JP5205277B2 - 永久磁石及び永久磁石の製造方法 - Google Patents
永久磁石及び永久磁石の製造方法 Download PDFInfo
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- JP5205277B2 JP5205277B2 JP2008550164A JP2008550164A JP5205277B2 JP 5205277 B2 JP5205277 B2 JP 5205277B2 JP 2008550164 A JP2008550164 A JP 2008550164A JP 2008550164 A JP2008550164 A JP 2008550164A JP 5205277 B2 JP5205277 B2 JP 5205277B2
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- 238000000034 method Methods 0.000 title claims description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 238000001704 evaporation Methods 0.000 claims description 115
- 239000000463 material Substances 0.000 claims description 111
- 230000008020 evaporation Effects 0.000 claims description 105
- 229910052771 Terbium Inorganic materials 0.000 claims description 58
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 56
- 230000005291 magnetic effect Effects 0.000 claims description 55
- 239000013078 crystal Substances 0.000 claims description 42
- 238000010438 heat treatment Methods 0.000 claims description 36
- 229910052751 metal Inorganic materials 0.000 claims description 33
- 239000002184 metal Substances 0.000 claims description 33
- 229910052779 Neodymium Inorganic materials 0.000 claims description 19
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 16
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 11
- 229910052733 gallium Inorganic materials 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 229910052796 boron Inorganic materials 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 5
- 229910052691 Erbium Inorganic materials 0.000 claims description 5
- 229910052693 Europium Inorganic materials 0.000 claims description 5
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 5
- 229910052689 Holmium Inorganic materials 0.000 claims description 5
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 5
- 229910052787 antimony Inorganic materials 0.000 claims description 5
- 229910052788 barium Inorganic materials 0.000 claims description 5
- 229910052790 beryllium Inorganic materials 0.000 claims description 5
- 229910052792 caesium Inorganic materials 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 229910052738 indium Inorganic materials 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 229910052712 strontium Inorganic materials 0.000 claims description 5
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 229910052718 tin Inorganic materials 0.000 claims description 5
- 229910052727 yttrium Inorganic materials 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 229910052775 Thulium Inorganic materials 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims 2
- 229910052719 titanium Inorganic materials 0.000 claims 2
- 239000012071 phase Substances 0.000 description 56
- 238000009792 diffusion process Methods 0.000 description 26
- 229910045601 alloy Inorganic materials 0.000 description 24
- 239000000956 alloy Substances 0.000 description 24
- FWQVINSGEXZQHB-UHFFFAOYSA-K trifluorodysprosium Chemical compound F[Dy](F)F FWQVINSGEXZQHB-UHFFFAOYSA-K 0.000 description 23
- 238000011282 treatment Methods 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 20
- 230000005496 eutectics Effects 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910001172 neodymium magnet Inorganic materials 0.000 description 13
- 239000000047 product Substances 0.000 description 13
- LKNRQYTYDPPUOX-UHFFFAOYSA-K trifluoroterbium Chemical compound F[Tb](F)F LKNRQYTYDPPUOX-UHFFFAOYSA-K 0.000 description 13
- 230000008569 process Effects 0.000 description 10
- 230000008018 melting Effects 0.000 description 8
- 238000002844 melting Methods 0.000 description 8
- 239000010409 thin film Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000004907 flux Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 5
- 229910002056 binary alloy Inorganic materials 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 229910052746 lanthanum Inorganic materials 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910001182 Mo alloy Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910000722 Didymium Inorganic materials 0.000 description 1
- 241000224487 Didymium Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- -1 chloride Then Chemical class 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005293 ferrimagnetic effect Effects 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
