CN111599562A - 一种钕铁硼永磁材料、其原料组合物、其制备方法和应用 - Google Patents
一种钕铁硼永磁材料、其原料组合物、其制备方法和应用 Download PDFInfo
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- CN111599562A CN111599562A CN202010478497.3A CN202010478497A CN111599562A CN 111599562 A CN111599562 A CN 111599562A CN 202010478497 A CN202010478497 A CN 202010478497A CN 111599562 A CN111599562 A CN 111599562A
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- China
- Prior art keywords
- mas
- permanent magnet
- iron boron
- neodymium iron
- boron permanent
- 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.)
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- 229910001172 neodymium magnet Inorganic materials 0.000 title claims abstract description 201
- 239000000463 material Substances 0.000 title claims abstract description 190
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 title claims abstract description 188
- 239000000203 mixture Substances 0.000 title claims abstract description 77
- 239000002994 raw material Substances 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 81
- 239000000956 alloy Substances 0.000 claims description 81
- 239000011159 matrix material Substances 0.000 claims description 59
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 49
- 239000000696 magnetic material Substances 0.000 claims description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 36
- 150000002910 rare earth metals Chemical class 0.000 claims description 27
- 239000000843 powder Substances 0.000 claims description 20
- 239000001257 hydrogen Substances 0.000 claims description 17
- 229910052739 hydrogen Inorganic materials 0.000 claims description 17
- 238000005245 sintering Methods 0.000 claims description 17
- 229910052719 titanium Inorganic materials 0.000 claims description 17
- 229910052726 zirconium Inorganic materials 0.000 claims description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 16
- 238000003723 Smelting Methods 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 16
- 229910052733 gallium Inorganic materials 0.000 claims description 16
- 238000005324 grain boundary diffusion Methods 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 9
- 229910052735 hafnium Inorganic materials 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims description 6
- AADMRFXTAGXWSE-UHFFFAOYSA-N monoacetoxyscirpenol Natural products CC(=O)OC1C(O)C2OC3(C)C=C(C)CCC3(CO)C1(C)C24CO4 AADMRFXTAGXWSE-UHFFFAOYSA-N 0.000 claims description 6
- 238000006356 dehydrogenation reaction Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010902 jet-milling Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 15
- 229910052760 oxygen Inorganic materials 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052692 Dysprosium Inorganic materials 0.000 description 5
- 229910052771 Terbium Inorganic materials 0.000 description 5
- 239000012298 atmosphere Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 229910052691 Erbium Inorganic materials 0.000 description 4
- 229910052688 Gadolinium Inorganic materials 0.000 description 4
- 229910052689 Holmium Inorganic materials 0.000 description 4
- 229910052765 Lutetium Inorganic materials 0.000 description 4
- 229910052775 Thulium Inorganic materials 0.000 description 4
- 229910052769 Ytterbium Inorganic materials 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 229910052706 scandium Inorganic materials 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 229910052747 lanthanoid Inorganic materials 0.000 description 3
- 150000002602 lanthanoids Chemical class 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000003870 refractory metal Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004453 electron probe microanalysis Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000005289 physical deposition Methods 0.000 description 1
