CN110070986A - 一种R-Fe-B系稀土烧结磁铁的晶界扩散方法、HRE扩散源及其制备方法 - Google Patents
一种R-Fe-B系稀土烧结磁铁的晶界扩散方法、HRE扩散源及其制备方法 Download PDFInfo
- Publication number
- CN110070986A CN110070986A CN201910408822.6A CN201910408822A CN110070986A CN 110070986 A CN110070986 A CN 110070986A CN 201910408822 A CN201910408822 A CN 201910408822A CN 110070986 A CN110070986 A CN 110070986A
- Authority
- CN
- China
- Prior art keywords
- hre
- sintered magnet
- earth sintered
- system rare
- grain boundary
- 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
Links
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 99
- 238000009792 diffusion process Methods 0.000 title claims abstract description 95
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 72
- 238000001035 drying Methods 0.000 claims abstract description 50
- -1 HRE compound Chemical class 0.000 claims abstract description 39
- 239000012298 atmosphere Substances 0.000 claims abstract description 29
- 238000005245 sintering Methods 0.000 claims abstract description 13
- 229910052692 Dysprosium Inorganic materials 0.000 claims abstract description 8
- 229910052771 Terbium Inorganic materials 0.000 claims abstract description 8
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 5
- 229910052689 Holmium Inorganic materials 0.000 claims abstract description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 37
- 238000010438 heat treatment Methods 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 21
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 19
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 229920002678 cellulose Polymers 0.000 claims description 12
- 239000001913 cellulose Substances 0.000 claims description 12
- 235000019441 ethanol Nutrition 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000003960 organic solvent Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 8
- 229910002651 NO3 Inorganic materials 0.000 claims description 7
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 5
- VDRSDNINOSAWIV-UHFFFAOYSA-N [F].[Si] Chemical compound [F].[Si] VDRSDNINOSAWIV-UHFFFAOYSA-N 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- 229910052738 indium Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 229910052582 BN Inorganic materials 0.000 claims description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 2
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 229910052732 germanium Inorganic materials 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 229910052702 rhenium Inorganic materials 0.000 claims description 2
- 229910052706 scandium Inorganic materials 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 1
- 229910052789 astatine Inorganic materials 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 229910052731 fluorine Inorganic materials 0.000 claims 1
- 239000011737 fluorine Substances 0.000 claims 1
- 229910052749 magnesium Inorganic materials 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 230000005389 magnetism Effects 0.000 abstract description 15
- 230000000052 comparative effect Effects 0.000 description 44
- 238000001514 detection method Methods 0.000 description 24
- 239000007789 gas Substances 0.000 description 20
- 239000000243 solution Substances 0.000 description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 238000010586 diagram Methods 0.000 description 14
- 229910004299 TbF3 Inorganic materials 0.000 description 12
- 238000012545 processing Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 229960004756 ethanol Drugs 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 8
- 238000011282 treatment Methods 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 238000000643 oven drying Methods 0.000 description 7
- 238000013021 overheating Methods 0.000 description 7
- 238000010926 purge Methods 0.000 description 7
- 238000005488 sandblasting Methods 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 229960000935 dehydrated alcohol Drugs 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 238000000227 grinding Methods 0.000 description 6
- 229910001172 neodymium magnet Inorganic materials 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000003801 milling Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- NLQFUUYNQFMIJW-UHFFFAOYSA-N dysprosium(III) oxide Inorganic materials O=[Dy]O[Dy]=O NLQFUUYNQFMIJW-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
