EP3355319A4 - Corrosion-resistant sintered neodymium-iron-boron magnet rich in lanthanum and cerium, and manufacturing method - Google Patents

Corrosion-resistant sintered neodymium-iron-boron magnet rich in lanthanum and cerium, and manufacturing method Download PDF

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Publication number
EP3355319A4
EP3355319A4 EP16874635.2A EP16874635A EP3355319A4 EP 3355319 A4 EP3355319 A4 EP 3355319A4 EP 16874635 A EP16874635 A EP 16874635A EP 3355319 A4 EP3355319 A4 EP 3355319A4
Authority
EP
European Patent Office
Prior art keywords
lanthanum
cerium
corrosion
iron
manufacturing
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.)
Granted
Application number
EP16874635.2A
Other languages
German (de)
French (fr)
Other versions
EP3355319B1 (en
EP3355319A1 (en
Inventor
Runfeng LI
Qiaoling CHEN
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.)
Zhejiang Dongyang Dmegc Rare Earth Magnet Co Ltd
Original Assignee
Zhejiang Dongyang Dmegc Rare Earth Magnet 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 Zhejiang Dongyang Dmegc Rare Earth Magnet Co Ltd filed Critical Zhejiang Dongyang Dmegc Rare Earth Magnet Co Ltd
Publication of EP3355319A1 publication Critical patent/EP3355319A1/en
Publication of EP3355319A4 publication Critical patent/EP3355319A4/en
Application granted granted Critical
Publication of EP3355319B1 publication Critical patent/EP3355319B1/en
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
    • 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
    • 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
    • B22F3/02—Compacting only
    • 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
    • B22F3/10—Sintering only
    • 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
    • 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
    • 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)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
EP16874635.2A 2015-12-16 2016-10-13 Corrosion-resistant sintered neodymium-iron-boron magnet rich in lanthanum and cerium, and manufacturing method Active EP3355319B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510943615.2A CN105427994B (en) 2015-12-16 2015-12-16 A kind of corrosion resistant rich lanthanum cerium Sintered NdFeB magnet and manufacture method
PCT/CN2016/101950 WO2017101577A1 (en) 2015-12-16 2016-10-13 Corrosion-resistant sintered neodymium-iron-boron magnet rich in lanthanum and cerium, and manufacturing method

Publications (3)

Publication Number Publication Date
EP3355319A1 EP3355319A1 (en) 2018-08-01
EP3355319A4 true EP3355319A4 (en) 2019-05-22
EP3355319B1 EP3355319B1 (en) 2022-02-23

Family

ID=55506139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16874635.2A Active EP3355319B1 (en) 2015-12-16 2016-10-13 Corrosion-resistant sintered neodymium-iron-boron magnet rich in lanthanum and cerium, and manufacturing method

Country Status (3)

Country Link
EP (1) EP3355319B1 (en)
CN (1) CN105427994B (en)
WO (1) WO2017101577A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105427994B (en) * 2015-12-16 2018-04-06 浙江东阳东磁稀土有限公司 A kind of corrosion resistant rich lanthanum cerium Sintered NdFeB magnet and manufacture method
CN106847457A (en) * 2017-01-09 2017-06-13 浙江大学 A kind of rare-earth permanent magnet and the method for preparing rare-earth permanent magnet
CN110257724B (en) * 2019-07-16 2020-05-22 宁德市星宇科技有限公司 Preparation method of neodymium-iron-boron magnet containing lanthanum and cerium
CN112562952A (en) * 2020-11-20 2021-03-26 宁波合力磁材技术有限公司 Neodymium-iron-boron permanent magnet material and preparation method thereof
DE102021113306A1 (en) 2021-05-21 2022-11-24 Technische Universität Darmstadt, Körperschaft des öffentlichen Rechts Process for producing a base material for a permanent magnet
CN113549813A (en) * 2021-07-22 2021-10-26 江西理工大学 Preparation method of main-auxiliary phase nanocrystalline high-abundance rare earth permanent magnet material
CN113921263A (en) * 2021-11-10 2022-01-11 赣州市钜磁科技有限公司 Preparation method of sintered neodymium-iron-boron permanent magnet material containing lanthanum and yttrium
CN114999759A (en) * 2022-07-06 2022-09-02 赣州鑫舟永磁材料有限公司 Method for improving low remanence temperature coefficient of rare earth permanent magnetic material and preparation process thereof
CN116313353B (en) * 2023-05-23 2023-08-29 包头天石稀土新材料有限责任公司 Neodymium-iron-boron magnet and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0187538A2 (en) * 1984-12-31 1986-07-16 TDK Corporation Permanent magnet and method for producing same
CN102220538A (en) * 2011-05-17 2011-10-19 南京理工大学 Sintered neodymium-iron-boron preparation method capable of improving intrinsic coercivity and anticorrosive performance
US20150248954A1 (en) * 2014-05-11 2015-09-03 Shenyang General Magnetic Co., Ltd High-performance NdFeB rare earth permanent magnet with composite main phase and manufacturing method thereof
DE102015105764A1 (en) * 2014-04-15 2015-10-15 Tdk Corporation PERMANENT MAGNET AND ENGINE

