CN101689416A - R-t-b系烧结磁体 - Google Patents
R-t-b系烧结磁体 Download PDFInfo
- Publication number
- CN101689416A CN101689416A CN200780052815A CN200780052815A CN101689416A CN 101689416 A CN101689416 A CN 101689416A CN 200780052815 A CN200780052815 A CN 200780052815A CN 200780052815 A CN200780052815 A CN 200780052815A CN 101689416 A CN101689416 A CN 101689416A
- Authority
- CN
- China
- Prior art keywords
- atom
- magnet
- rare earth
- coercive force
- sintered magnet
- 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 claims abstract description 40
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 17
- 150000003624 transition metals Chemical class 0.000 claims abstract description 17
- 229910052796 boron Inorganic materials 0.000 claims abstract description 11
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 6
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 11
- 229910052771 Terbium Inorganic materials 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052735 hafnium Inorganic materials 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 229910052718 tin Inorganic materials 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 229910052797 bismuth Inorganic materials 0.000 claims description 4
- 229910052738 indium Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- 229910052777 Praseodymium Inorganic materials 0.000 abstract description 8
- 229910052748 manganese Inorganic materials 0.000 abstract description 7
- 125000004429 atom Chemical group 0.000 description 71
- 238000000034 method Methods 0.000 description 41
- 230000000694 effects Effects 0.000 description 39
- 230000005291 magnetic effect Effects 0.000 description 37
- 238000005245 sintering Methods 0.000 description 35
- 239000000956 alloy Substances 0.000 description 27
- 229910045601 alloy Inorganic materials 0.000 description 27
- 239000012071 phase Substances 0.000 description 25
- 230000005415 magnetization Effects 0.000 description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- 239000001257 hydrogen Substances 0.000 description 14
- 229910052739 hydrogen Inorganic materials 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 239000000203 mixture Substances 0.000 description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 12
- 239000013078 crystal Substances 0.000 description 12
- 230000014509 gene expression Effects 0.000 description 12
- 150000002910 rare earth metals Chemical class 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 11
- 230000009467 reduction Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000000465 moulding Methods 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 238000012545 processing Methods 0.000 description 9
- 239000012298 atmosphere Substances 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- 238000010298 pulverizing process Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000003595 mist Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000004523 agglutinating effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000005347 demagnetization Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 235000012054 meals Nutrition 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000002050 diffraction method Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 230000005307 ferromagnetism Effects 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 238000004868 gas analysis Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 244000287680 Garcinia dulcis Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000011978 dissolution method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 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
-
- 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
