WO2012048654A1 - 高耐蚀性烧结钕铁硼磁体及其制备方法 - Google Patents
高耐蚀性烧结钕铁硼磁体及其制备方法 Download PDFInfo
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- WO2012048654A1 WO2012048654A1 PCT/CN2011/080771 CN2011080771W WO2012048654A1 WO 2012048654 A1 WO2012048654 A1 WO 2012048654A1 CN 2011080771 W CN2011080771 W CN 2011080771W WO 2012048654 A1 WO2012048654 A1 WO 2012048654A1
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- WO
- WIPO (PCT)
- Prior art keywords
- magnet
- sintered
- alloy powder
- alloy
- phase alloy
- Prior art date
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 50
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 8
- 229910052692 Dysprosium Inorganic materials 0.000 claims abstract description 7
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 7
- 229910052771 Terbium Inorganic materials 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 7
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 7
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 6
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 6
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 34
- RZJQYRCNDBMIAG-UHFFFAOYSA-N [Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Zn].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn] Chemical class [Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Zn].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn] RZJQYRCNDBMIAG-UHFFFAOYSA-N 0.000 claims description 29
- 230000007797 corrosion Effects 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 28
- 238000005245 sintering Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 15
- 238000005496 tempering Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 4
- 239000011812 mixed powder Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 description 39
- 239000000956 alloy Substances 0.000 description 39
- 239000012071 phase Substances 0.000 description 14
- 239000003870 refractory metal Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 7
- 229910052761 rare earth metal Inorganic materials 0.000 description 6
- 230000004580 weight loss Effects 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 150000002910 rare earth metals Chemical class 0.000 description 5
- 238000000462 isostatic pressing Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000010902 jet-milling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical group [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- WXGGJJDBACQMHS-UHFFFAOYSA-N iron(2+);neodymium(3+);borate Chemical compound [Fe+2].[Nd+3].[O-]B([O-])[O-] WXGGJJDBACQMHS-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
-
- 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
- B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
-
- 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
-
- 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
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
-
- 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%
-
- 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
- H01F41/0273—Imparting anisotropy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
-
- 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
- B22F2201/00—Treatment under specific atmosphere
- B22F2201/20—Use of vacuum
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
-
- 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
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2011/080771 WO2012048654A1 (zh) | 2010-10-15 | 2011-10-14 | 高耐蚀性烧结钕铁硼磁体及其制备方法 |
EP11832051.4A EP2650886B1 (en) | 2010-10-15 | 2011-10-14 | Preparation method for high-corrosion resistant sintered ndfeb magnet |
KR1020137012267A KR20140045289A (ko) | 2010-10-15 | 2011-10-14 | 높은 내식성의 소결된 NdFeB 자석과 자석 준비 방법 |
US13/879,171 US20130335179A1 (en) | 2010-10-15 | 2011-10-14 | High-corrosion resistant sintered ndfeb magnet and preparation method therefor |
JP2013533083A JP2014500611A (ja) | 2010-10-15 | 2011-10-14 | 高耐食性焼結NdFeB磁石およびその調製方法 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201010515292.4 | 2010-10-15 | ||
CN201010515292.4A CN102456458B (zh) | 2010-10-15 | 2010-10-15 | 高耐蚀性烧结钕铁硼磁体及其制备方法 |