- 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
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims (25)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2016108500512 | 2016-09-26 | ||
CN201610850051.2A CN107871602A (zh) | 2016-09-26 | 2016-09-26 | 一种R‑Fe‑B系稀土烧结磁铁的晶界扩散方法、HRE扩散源及其制备方法 |
PCT/CN2017/102605 WO2018054314A1 (zh) | 2016-09-26 | 2017-09-21 | 一种R-Fe-B系稀土烧结磁铁的晶界扩散方法、HRE扩散源及其制备方法 |
CN201780002786.2A CN108140482B (zh) | 2016-09-26 | 2017-09-21 | 一种R-Fe-B系稀土烧结磁铁的晶界扩散方法、HRE扩散源及其制备方法 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201780002786.2A Division CN108140482B (zh) | 2016-09-26 | 2017-09-21 | 一种R-Fe-B系稀土烧结磁铁的晶界扩散方法、HRE扩散源及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN110070986A true CN110070986A (zh) | 2019-07-30 |
CN110070986B CN110070986B (zh) | 2022-06-24 |
Family
ID=61690714
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
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CN201610850051.2A Pending CN107871602A (zh) | 2016-09-26 | 2016-09-26 | 一种R‑Fe‑B系稀土烧结磁铁的晶界扩散方法、HRE扩散源及其制备方法 |
CN201910408822.6A Active CN110070986B (zh) | 2016-09-26 | 2017-09-21 | 一种R-Fe-B系稀土烧结磁铁的晶界扩散方法、HRE扩散源及其制备方法 |
CN201780002786.2A Active CN108140482B (zh) | 2016-09-26 | 2017-09-21 | 一种R-Fe-B系稀土烧结磁铁的晶界扩散方法、HRE扩散源及其制备方法 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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CN201610850051.2A Pending CN107871602A (zh) | 2016-09-26 | 2016-09-26 | 一种R‑Fe‑B系稀土烧结磁铁的晶界扩散方法、HRE扩散源及其制备方法 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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CN201780002786.2A Active CN108140482B (zh) | 2016-09-26 | 2017-09-21 | 一种R-Fe-B系稀土烧结磁铁的晶界扩散方法、HRE扩散源及其制备方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US11501914B2 (zh) |
EP (1) | EP3438997B1 (zh) |
JP (1) | JP6803462B2 (zh) |
KR (1) | KR102138243B1 (zh) |
CN (3) | CN107871602A (zh) |
TW (1) | TWI657146B (zh) |
WO (1) | WO2018054314A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112908672A (zh) * | 2020-01-21 | 2021-06-04 | 福建省长汀金龙稀土有限公司 | 一种R-Fe-B系稀土烧结磁体的晶界扩散处理方法 |
CN114141464A (zh) * | 2020-09-03 | 2022-03-04 | 轻能量电子商务科技有限公司 | 磁能材料组成结构 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107871602A (zh) | 2016-09-26 | 2018-04-03 | 厦门钨业股份有限公司 | 一种R‑Fe‑B系稀土烧结磁铁的晶界扩散方法、HRE扩散源及其制备方法 |
KR102045399B1 (ko) * | 2018-04-30 | 2019-11-15 | 성림첨단산업(주) | 희토류 영구자석의 제조방법 |
US20190378651A1 (en) * | 2018-06-08 | 2019-12-12 | Shenzhen Radimag Magnets Co.,Ltd | Permeating treatment method for radially oriented sintered magnet, magnet, and composition for magnet permeation |
CN108831655B (zh) | 2018-07-20 | 2020-02-07 | 烟台首钢磁性材料股份有限公司 | 一种提高钕铁硼烧结永磁体矫顽力的方法 |
JP7293772B2 (ja) * | 2019-03-20 | 2023-06-20 | Tdk株式会社 | R-t-b系永久磁石 |
US20200303100A1 (en) * | 2019-03-22 | 2020-09-24 | Tdk Corporation | R-t-b based permanent magnet |
JP7251264B2 (ja) * | 2019-03-28 | 2023-04-04 | Tdk株式会社 | R‐t‐b系永久磁石の製造方法 |
CN109903986A (zh) * | 2019-04-01 | 2019-06-18 | 中钢集团南京新材料研究院有限公司 | 一种提高钕铁硼磁体矫顽力的方法 |
CN110415965A (zh) * | 2019-08-19 | 2019-11-05 | 安徽大地熊新材料股份有限公司 | 一种提高烧结稀土-铁-硼磁体矫顽力的方法 |
US20220328245A1 (en) * | 2020-01-21 | 2022-10-13 | Xiamen Tungsten Co., Ltd. | R-Fe-B SINTERED MAGNET AND GRAIN BOUNDARY DIFFUSION TREATMENT METHOD THEREOF |
CN111210962B (zh) * | 2020-01-31 | 2021-05-07 | 厦门钨业股份有限公司 | 一种含SmFeN或SmFeC的烧结钕铁硼及其制备方法 |
CN111599565B (zh) * | 2020-06-01 | 2022-04-29 | 福建省长汀金龙稀土有限公司 | 钕铁硼磁体材料、原料组合物及其制备方法和应用 |
CN114420439B (zh) * | 2022-03-02 | 2022-12-27 | 浙江大学 | 高温氧化处理提高高丰度稀土永磁抗蚀性的方法 |
CN115910521A (zh) * | 2023-01-04 | 2023-04-04 | 苏州磁亿电子科技有限公司 | 一种薄膜状hre扩散源及制备方法、钕铁硼磁体制备方法 |
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JP2006303433A (ja) * | 2005-03-23 | 2006-11-02 | Shin Etsu Chem Co Ltd | 希土類永久磁石 |
CN1898757A (zh) * | 2004-10-19 | 2007-01-17 | 信越化学工业株式会社 | 稀土永磁材料的制备方法 |
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CN110070986B (zh) | 2022-06-24 |
EP3438997A4 (en) | 2019-11-13 |
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US20200027656A1 (en) | 2020-01-23 |
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