EP4199016A4 - Surface treatment method for rare earth magnetic powder, and injection molded rare earth magnetic material and preparation method therefor - Google Patents

Surface treatment method for rare earth magnetic powder, and injection molded rare earth magnetic material and preparation method therefor Download PDF

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Publication number
EP4199016A4
EP4199016A4 EP21827559.2A EP21827559A EP4199016A4 EP 4199016 A4 EP4199016 A4 EP 4199016A4 EP 21827559 A EP21827559 A EP 21827559A EP 4199016 A4 EP4199016 A4 EP 4199016A4
Authority
EP
European Patent Office
Prior art keywords
rare earth
earth magnetic
preparation
surface treatment
injection molded
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
EP21827559.2A
Other languages
German (de)
French (fr)
Other versions
EP4199016A1 (en
Inventor
Jiangping HU
Zhihong Jin
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.)
Hengdian Group DMEGC Magnetics Co Ltd
Original Assignee
Hengdian Group DMEGC Magnetics Co Ltd
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 Hengdian Group DMEGC Magnetics Co Ltd filed Critical Hengdian Group DMEGC Magnetics Co Ltd
Publication of EP4199016A1 publication Critical patent/EP4199016A1/en
Publication of EP4199016A4 publication Critical patent/EP4199016A4/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
    • H01F1/0551—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0552—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes with a protective layer
    • 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
    • H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
    • H01F1/0558—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together bonded together
    • 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
    • H01F1/0572—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 with a protective layer
    • 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
    • H01F1/0578—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 bonded together
    • 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
    • H01F1/059—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and Va elements, e.g. Sm2Fe17N2
    • 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
    • H01F41/0266—Moulding; Pressing

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
EP21827559.2A 2021-10-27 2021-11-05 Surface treatment method for rare earth magnetic powder, and injection molded rare earth magnetic material and preparation method therefor Pending EP4199016A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111258526.6A CN116031055A (en) 2021-10-27 2021-10-27 Surface treatment method of rare earth magnetic powder, injection molding rare earth magnetic material and preparation method thereof
PCT/CN2021/129091 WO2023070735A1 (en) 2021-10-27 2021-11-05 Surface treatment method for rare earth magnetic powder, and injection molded rare earth magnetic material and preparation method therefor

Publications (2)

Publication Number Publication Date
EP4199016A1 EP4199016A1 (en) 2023-06-21
EP4199016A4 true EP4199016A4 (en) 2024-02-21

Family

ID=85640888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21827559.2A Pending EP4199016A4 (en) 2021-10-27 2021-11-05 Surface treatment method for rare earth magnetic powder, and injection molded rare earth magnetic material and preparation method therefor

Country Status (3)

Country Link
EP (1) EP4199016A4 (en)
CN (1) CN116031055A (en)
WO (1) WO2023070735A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117747235A (en) * 2023-12-14 2024-03-22 宁夏君磁新材料科技有限公司 Magnetic elastomer and preparation method thereof
CN118126266A (en) * 2024-02-02 2024-06-04 湖北省烟草科学研究院 Phosphoric acid functionalized magnetic polymer and preparation method and application thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104637667B (en) * 2015-01-16 2018-02-09 浙江和也健康科技有限公司 A kind of anti-oxidation flexible stickup NdFeB magnetic stripes and preparation method thereof
JP2020023752A (en) * 2019-10-24 2020-02-13 日亜化学工業株式会社 Surface-treated rare earth-based magnetic powder and method of producing the same, and bond magnet and method of producing the same
US20210098161A1 (en) * 2019-09-27 2021-04-01 Nichia Corporation Method of producing magnetic powder

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2520450B2 (en) * 1988-06-02 1996-07-31 信越化学工業株式会社 Method for manufacturing corrosion resistant rare earth magnet
JP2002008911A (en) * 2000-06-22 2002-01-11 Nichia Chem Ind Ltd Surface treating method of rare earth-iron-nitrogen magnetic powder, and plastic magnet formed of the same
JP2003142308A (en) * 2001-11-07 2003-05-16 Sumitomo Metal Mining Co Ltd Composition for resin-bonded magnet, and resin-bonded magnet manufactured by using the same
CN1808648B (en) * 2006-01-19 2010-11-10 北京科技大学 Preparation method of rare-earth bonding magnet
CN102605361B (en) * 2011-01-24 2016-11-23 北京中科三环高技术股份有限公司 A kind of surface treatment method of sintered Nd-Fe-B magnetic material
CN106349686B (en) * 2015-07-16 2019-05-03 杭州海声科技有限公司 A kind of high-performance polyamide/samarium iron nitrogen magnetic composite and preparation method thereof
CN107603220A (en) * 2017-09-14 2018-01-19 横店集团东磁股份有限公司 A kind of PPS rare earth permanent magnets injection particle masterbatch and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104637667B (en) * 2015-01-16 2018-02-09 浙江和也健康科技有限公司 A kind of anti-oxidation flexible stickup NdFeB magnetic stripes and preparation method thereof
US20210098161A1 (en) * 2019-09-27 2021-04-01 Nichia Corporation Method of producing magnetic powder
JP2020023752A (en) * 2019-10-24 2020-02-13 日亜化学工業株式会社 Surface-treated rare earth-based magnetic powder and method of producing the same, and bond magnet and method of producing the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2023070735A1 *

Also Published As

Publication number Publication date
CN116031055A (en) 2023-04-28
WO2023070735A1 (en) 2023-05-04
EP4199016A1 (en) 2023-06-21

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