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

Ｒ‐ｔ‐ｂ系焼結磁石 Download PDF

Info

Publication number
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
Authority
JP
Japan
Prior art keywords
phase
sintered magnet
grain boundary
oxide
magnet
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.)
Active
Application number
JP2018062776A
Other languages
English (en)
Japanese (ja)
Other versions
JP2019176011A (ja
JP2019176011A5 (enExample
Inventor
真理子 藤原
将史 三輪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
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
Application granted granted Critical
Publication of JP7110662B2 publication Critical patent/JP7110662B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Landscapes

  • 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)

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

Family

ID=68057240

Family Applications (1)

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

Country Status (3)

Country Link
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
US12603200B2 (en) * 2020-04-08 2026-04-14 Mitsubishi Electric Corporation Rare earth sintered magnet, method for producing rare earth sintered magnet, rotor, and rotary machine
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)

* Cited by examiner, † Cited by third party
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
US20050268989A1 (en) 2003-03-12 2005-12-08 Hiroyuki Tomizawa R-t-b sintered magnet and process for producing the same
JP2005260098A (ja) * 2004-03-12 2005-09-22 Tdk Corp 希土類磁石およびその製造方法
KR100866018B1 (ko) 2004-03-31 2008-10-31 티디케이가부시기가이샤 희토류 자석 및 이의 제조방법
JP5115511B2 (ja) 2008-03-28 2013-01-09 Ｔｄｋ株式会社 希土類磁石
CN102822912B (zh) * 2010-03-30 2015-07-22 Tdk株式会社 稀土类烧结磁铁以及其制造方法、马达以及汽车
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
CN105453193B (zh) * 2013-08-09 2018-01-12 Tdk株式会社 R‑t‑b系烧结磁铁以及电机
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
US20190304639A1 (en) 2019-10-03
CN110323019B (zh) 2021-03-26
US11145444B2 (en) 2021-10-12
JP2019176011A (ja) 2019-10-10
CN110323019A (zh) 2019-10-11

Similar Documents

Publication Publication Date Title
JP7180095B2 (ja) Ｒ‐ｔ‐ｂ系焼結磁石
EP2590181B1 (en) Process of manufacturing an r-t-b based rare earth permanent magnet
US9997284B2 (en) Sintered magnet
RU2389098C2 (ru) Функционально-градиентный редкоземельный постоянный магнит
KR101147385B1 (ko) 경사기능성 희토류 영구자석
JP6201446B2 (ja) 焼結磁石
RU2377681C2 (ru) Редкоземельный постоянный магнит
CN113450984B (zh) R－t－b系永久磁铁
KR102574303B1 (ko) 네오디뮴철붕소 자성체재료, 원료조성물과 제조방법 및 응용
JP5729051B2 (ja) Ｒ−ｔ−ｂ系希土類焼結磁石
EP2779179B1 (en) R-T-B-based rare earth magnet particles, process for producing the R-T-B-based rare earth magnet particles, and bonded magnet
EP3121821B1 (en) Permanent magnet, motor, and generator
CN111261353B (zh) R-t-b系永磁体
EP4016557A1 (en) Neodymium-iron-boron magnet material, raw material composition, preparation method therefor and use thereof
US20170278609A1 (en) Rare earth magnet and motor
JP7783416B2 (ja) 高耐食性と高磁気特性を有するネオジム鉄ボロン系焼結磁石及びその製造方法
CN111710489B (zh) R-t-b系永久磁铁
US11145444B2 (en) R-T-B-based sintered magnet
JP4702548B2 (ja) 傾斜機能性希土類永久磁石
JP7846125B2 (ja) Ｒ－ｔ－ｂ磁石及びその製造方法
JP7188172B2 (ja) Ｒ‐ｔ‐ｂ系永久磁石
JP5359383B2 (ja) 磁石成形体及びその製造方法
CN111724956A (zh) R-t-b系永久磁铁
CN113838621A (zh) R-t-b系永久磁铁及电动机
JP7409193B2 (ja) Ｒ‐ｔ‐ｂ系永久磁石

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210226

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210226

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20211224

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220104

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220202

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20220621

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20220704

R150 Certificate of patent or registration of utility model

Ref document number: 7110662

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250