ZA202005694B - A high-coercivity neodymium iron boron magnet and a preparation method thereof - Google Patents

A high-coercivity neodymium iron boron magnet and a preparation method thereof

Info

Publication number
ZA202005694B
ZA202005694B ZA2020/05694A ZA202005694A ZA202005694B ZA 202005694 B ZA202005694 B ZA 202005694B ZA 2020/05694 A ZA2020/05694 A ZA 2020/05694A ZA 202005694 A ZA202005694 A ZA 202005694A ZA 202005694 B ZA202005694 B ZA 202005694B
Authority
ZA
South Africa
Prior art keywords
preparation
iron boron
neodymium iron
boron magnet
coercivity neodymium
Prior art date
Application number
ZA2020/05694A
Inventor
Zhongwu Liu
Huixin Zeng
Qing Zhou
Hongya Yu
Xichun Zhong
Original Assignee
Univ South China Tech
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 Univ South China Tech filed Critical Univ South China Tech
Publication of ZA202005694B publication Critical patent/ZA202005694B/en

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/30—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes using a layer of powder or paste on the surface
    • 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
    • H01F41/0293—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
ZA2020/05694A 2018-03-05 2020-09-14 A high-coercivity neodymium iron boron magnet and a preparation method thereof ZA202005694B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810178869.3A CN108565105A (en) 2018-03-05 2018-03-05 A kind of high-coercive force neodymium iron boron magnetic body and preparation method thereof
PCT/CN2018/111930 WO2019169875A1 (en) 2018-03-05 2018-10-25 High-coercivity neodymium iron boron magnet and preparation method therefor

Publications (1)

Publication Number Publication Date
ZA202005694B true ZA202005694B (en) 2022-03-30

Family

ID=63532318

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA2020/05694A ZA202005694B (en) 2018-03-05 2020-09-14 A high-coercivity neodymium iron boron magnet and a preparation method thereof

Country Status (3)

Country Link
CN (1) CN108565105A (en)
WO (1) WO2019169875A1 (en)
ZA (1) ZA202005694B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108565105A (en) * 2018-03-05 2018-09-21 华南理工大学 A kind of high-coercive force neodymium iron boron magnetic body and preparation method thereof
CN109585113A (en) * 2018-11-30 2019-04-05 宁波韵升股份有限公司 A kind of preparation method of Sintered NdFeB magnet
CN109585106B (en) * 2018-12-18 2021-04-06 宁波铄腾新材料有限公司 Super-large rare earth permanent magnet and preparation method thereof
CN111599561B (en) * 2019-02-21 2021-12-14 有研稀土新材料股份有限公司 Neodymium-iron-boron magnet and preparation method thereof
CN110133029B (en) * 2019-03-29 2021-06-18 杭州电子科技大学 Method for designing grain boundary diffuser components in neodymium iron boron magnet with high flux
CN110767402B (en) * 2019-11-06 2021-02-26 有研稀土新材料股份有限公司 Anisotropic bonded magnetic powder and preparation method thereof
CN112820528A (en) * 2020-05-06 2021-05-18 廊坊京磁精密材料有限公司 Method for improving coercive force of sintered neodymium iron boron
CN112071545B (en) * 2020-09-01 2024-06-11 安徽省瀚海新材料股份有限公司 Surface treatment method for improving coercive force of neodymium iron boron substrate
CN113808839B (en) * 2021-08-23 2022-12-16 华南理工大学 Method for preparing high-coercivity neodymium-iron-boron magnet by utilizing macroscopic non-uniform diffusion
CN114864264B (en) * 2022-05-16 2023-06-30 安徽吉华新材料有限公司 Preparation process of low-weight rare earth high-coercivity rare earth neodymium-iron-boron permanent magnet
CN114964990B (en) * 2022-05-18 2024-10-11 中南大学 Preparation method of high-flux solid diffusion couple

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103366944B (en) * 2013-07-17 2016-08-10 宁波韵升股份有限公司 A kind of method improving Sintered NdFeB magnet performance
JP2016037611A (en) * 2014-08-05 2016-03-22 住友金属鉱山株式会社 Method for producing rare earth-iron-nitrogen-based magnet powder, and rare earth-iron-nitrogen-based magnet powder
JP6414597B2 (en) * 2014-09-11 2018-10-31 日立金属株式会社 Method for producing RTB-based sintered magnet
CN104505247A (en) * 2014-12-05 2015-04-08 华南理工大学 Solid diffusion process with capability of improving performances of Nd-Fe-B magnet
US10418171B2 (en) * 2014-12-12 2019-09-17 Hitachi Metals, Ltd. Production method for R—T—B-based sintered magnet
CN106783124A (en) * 2016-12-05 2017-05-31 华南理工大学 A kind of grain boundary decision Al Cu alloys improve the corrosion proof method of neodymium iron boron magnetic body
CN106887323A (en) * 2017-03-07 2017-06-23 北京科技大学 A kind of method that grain boundary decision prepares high-coercive force neodymium iron boron magnetic body
CN107424825A (en) * 2017-07-21 2017-12-01 烟台首钢磁性材料股份有限公司 A kind of neodymium iron boron magnetic body coercivity improves method
CN108565105A (en) * 2018-03-05 2018-09-21 华南理工大学 A kind of high-coercive force neodymium iron boron magnetic body and preparation method thereof

Also Published As

Publication number Publication date
WO2019169875A1 (en) 2019-09-12
CN108565105A (en) 2018-09-21

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