EP4152348A4 - Heavy rare earth-free high-performance neodymium-iron-boron permanent magnet material and preparation method therefor - Google Patents

Heavy rare earth-free high-performance neodymium-iron-boron permanent magnet material and preparation method therefor Download PDF

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Publication number
EP4152348A4
EP4152348A4 EP20942024.9A EP20942024A EP4152348A4 EP 4152348 A4 EP4152348 A4 EP 4152348A4 EP 20942024 A EP20942024 A EP 20942024A EP 4152348 A4 EP4152348 A4 EP 4152348A4
Authority
EP
European Patent Office
Prior art keywords
iron
preparation
permanent magnet
rare earth
method therefor
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.)
Pending
Application number
EP20942024.9A
Other languages
German (de)
French (fr)
Other versions
EP4152348A1 (en
Inventor
Jinhao ZHU
Bo Zheng
Guangfei DING
Lei Jin
Zhehuan JIN
Shuai GUO
Renjie Chen
Aru YAN
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.)
Ningbo Institute of Material Technology and Engineering of CAS
Original Assignee
Ningbo Institute of Material Technology and Engineering of CAS
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 Ningbo Institute of Material Technology and Engineering of CAS filed Critical Ningbo Institute of Material Technology and Engineering of CAS
Publication of EP4152348A1 publication Critical patent/EP4152348A1/en
Publication of EP4152348A4 publication Critical patent/EP4152348A4/en
Pending legal-status Critical Current

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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
    • 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
    • H01F41/0273—Imparting anisotropy
EP20942024.9A 2020-06-23 2020-06-23 Heavy rare earth-free high-performance neodymium-iron-boron permanent magnet material and preparation method therefor Pending EP4152348A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/097637 WO2021258280A1 (en) 2020-06-23 2020-06-23 Heavy rare earth-free high-performance neodymium-iron-boron permanent magnet material and preparation method therefor

Publications (2)

Publication Number Publication Date
EP4152348A1 EP4152348A1 (en) 2023-03-22
EP4152348A4 true EP4152348A4 (en) 2023-07-05

Family

ID=79282656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20942024.9A Pending EP4152348A4 (en) 2020-06-23 2020-06-23 Heavy rare earth-free high-performance neodymium-iron-boron permanent magnet material and preparation method therefor

Country Status (2)

Country Link
EP (1) EP4152348A4 (en)
WO (1) WO2021258280A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117373767A (en) * 2022-06-30 2024-01-09 浙江东阳东磁稀土有限公司 Modified sintered NdFeB permanent magnet material and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108987017A (en) * 2018-07-23 2018-12-11 浙江东阳东磁稀土有限公司 A kind of no heavy rare earth sintered NdFeB
CN109935433A (en) * 2017-12-19 2019-06-25 罗伯特·博世有限公司 Manufacture method, magnetic material, Hard Magnetic, motor, starter and the generator of magnetic material

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT393177B (en) * 1989-04-28 1991-08-26 Boehler Gmbh PERMANENT MAGNET (MATERIAL) AND METHOD FOR PRODUCING THE SAME
US5143560A (en) * 1990-04-20 1992-09-01 Hitachi Metals, Inc., Ltd. Method for forming Fe-B-R-T alloy powder by hydrogen decrepitation of die-upset billets
CN101325109B (en) * 2008-04-08 2010-09-08 浙江大学 High-strength tenacity agglomeration neodymium-iron-boron magnet reconstructed by crystal boundary phase and preparation method thereof
CN101740190B (en) * 2008-11-26 2013-01-16 绵阳西磁磁电有限公司 Sintered neodymium-iron-boron magnet of high cost performance and high corrosion resistance and preparation method thereof
CN103632834B (en) * 2013-12-03 2015-12-02 江苏大学 A kind of preparation method of high-performance anisotropic Nd-Fe-B
CN109545491B (en) * 2019-01-29 2020-05-26 中国科学院宁波材料技术与工程研究所 Neodymium-iron-boron permanent magnet material and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109935433A (en) * 2017-12-19 2019-06-25 罗伯特·博世有限公司 Manufacture method, magnetic material, Hard Magnetic, motor, starter and the generator of magnetic material
CN108987017A (en) * 2018-07-23 2018-12-11 浙江东阳东磁稀土有限公司 A kind of no heavy rare earth sintered NdFeB

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021258280A1 *

Also Published As

Publication number Publication date
WO2021258280A1 (en) 2021-12-30
EP4152348A1 (en) 2023-03-22

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