PCT/CN2011/080771 WO2012048654A1 (zh) | 2010-10-15 | 2011-10-14 | 高耐蚀性烧结钕铁硼磁体及其制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012048654A1 true WO2012048654A1 (zh) | 2012-04-19 |
Family
ID=45937905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2011/080771 WO2012048654A1 (zh) | 2010-10-15 | 2011-10-14 | 高耐蚀性烧结钕铁硼磁体及其制备方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20130335179A1 (zh) |
EP (1) | EP2650886B1 (zh) |
JP (1) | JP2014500611A (zh) |
KR (1) | KR20140045289A (zh) |
CN (1) | CN102456458B (zh) |
WO (1) | WO2012048654A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103480836A (zh) * | 2013-09-24 | 2014-01-01 | 宁波韵升股份有限公司 | 烧结钕铁硼粉料的造粒方法 |
Families Citing this family (21)
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CN103426578B (zh) * | 2012-05-22 | 2016-04-27 | 比亚迪股份有限公司 | 一种稀土永磁材料及其制备方法 |
CN102751064B (zh) * | 2012-07-30 | 2013-07-03 | 辽宁恒德磁业有限公司 | 纳米增韧钕铁硼磁性材料及制备方法 |
EP2722855A1 (en) * | 2012-10-19 | 2014-04-23 | Siemens Aktiengesellschaft | Nd-Fe-B permanent magnet without Dysprosium, rotor assembly, electromechanical transducer, wind turbine |
CN103065787B (zh) * | 2012-12-26 | 2015-10-28 | 宁波韵升股份有限公司 | 一种制备烧结钕铁硼磁体的方法 |
CN103903824B (zh) * | 2012-12-27 | 2017-08-04 | 比亚迪股份有限公司 | 一种稀土永磁材料及其制备方法 |
CN103489556B (zh) * | 2013-09-16 | 2015-12-09 | 南通保来利轴承有限公司 | 极异方环状烧结铁氧体转子磁石及其制备方法 |
CN103831435B (zh) * | 2014-01-27 | 2018-05-18 | 厦门钨业股份有限公司 | 磁体合金粉末与其磁体的制造方法 |
CN104700973B (zh) * | 2015-03-05 | 2017-07-04 | 内蒙古科技大学 | 一种由白云鄂博共伴生原矿混合稀土制成的稀土永磁体及其制备方法 |
CN106710765B (zh) * | 2015-07-21 | 2018-08-10 | 宁波科田磁业有限公司 | 一种高矫顽力烧结钕铁硼磁体及其制备方法 |
CN105118654A (zh) * | 2015-09-16 | 2015-12-02 | 安徽万磁电子有限公司 | 一种高热稳定性n48h烧结钕铁硼磁体的制备方法 |
CN105161282B (zh) * | 2015-10-08 | 2017-12-05 | 北京华太鑫鼎金属材料有限公司 | 钕铁硼磁体的烧结方法 |
CN105478787A (zh) * | 2015-12-03 | 2016-04-13 | 江苏巨鑫磁业有限公司 | 一种粘结钕铁硼NdFeB快淬永磁粉氧化方法 |
CN106920620A (zh) * | 2017-04-05 | 2017-07-04 | 北京京磁电工科技有限公司 | 钕铁硼磁体及其制备方法 |
CN107026002B (zh) * | 2017-04-14 | 2018-07-13 | 北京京磁电工科技有限公司 | 钕铁硼合金磁体的制备方法 |
CN110428947B (zh) * | 2019-07-31 | 2020-09-29 | 厦门钨业股份有限公司 | 一种稀土永磁材料及其原料组合物、制备方法和应用 |
CN112447350B (zh) * | 2019-08-29 | 2024-05-07 | 比亚迪股份有限公司 | 一种稀土永磁体及其制备方法 |
CN110473704B (zh) * | 2019-09-12 | 2021-05-07 | 安吉县宏铭磁性器材有限公司 | 一种薄型片式稀土永磁材料的制备方法 |
CN111636035B (zh) * | 2020-06-11 | 2022-03-01 | 福建省长汀金龙稀土有限公司 | 重稀土合金、钕铁硼永磁材料、原料和制备方法 |
CN112164571B (zh) * | 2020-08-17 | 2022-02-11 | 包头韵升强磁材料有限公司 | 一种烧结稀土永磁材料的制备方法 |
CN112420306A (zh) * | 2020-11-18 | 2021-02-26 | 宁波金鸡强磁股份有限公司 | 一种高性能的烧结钕铁硼磁环及其制备方法 |
CN112509775A (zh) * | 2020-12-15 | 2021-03-16 | 烟台首钢磁性材料股份有限公司 | 一种低量添加重稀土的钕铁硼磁体及其制备方法 |
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CN101266857A (zh) * | 2007-12-24 | 2008-09-17 | 中国石油大学(华东) | 纳米钛粉改性提高烧结钕铁硼矫顽力和工作温度方法 |
CN101320609A (zh) * | 2008-03-21 | 2008-12-10 | 浙江大学 | 晶界相重构的高耐蚀性烧结钕铁硼磁体及其制备方法 |
CN101499346A (zh) * | 2008-01-30 | 2009-08-05 | 浙江大学 | 一种高工作温度和高耐蚀性烧结钕铁硼永磁体 |
WO2010063143A1 (en) * | 2008-12-01 | 2010-06-10 | Zhejiang University | Modified nd-fe-b permanent magnet with high corrosion resistance |
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US5405455A (en) * | 1991-06-04 | 1995-04-11 | Shin-Etsu Chemical Co. Ltd. | Rare earth-based permanent magnet |
US5788782A (en) * | 1993-10-14 | 1998-08-04 | Sumitomo Special Metals Co., Ltd. | R-FE-B permanent magnet materials and process of producing the same |
CN1169165C (zh) * | 1998-10-14 | 2004-09-29 | 日立金属株式会社 | R-t-b系烧结型永磁体 |
JP3846835B2 (ja) * | 1998-10-14 | 2006-11-15 | 株式会社Neomax | R−t−b系焼結型永久磁石 |
JP3781094B2 (ja) * | 2000-02-15 | 2006-05-31 | 信越化学工業株式会社 | 耐食性希土類磁石 |
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- 2011-10-14 JP JP2013533083A patent/JP2014500611A/ja active Pending
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Also Published As
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JP2014500611A (ja) | 2014-01-09 |
EP2650886A1 (en) | 2013-10-16 |
KR20140045289A (ko) | 2014-04-16 |
EP2650886A4 (en) | 2018-01-10 |
CN102456458A (zh) | 2012-05-16 |
EP2650886B1 (en) | 2021-05-05 |
CN102456458B (zh) | 2017-02-08 |
US20130335179A1 (en) | 2013-12-19 |
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