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Description
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2007/059384 WO2008139559A1 (ja) | 2007-05-02 | 2007-05-02 | R-t-b系焼結磁石 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101689416A true CN101689416A (zh) | 2010-03-31 |
CN101689416B CN101689416B (zh) | 2012-10-03 |
Family
ID=39608107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2007800528152A Active CN101689416B (zh) | 2007-05-02 | 2007-05-02 | R-t-b系烧结磁体 |
Country Status (6)
Country | Link |
---|---|
US (2) | US20080274009A1 (zh) |
EP (1) | EP2034493B1 (zh) |
JP (1) | JP4103937B1 (zh) |
KR (1) | KR101378090B1 (zh) |
CN (1) | CN101689416B (zh) |
WO (1) | WO2008139559A1 (zh) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101819841A (zh) * | 2010-05-17 | 2010-09-01 | 上海交通大学 | 钕铁硼磁性材料及其制备方法 |
CN103153504A (zh) * | 2010-09-30 | 2013-06-12 | 昭和电工株式会社 | R-t-b系稀土类永久磁铁用合金材料、r-t-b系稀土类永久磁铁的制造方法和电动机 |
CN103189943A (zh) * | 2010-10-25 | 2013-07-03 | 丰田自动车株式会社 | 稀土磁体的制备方法 |
CN107710351A (zh) * | 2015-06-25 | 2018-02-16 | 日立金属株式会社 | R‑t‑b系烧结磁体及其制造方法 |
CN109473246A (zh) * | 2017-09-08 | 2019-03-15 | Tdk株式会社 | R-t-b系永久磁铁 |
CN109935432A (zh) * | 2017-12-05 | 2019-06-25 | Tdk株式会社 | R-t-b系永久磁铁 |
WO2024007808A1 (zh) | 2022-07-06 | 2024-01-11 | 烟台正海磁性材料股份有限公司 | 一种高矫顽力Nd-Fe-B系烧结磁体及其制备方法和应用 |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5274781B2 (ja) * | 2007-03-22 | 2013-08-28 | 昭和電工株式会社 | R−t−b系合金及びr−t−b系合金の製造方法、r−t−b系希土類永久磁石用微粉、r−t−b系希土類永久磁石 |
EP2302646B1 (en) * | 2008-06-13 | 2018-10-31 | Hitachi Metals, Ltd. | R-t-cu-mn-b type sintered magnet |
WO2010113465A1 (ja) * | 2009-03-31 | 2010-10-07 | 日立金属株式会社 | R-t-b-m系焼結磁石用合金及びその製造方法 |
US20110074530A1 (en) * | 2009-09-30 | 2011-03-31 | General Electric Company | Mixed rare-earth permanent magnet and method of fabrication |
JP5093215B2 (ja) * | 2009-11-26 | 2012-12-12 | トヨタ自動車株式会社 | 焼結希土類磁石の製造方法 |
JP2011258935A (ja) * | 2010-05-14 | 2011-12-22 | Shin Etsu Chem Co Ltd | R−t−b系希土類焼結磁石 |
JP5692231B2 (ja) * | 2010-07-16 | 2015-04-01 | トヨタ自動車株式会社 | 希土類磁石の製造方法、及び希土類磁石 |
US8572830B2 (en) | 2011-03-14 | 2013-11-05 | Apple Inc. | Method and apparatus for producing magnetic attachment system |
US9659260B2 (en) | 2011-03-15 | 2017-05-23 | Dan Caligor | Calendar based task and time management systems and methods |
US9261236B2 (en) * | 2012-09-24 | 2016-02-16 | Elwha Llc | Train propellant management systems and methods |
WO2014205002A2 (en) | 2013-06-17 | 2014-12-24 | Miha Zakotnik | Magnet recycling to create nd-fe-b magnets with improved or restored magnetic performance |
US9336932B1 (en) | 2014-08-15 | 2016-05-10 | Urban Mining Company | Grain boundary engineering |
US10428408B2 (en) | 2015-03-13 | 2019-10-01 | Tdk Corporation | R-T-B-based rare earth sintered magnet and alloy for R-T-B-based rare earth sintered magnet |
JP6672753B2 (ja) * | 2015-03-13 | 2020-03-25 | Tdk株式会社 | R−t−b系希土類焼結磁石及びr−t−b系希土類焼結磁石用合金 |
JP6488976B2 (ja) | 2015-10-07 | 2019-03-27 | Tdk株式会社 | R−t−b系焼結磁石 |
JP2019102707A (ja) * | 2017-12-05 | 2019-06-24 | Tdk株式会社 | R−t−b系永久磁石 |
JP7548688B2 (ja) * | 2019-03-19 | 2024-09-10 | 株式会社プロテリアル | R-t-b系焼結磁石 |
CN110828089B (zh) * | 2019-11-21 | 2021-03-26 | 厦门钨业股份有限公司 | 钕铁硼磁体材料、原料组合物及制备方法和应用 |
CN110797157B (zh) * | 2019-11-21 | 2021-06-04 | 厦门钨业股份有限公司 | 钕铁硼磁体材料、原料组合物及制备方法和应用 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1316375C (en) * | 1982-08-21 | 1993-04-20 | Masato Sagawa | Magnetic materials and permanent magnets |
US4792368A (en) * | 1982-08-21 | 1988-12-20 | Sumitomo Special Metals Co., Ltd. | Magnetic materials and permanent magnets |
JPS5989401A (ja) | 1982-11-15 | 1984-05-23 | Sumitomo Special Metals Co Ltd | 永久磁石 |
