JP7130156B1 - 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 - Google Patents

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 Download PDF

Info

Publication number
JP7130156B1
JP7130156B1 JP2021573953A JP2021573953A JP7130156B1 JP 7130156 B1 JP7130156 B1 JP 7130156B1 JP 2021573953 A JP2021573953 A JP 2021573953A JP 2021573953 A JP2021573953 A JP 2021573953A JP 7130156 B1 JP7130156 B1 JP 7130156B1
Authority
JP
Japan
Prior art keywords
subphase
rare earth
concentration
earth sintered
sintered 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
JP2021573953A
Other languages
English (en)
Japanese (ja)
Other versions
JPWO2023012929A1 (https=
Inventor
亮人 岩▲崎▼
泰貴 中村
達也 北野
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of JP7130156B1 publication Critical patent/JP7130156B1/ja
Publication of JPWO2023012929A1 publication Critical patent/JPWO2023012929A1/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H01F1/047—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
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
    • 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
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • 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
    • 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
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/02—Details of the magnetic circuit characterised by the magnetic material
    • 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
    • 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
    • B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/45—Rare earth metals, i.e. Sc, Y, Lanthanides (57-71)
    • 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
    • C22C2200/00—Crystalline structure
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
JP2021573953A 2021-08-04 2021-08-04 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 Active JP7130156B1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/028943 WO2023012929A1 (ja) 2021-08-04 2021-08-04 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

Publications (2)

Publication Number Publication Date
JP7130156B1 true JP7130156B1 (ja) 2022-09-02
JPWO2023012929A1 JPWO2023012929A1 (https=) 2023-02-09

Family

ID=83148909

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021573953A Active JP7130156B1 (ja) 2021-08-04 2021-08-04 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

Country Status (6)

Country Link
US (1) US20240339252A1 (https=)
JP (1) JP7130156B1 (https=)
KR (1) KR102761377B1 (https=)
CN (1) CN117751414B (https=)
DE (1) DE112021008057T5 (https=)
WO (1) WO2023012929A1 (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024042638A1 (ja) * 2022-08-24 2024-02-29 三菱電機株式会社 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
WO2026023100A1 (ja) * 2024-07-24 2026-01-29 三菱電機株式会社 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6692506B1 (ja) * 2019-09-10 2020-05-13 三菱電機株式会社 希土類磁石合金、その製造方法、希土類磁石、回転子及び回転機
JP7843934B2 (ja) * 2023-07-04 2026-04-10 三菱電機株式会社 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
JP7843935B2 (ja) * 2023-07-04 2026-04-10 三菱電機株式会社 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
JPWO2025057372A1 (https=) * 2023-09-14 2025-03-20
WO2025057373A1 (ja) * 2023-09-14 2025-03-20 三菱電機株式会社 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
CN117936210A (zh) * 2023-12-29 2024-04-26 烟台东星磁性材料股份有限公司 高性能高热稳性烧结钕铁硼磁体及其制备方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009302262A (ja) * 2008-06-12 2009-12-24 Toshiba Corp 永久磁石およびその製造方法
JP2015204390A (ja) * 2014-04-15 2015-11-16 Tdk株式会社 永久磁石およびモータ
JP6359232B1 (ja) * 2017-12-05 2018-07-18 三菱電機株式会社 永久磁石、永久磁石の製造方法、および、回転機
WO2019151245A1 (ja) * 2018-01-30 2019-08-08 Tdk株式会社 Ｒ－ｔ－ｂ系希土類永久磁石
JP6692506B1 (ja) * 2019-09-10 2020-05-13 三菱電機株式会社 希土類磁石合金、その製造方法、希土類磁石、回転子及び回転機
JP2020107849A (ja) * 2018-12-28 2020-07-09 トヨタ自動車株式会社 希土類磁石及びその製造方法
JP2020155657A (ja) * 2019-03-22 2020-09-24 日立金属株式会社 Ｒ−ｔ−ｂ系焼結磁石の製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8206516B2 (en) * 2006-03-03 2012-06-26 Hitachi Metals, Ltd. R—Fe—B rare earth sintered magnet and method for producing same
JP2014086529A (ja) * 2012-10-23 2014-05-12 Toyota Motor Corp 希土類焼結磁石とその製造方法
JP2018174205A (ja) 2017-03-31 2018-11-08 大同特殊鋼株式会社 Ｒ−ｔ−ｂ系焼結磁石およびその製造方法
JP2021009862A (ja) 2017-10-18 2021-01-28 住友電気工業株式会社 希土類磁石素材
JP7361947B2 (ja) * 2020-11-17 2023-10-16 三菱電機株式会社 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009302262A (ja) * 2008-06-12 2009-12-24 Toshiba Corp 永久磁石およびその製造方法
JP2015204390A (ja) * 2014-04-15 2015-11-16 Tdk株式会社 永久磁石およびモータ
JP6359232B1 (ja) * 2017-12-05 2018-07-18 三菱電機株式会社 永久磁石、永久磁石の製造方法、および、回転機
WO2019151245A1 (ja) * 2018-01-30 2019-08-08 Tdk株式会社 Ｒ－ｔ－ｂ系希土類永久磁石
JP2020107849A (ja) * 2018-12-28 2020-07-09 トヨタ自動車株式会社 希土類磁石及びその製造方法
JP2020155657A (ja) * 2019-03-22 2020-09-24 日立金属株式会社 Ｒ−ｔ−ｂ系焼結磁石の製造方法
JP6692506B1 (ja) * 2019-09-10 2020-05-13 三菱電機株式会社 希土類磁石合金、その製造方法、希土類磁石、回転子及び回転機

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024042638A1 (ja) * 2022-08-24 2024-02-29 三菱電機株式会社 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
WO2026023100A1 (ja) * 2024-07-24 2026-01-29 三菱電機株式会社 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機

Also Published As

Publication number Publication date
CN117751414B (zh) 2024-11-12
KR102761377B1 (ko) 2025-01-31
KR20240028440A (ko) 2024-03-05
DE112021008057T5 (de) 2024-07-11
CN117751414A (zh) 2024-03-22
JPWO2023012929A1 (https=) 2023-02-09
US20240339252A1 (en) 2024-10-10
WO2023012929A1 (ja) 2023-02-09

Similar Documents

Publication Publication Date Title
JP7130156B1 (ja) 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
JP7214043B2 (ja) 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
JP6274216B2 (ja) Ｒ−ｔ−ｂ系焼結磁石、および、モータ
JP7361947B2 (ja) 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
JP6692506B1 (ja) 希土類磁石合金、その製造方法、希土類磁石、回転子及び回転機
JP7699724B2 (ja) 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
JP7742957B2 (ja) 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
JP7843934B2 (ja) 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
JP7843935B2 (ja) 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
WO2026023100A1 (ja) 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
WO2025057372A1 (ja) 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
WO2025057373A1 (ja) 希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20211213

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20211213

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20211213

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220322

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220427

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: 20220726

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20220823

R150 Certificate of patent or registration of utility model

Ref document number: 7130156

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250