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
JP2002038245A (en) * 2000-07-27 2002-02-06 Hitachi Metals Ltd Rare earth alloy powder for rermanent magnet and method for manufacturing rare earth permanent magnet
CN101404196A (en) * 2008-07-14 2009-04-08 浙江升华强磁材料有限公司 Holmium-contained Nd-Fe-B rare earth permanent magnetic material and manufacturing method thereof
CN101630557A (en) * 2008-07-16 2010-01-20 宁波科宁达工业有限公司 Gadolinium-containing sintered rare earth permanent magnet alloy and preparation method thereof
CN101958171B (en) * 2010-04-14 2012-02-15 无锡南理工科技发展有限公司 Method for preparing corrosion-resistant sintered neodymium iron boron (NdFeB) magnet
CN102347126B (en) * 2010-07-30 2014-07-23 沈阳中北通磁科技股份有限公司 High-performance sintered neodymium-iron-boron (Nd-Fe-B) rare-earth permanent magnet material and manufacturing method thereof
CN102280240B (en) * 2011-08-23 2012-07-25 南京理工大学 Method for preparing sintered NdFeB with low dysprosium content and high performance
CN103824668B (en) * 2014-01-17 2017-01-11 浙江东阳东磁有限公司 Low-weight rare earth high-coercivity sintered neodymium-iron-boron magnet and production method thereof
CN104167272A (en) * 2014-07-28 2014-11-26 宁波韵升股份有限公司 Sintered neodymium iron boron magnet containing cerium and manufacturing method thereof
CN104851583B (en) * 2015-06-01 2017-01-11 四川省有色冶金研究院有限公司 Technology for sintering Nd-Fe-B electromagnet with rich-cerium rare earth content
CN105427994B (en) * 2015-12-16 2018-04-06 浙江东阳东磁稀土有限公司 A kind of corrosion resistant rich lanthanum cerium Sintered NdFeB magnet and manufacture method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0187538A2 (en) * 1984-12-31 1986-07-16 TDK Corporation Permanent magnet and method for producing same
CN102220538A (en) * 2011-05-17 2011-10-19 南京理工大学 Sintered neodymium-iron-boron preparation method capable of improving intrinsic coercivity and anticorrosive performance
DE102015105764A1 (en) * 2014-04-15 2015-10-15 Tdk Corporation PERMANENT MAGNET AND ENGINE
US20150248954A1 (en) * 2014-05-11 2015-09-03 Shenyang General Magnetic Co., Ltd High-performance NdFeB rare earth permanent magnet with composite main phase and manufacturing method thereof

Non-Patent Citations (1)

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Title
See also references of WO2017101577A1 *

Also Published As

Publication number Publication date
CN105427994B (en) 2018-04-06
WO2017101577A1 (en) 2017-06-22
EP3355319B1 (en) 2022-02-23
EP3355319A1 (en) 2018-08-01
CN105427994A (en) 2016-03-23

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