JP7843935B2 - 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 - Google Patents

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

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Publication number
JP7843935B2
JP7843935B2 JP2025530848A JP2025530848A JP7843935B2 JP 7843935 B2 JP7843935 B2 JP 7843935B2 JP 2025530848 A JP2025530848 A JP 2025530848A JP 2025530848 A JP2025530848 A JP 2025530848A JP 7843935 B2 JP7843935 B2 JP 7843935B2
Authority
JP
Japan
Prior art keywords
rare earth
main phase
sintered magnet
phase
concentration
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
JP2025530848A
Other languages
English (en)
Japanese (ja)
Other versions
JPWO2025009052A1 (https=
JPWO2025009052A5 (https=
Inventor
亮人 岩▲崎▼
泰貴 中村
隆徳 渡邉
貴也 下川
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
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of JPWO2025009052A1 publication Critical patent/JPWO2025009052A1/ja
Publication of JPWO2025009052A5 publication Critical patent/JPWO2025009052A5/ja
Application granted granted Critical
Publication of JP7843935B2 publication Critical patent/JP7843935B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
JP2025530848A 2023-07-04 2023-07-04 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 Active JP7843935B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2023/024737 WO2025009052A1 (ja) 2023-07-04 2023-07-04 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

Publications (3)

Publication Number Publication Date
JPWO2025009052A1 JPWO2025009052A1 (https=) 2025-01-09
JPWO2025009052A5 JPWO2025009052A5 (https=) 2025-08-26
JP7843935B2 true JP7843935B2 (ja) 2026-04-10

Family

ID=94171909

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2025530848A Active JP7843935B2 (ja) 2023-07-04 2023-07-04 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

Country Status (4)

Country Link
JP (1) JP7843935B2 (https=)
KR (1) KR20260012802A (https=)
CN (1) CN121420363A (https=)
WO (1) WO2025009052A1 (https=)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015153813A (ja) 2014-02-12 2015-08-24 トヨタ自動車株式会社 希土類磁石の製造方法
JP2016152246A (ja) 2015-02-16 2016-08-22 Tdk株式会社 希土類系永久磁石
WO2021205580A1 (ja) 2020-04-08 2021-10-14 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
WO2022107221A1 (ja) 2020-11-17 2022-05-27 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
WO2023012929A1 (ja) 2021-08-04 2023-02-09 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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01164007A (ja) * 1987-12-21 1989-06-28 Toshiba Corp 永久磁石の製造方法
JP7143605B2 (ja) 2017-03-30 2022-09-29 Tdk株式会社 Ｒ－ｔ－ｂ系焼結磁石
JP7294288B2 (ja) * 2020-09-25 2023-06-20 トヨタ自動車株式会社 磁性材料及びその製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015153813A (ja) 2014-02-12 2015-08-24 トヨタ自動車株式会社 希土類磁石の製造方法
JP2016152246A (ja) 2015-02-16 2016-08-22 Tdk株式会社 希土類系永久磁石
WO2021205580A1 (ja) 2020-04-08 2021-10-14 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
WO2022107221A1 (ja) 2020-11-17 2022-05-27 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
WO2023012929A1 (ja) 2021-08-04 2023-02-09 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

Also Published As

Publication number Publication date
WO2025009052A1 (ja) 2025-01-09
JPWO2025009052A1 (https=) 2025-01-09
KR20260012802A (ko) 2026-01-27
CN121420363A (zh) 2026-01-27

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