- 238000002294 plasma sputter deposition Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- FWQVINSGEXZQHB-UHFFFAOYSA-K trifluorodysprosium Chemical compound F[Dy](F)F FWQVINSGEXZQHB-UHFFFAOYSA-K 0.000 description 1
- LKNRQYTYDPPUOX-UHFFFAOYSA-K trifluoroterbium Chemical compound F[Tb](F)F LKNRQYTYDPPUOX-UHFFFAOYSA-K 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Images
Classifications
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- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
- H01F1/0576—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 pressed, e.g. hot working
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- 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
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Hard Magnetic Materials (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
Claims (10)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN202010478497.3A CN111599562B (zh) | 2020-05-29 | 2020-05-29 | 一种钕铁硼永磁材料、其原料组合物、其制备方法和应用 |
JP2022548091A JP7418599B2 (ja) | 2020-05-29 | 2021-05-21 | ネオジム鉄ホウ素永久磁石材料、その原料組成物、その製造方法、並びに応用 |
PCT/CN2021/095068 WO2021238783A1 (zh) | 2020-05-29 | 2021-05-21 | 一种钕铁硼永磁材料、其原料组合物、其制备方法和应用 |
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CN202010478497.3A CN111599562B (zh) | 2020-05-29 | 2020-05-29 | 一种钕铁硼永磁材料、其原料组合物、其制备方法和应用 |
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CN111599562A true CN111599562A (zh) | 2020-08-28 |
CN111599562B CN111599562B (zh) | 2024-03-29 |
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JP (1) | JP7418599B2 (zh) |
CN (1) | CN111599562B (zh) |
WO (1) | WO2021238783A1 (zh) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112992463A (zh) * | 2021-03-17 | 2021-06-18 | 福建省长汀金龙稀土有限公司 | 一种r-t-b磁体及其制备方法 |
CN113674943A (zh) * | 2021-07-29 | 2021-11-19 | 福建省长汀金龙稀土有限公司 | 一种钕铁硼磁体材料及其制备方法和应用 |
CN113674944A (zh) * | 2021-07-29 | 2021-11-19 | 福建省长汀金龙稀土有限公司 | 一种钕铁硼磁体材料及其制备方法和应用 |
WO2021238783A1 (zh) * | 2020-05-29 | 2021-12-02 | 厦门钨业股份有限公司 | 一种钕铁硼永磁材料、其原料组合物、其制备方法和应用 |
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JP2012023192A (ja) * | 2010-07-14 | 2012-02-02 | Toyota Motor Corp | 角形性に優れた希土類磁石の製造方法 |
EP3182423A1 (en) * | 2015-12-18 | 2017-06-21 | JL Mag Rare-Earth Co., Ltd. | Neodymium iron boron magnet and preparation method thereof |
CN106910586A (zh) * | 2017-05-03 | 2017-06-30 | 南京信息工程大学 | 一种磁性复合材料及制备方法 |
CN107610858A (zh) * | 2017-08-18 | 2018-01-19 | 浙江中元磁业股份有限公司 | 一种含铈量高的低成本n35钕铁硼磁体及其烧结方法 |
CN111180159A (zh) * | 2019-12-31 | 2020-05-19 | 厦门钨业股份有限公司 | 一种钕铁硼永磁材料、制备方法、应用 |
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JP3951099B2 (ja) | 2000-06-13 | 2007-08-01 | 信越化学工業株式会社 | R−Fe−B系希土類永久磁石材料 |
WO2011030387A1 (ja) * | 2009-09-11 | 2011-03-17 | 株式会社 東芝 | 磁石材料、永久磁石、およびそれを用いたモータと発電機 |
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CN110993234B (zh) * | 2019-12-24 | 2021-06-25 | 厦门钨业股份有限公司 | 高Cu高Al的钕铁硼磁体及其制备方法 |
CN111161949B (zh) | 2019-12-31 | 2022-02-11 | 浙江大学 | 一种YCe共掺的纳米晶稀土永磁体及其制备方法 |
CN111081443B (zh) | 2020-01-07 | 2023-05-09 | 福建省长汀金龙稀土有限公司 | 一种r-t-b系永磁材料及其制备方法和应用 |
CN111599562B (zh) * | 2020-05-29 | 2024-03-29 | 福建省金龙稀土股份有限公司 | 一种钕铁硼永磁材料、其原料组合物、其制备方法和应用 |
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2020
- 2020-05-29 CN CN202010478497.3A patent/CN111599562B/zh active Active
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2021
- 2021-05-21 WO PCT/CN2021/095068 patent/WO2021238783A1/zh active Application Filing
- 2021-05-21 JP JP2022548091A patent/JP7418599B2/ja active Active
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JP2012023192A (ja) * | 2010-07-14 | 2012-02-02 | Toyota Motor Corp | 角形性に優れた希土類磁石の製造方法 |
EP3182423A1 (en) * | 2015-12-18 | 2017-06-21 | JL Mag Rare-Earth Co., Ltd. | Neodymium iron boron magnet and preparation method thereof |
CN106910586A (zh) * | 2017-05-03 | 2017-06-30 | 南京信息工程大学 | 一种磁性复合材料及制备方法 |
CN107610858A (zh) * | 2017-08-18 | 2018-01-19 | 浙江中元磁业股份有限公司 | 一种含铈量高的低成本n35钕铁硼磁体及其烧结方法 |
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