JPS6034005A (ja) * | 1983-08-04 | 1985-02-21 | Sumitomo Special Metals Co Ltd | 永久磁石 |
JPH066777B2 (ja) | 1985-07-24 | 1994-01-26 | 住友特殊金属株式会社 | 高性能永久磁石材料 |
EP0258609B1 (en) | 1986-07-23 | 1993-02-03 | Hitachi Metals, Ltd. | Permanent magnet with good thermal stability |
US4983232A (en) * | 1987-01-06 | 1991-01-08 | Hitachi Metals, Ltd. | Anisotropic magnetic powder and magnet thereof and method of producing same |
JPH02310395A (ja) * | 1989-05-26 | 1990-12-26 | Johoku Riken Kogyo:Kk | ネオジウム―鉄―ボロン系焼結磁石の防食方法 |
US5227247A (en) * | 1989-06-13 | 1993-07-13 | Sps Technologies, Inc. | Magnetic materials |
US5405455A (en) * | 1991-06-04 | 1995-04-11 | Shin-Etsu Chemical Co. Ltd. | Rare earth-based permanent magnet |
JP4023138B2 (ja) * | 2001-02-07 | 2007-12-19 | 日立金属株式会社 | 鉄基希土類合金粉末および鉄基希土類合金粉末を含むコンパウンドならびにそれを用いた永久磁石 |
US7014718B2 (en) * | 2001-09-03 | 2006-03-21 | Showa Denko K.K. | Rare earth magnet alloy ingot, manufacturing method for the same, R-T-B type magnet alloy ingot, R-T-B type magnet, R-T-B type bonded magnet, R-T-B type exchange spring magnet alloy ingot, R-T-B type exchange spring magnet, and R-T-B type exchange spring bonded magnet |
JP4389427B2 (ja) * | 2002-02-05 | 2009-12-24 | 日立金属株式会社 | 希土類−鉄−硼素系磁石用合金粉末を用いた焼結磁石 |
JP4702549B2 (ja) * | 2005-03-23 | 2011-06-15 | 信越化学工業株式会社 | 希土類永久磁石 |
TWI413136B (zh) * | 2005-03-23 | 2013-10-21 | Shinetsu Chemical Co | 稀土族永久磁體 |
TWI364765B (en) * | 2005-03-23 | 2012-05-21 | Shinetsu Chemical Co | Rare earth permanent magnet |
JP4656323B2 (ja) * | 2006-04-14 | 2011-03-23 | 信越化学工業株式会社 | 希土類永久磁石材料の製造方法 |
-
2007
- 2007-05-02 KR KR1020097023842A patent/KR101378090B1/ko active IP Right Grant
- 2007-05-02 EP EP07742819A patent/EP2034493B1/en not_active Revoked
- 2007-05-02 WO PCT/JP2007/059384 patent/WO2008139559A1/ja active Application Filing
- 2007-05-02 JP JP2007541537A patent/JP4103937B1/ja active Active
- 2007-05-02 CN CN2007800528152A patent/CN101689416B/zh active Active
-
2008
- 2008-06-04 US US12/132,738 patent/US20080274009A1/en not_active Abandoned
-
2009
- 2009-09-18 US US12/562,336 patent/US7789933B2/en active Active
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101819841A (zh) * | 2010-05-17 | 2010-09-01 | 上海交通大学 | 钕铁硼磁性材料及其制备方法 |
CN103153504A (zh) * | 2010-09-30 | 2013-06-12 | 昭和电工株式会社 | R-t-b系稀土类永久磁铁用合金材料、r-t-b系稀土类永久磁铁的制造方法和电动机 |
CN103153504B (zh) * | 2010-09-30 | 2015-04-29 | 昭和电工株式会社 | R-t-b系稀土类永久磁铁用合金材料、r-t-b系稀土类永久磁铁的制造方法和电动机 |
US9601979B2 (en) | 2010-09-30 | 2017-03-21 | Showa Denko K.K. | Alloy material for R-T-B system rare earth permanent magnet, method for producing R-T-B system rare earth permanent magnet, and motor |
CN103189943A (zh) * | 2010-10-25 | 2013-07-03 | 丰田自动车株式会社 | 稀土磁体的制备方法 |
CN107710351A (zh) * | 2015-06-25 | 2018-02-16 | 日立金属株式会社 | R‑t‑b系烧结磁体及其制造方法 |
CN107710351B (zh) * | 2015-06-25 | 2019-10-25 | 日立金属株式会社 | R-t-b系烧结磁体及其制造方法 |
CN109473246A (zh) * | 2017-09-08 | 2019-03-15 | Tdk株式会社 | R-t-b系永久磁铁 |
CN109935432A (zh) * | 2017-12-05 | 2019-06-25 | Tdk株式会社 | R-t-b系永久磁铁 |
CN109935432B (zh) * | 2017-12-05 | 2022-05-13 | Tdk株式会社 | R-t-b系永久磁铁 |
WO2024007808A1 (zh) | 2022-07-06 | 2024-01-11 | 烟台正海磁性材料股份有限公司 | 一种高矫顽力Nd-Fe-B系烧结磁体及其制备方法和应用 |
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US20080274009A1 (en) | 2008-11-06 |
EP2034493A4 (en) | 2009-07-22 |
WO2008139559A1 (ja) | 2008-11-20 |
EP2034493B1 (en) | 2012-12-05 |
US7789933B2 (en) | 2010-09-07 |
EP2034493A1 (en) | 2009-03-11 |
KR20100016577A (ko) | 2010-02-12 |
KR101378090B1 (ko) | 2014-03-27 |
JPWO2008139559A1 (ja) | 2010-07-29 |
JP4103937B1 (ja) | 2008-06-18 |
US20100008814A1 (en) | 2010-01-14 |
CN101689416B (zh) | 2012-10-03 |
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