用合金材料、ｒ−ｔ−ｂ系希土類焼結磁石、ｒ−ｔ−ｂ系希土類焼結磁石の製造方法およびモーター
JP6303480B2 (ja) * 2013-03-28 2018-04-04 Tdk株式会社 希土類磁石
US10109403B2 (en) * 2013-08-09 2018-10-23 Tdk Corporation R-T-B based sintered magnet and motor
JP6493801B2 (ja) * 2014-06-27 2019-04-03 日立金属株式会社 コイル部品
CN107077965B (zh) * 2015-07-30 2018-12-28 日立金属株式会社 R-t-b系烧结磁体的制造方法
JP6759649B2 (ja) * 2016-03-23 2020-09-23 Tdk株式会社 希土類磁石及びモーター
JP7387992B2 (ja) * 2019-03-20 2023-11-29 Tdk株式会社 Ｒ－ｔ－ｂ系永久磁石

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014146788A (ja) 2013-01-07 2014-08-14 Showa Denko Kk Ｒ−ｔ−ｂ系希土類焼結磁石、ｒ−ｔ−ｂ系希土類焼結磁石用合金およびその製造方法
JP2016149397A (ja) 2015-02-10 2016-08-18 Tdk株式会社 Ｒ−ｔ−ｂ系焼結磁石

Also Published As

Publication number Publication date
JP2019176011A (ja) 2019-10-10
CN110323019B (zh) 2021-03-26
US20190304639A1 (en) 2019-10-03
CN110323019A (zh) 2019-10-11
US11145444B2 (en) 2021-10-12

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