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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
-
- 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
-
- 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
- H01F1/06—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 in the form of particles, e.g. powder
- H01F1/08—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 in the form of particles, e.g. powder pressed, sintered, or bound 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Hard Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Description
Improvement of coercivity on thin Nd2Fe14B sintered permanent magnets(薄型Nd2Fe14B系焼結磁石における保磁力の向上)/ 朴起兌、東北大学 博士論文 平成12年3月23日)
12 真空チャンバ
2 箱体
21 箱部
22 蓋部
20 処理室
3 加熱手段
S 焼結磁石
M 永久磁石
V 蒸発材料
Claims (14)
- 処理室内に鉄−ホウ素−希土類系の焼結磁石を配置して所定温度に加熱すると共に、同一または他の処理室内に配置したDy及びTbの少なくとも一方を含有するフッ化物からなる蒸発材料を蒸発させ、この蒸発した蒸発材料を焼結磁石表面に付着させ、この付着した蒸発材料のDy、Tbの金属原子を焼結磁石の結晶粒界相に拡散させることを特徴とする永久磁石の製造方法。
- 前記蒸発材料は、Nd及びPrの少なくとも一方を含有するフッ化物をさらに含むことを特徴とする請求項1記載の永久磁石の製造方法。
- 前記蒸発材料は、Al、Ag、B、Ba、Be、C、Ca、Ce、Co、Cr、Cs、Cu、Dy、Er、Eu、Fe、Ga、Gd、Ge、Hf、Ho、In、K、La、Li、Lu、Mg、Mn、Mo、Na,Nb、Nd、Ni、P、Pd、Pr、Ru、S、Sb、Si、Sm、Sn、Sr、Ta、Tb、Tm、Ti、V、W、Y、Yb、Zn及びZrの中から選択された少なくとも1種を含むことを特徴とする請求項1または請求項2記載の永久磁石の製造方法。
- 前記焼結磁石と蒸発材料とを離間して配置したことを特徴とする請求項1乃至請求項3のいずれかに記載の永久磁石の製造方法。
- 前記処理室内に配置される前記蒸発材料の比表面積を変化させて一定温度下における蒸発量を増減し、蒸発した蒸発材料の焼結磁石表面への供給量を調節することを特徴とする請求項1乃至請求項4のいずれかに記載の永久磁石の製造方法。
- 前記成膜工程に先立って、処理室内に焼結磁石を配置した後、この処理室内を所定圧力に減圧して保持することを特徴とする請求項1乃至請求項5のいずれかに記載の永久磁石の製造方法。
- 前記処理室を所定圧力に減圧した後、処理室内を所定温度に加熱して保持することを特徴とする請求項6記載の永久磁石の製造方法。
- 前記成膜工程に先立って、プラズマによる前記焼結磁石表面のクリーニングを行うことを特徴とする請求項1乃至請求項7のいずれかに記載の永久磁石の製造方法。
- 前記焼結磁石の結晶粒界相に前記金属原子を拡散させた後、前記温度より低い所定温度で永久磁石の歪を除去する熱処理を施すことを特徴とする請求項1乃至請求項8のいずれかに記載の永久磁石の製造方法。
- 前記焼結磁石の結晶粒界相にDy及びTbの少なくとも一方を拡散させた後、磁場配向方向に直角な方向で所定の厚さに切断することを特徴とする請求項1乃至請求項9のいずれかに記載の永久磁石の製造方法。
- 鉄−ホウ素−希土類系の焼結磁石を有し、この焼結磁石を処理室内に配置して所定温度に加熱すると共に、同一または他の処理室内に配置したDy及びTbの少なくとも一方を含有するフッ化物からなる蒸発材料を蒸発させ、この蒸発した蒸発材料を焼結磁石表面に付着させ、この付着した蒸発材料のDy、Tbの金属原子を焼結磁石の結晶粒界相に拡散させてなることを特徴とする永久磁石。
- 前記蒸発材料は、Nd及びPrの少なくとも一方を含有するフッ化物をさらに含むことを特徴とする請求項11記載の永久磁石。
- 前記蒸発材料は、Al、Ag、B、Ba、Be、C、Ca、Ce、Co、Cr、Cs、Cu、Dy、Er、Eu、Fe、Ga、Gd、Ge、Hf、Ho、In、K、La、Li、Lu、Mg、Mn、Mo、Na,Nb、Nd、Ni、P、Pd、Pr、Ru、S、Sb、Si、Sm、Sn、Sr、Ta、Tb、Tm、Ti、V、W、Y、Yb、Zn及びZrの中から選択された少なくとも1種を含むことを特徴とする請求項11または請求項12記載の永久磁石。
- 前記焼結磁石の結晶粒界相にDy及びTbの少なくとも一方を拡散させた後、磁場配向方向に直角な方向で所定の厚さに切断してなることを特徴とする請求項11乃至請求項13のいずれかに記載の永久磁石。
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JP2008550164A JP5205277B2 (ja) | 2006-12-21 | 2007-12-19 | 永久磁石及び永久磁石の製造方法 |
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JP2006344779 | 2006-12-21 | ||
JP2006344779 | 2006-12-21 | ||
PCT/JP2007/074404 WO2008075709A1 (ja) | 2006-12-21 | 2007-12-19 | 永久磁石及び永久磁石の製造方法 |
JP2008550164A JP5205277B2 (ja) | 2006-12-21 | 2007-12-19 | 永久磁石及び永久磁石の製造方法 |
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JPWO2008075709A1 JPWO2008075709A1 (ja) | 2010-04-15 |
JP5205277B2 true JP5205277B2 (ja) | 2013-06-05 |
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Family Applications (1)
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JP2008550164A Expired - Fee Related JP5205277B2 (ja) | 2006-12-21 | 2007-12-19 | 永久磁石及び永久磁石の製造方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US8128759B2 (ja) |
JP (1) | JP5205277B2 (ja) |
KR (1) | KR101373272B1 (ja) |
CN (1) | CN101563737B (ja) |
DE (1) | DE112007003125T5 (ja) |
RU (1) | RU2427051C2 (ja) |
TW (1) | TWI469161B (ja) |
WO (1) | WO2008075709A1 (ja) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5262643B2 (ja) * | 2008-12-04 | 2013-08-14 | 信越化学工業株式会社 | Nd系焼結磁石及びその製造方法 |
EP2506270B1 (en) * | 2010-03-31 | 2014-12-03 | Nitto Denko Corporation | Permanent magnet and manufacturing method for permanent magnet |
JP5338956B2 (ja) | 2011-11-29 | 2013-11-13 | Tdk株式会社 | 希土類焼結磁石 |
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CN101563737A (zh) | 2009-10-21 |
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TW200842912A (en) | 2008-11-01 |
KR101373272B1 (ko) | 2014-03-11 |
US20100051140A1 (en) | 2010-03-04 |
CN101563737B (zh) | 2013-03-20 |
WO2008075709A1 (ja) | 2008-06-26 |
RU2427051C2 (ru) | 2011-08-20 |
US8128759B2 (en) | 2012-03-06 |
RU2009128059A (ru) | 2011-01-27 |
DE112007003125T5 (de) | 2009-11-05 |
TWI469161B (zh) | 2015-01-11 |
KR20090091202A (ko) | 2009-08-26 |
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