CN105659336B - 一种含W的R‑Fe‑B‑Cu系烧结磁铁及急冷合金 - Google Patents
一种含W的R‑Fe‑B‑Cu系烧结磁铁及急冷合金 Download PDFInfo
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- CN105659336B CN105659336B CN201580002027.7A CN201580002027A CN105659336B CN 105659336 B CN105659336 B CN 105659336B CN 201580002027 A CN201580002027 A CN 201580002027A CN 105659336 B CN105659336 B CN 105659336B
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- 238000001816 cooling Methods 0.000 title claims abstract description 63
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 60
- 239000000956 alloy Substances 0.000 title claims abstract description 60
- 239000013078 crystal Substances 0.000 claims abstract description 67
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 24
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 17
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 17
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 91
- 239000000843 powder Substances 0.000 claims description 87
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- 229910052739 hydrogen Inorganic materials 0.000 claims description 45
- 239000001257 hydrogen Substances 0.000 claims description 45
- 239000002994 raw material Substances 0.000 claims description 38
- 230000000694 effects Effects 0.000 claims description 31
- 229910052802 copper Inorganic materials 0.000 claims description 28
- 229910052782 aluminium Inorganic materials 0.000 claims description 27
- 229910052742 iron Inorganic materials 0.000 claims description 25
- 239000002245 particle Substances 0.000 claims description 19
- 229910052721 tungsten Inorganic materials 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 15
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 12
- 229910052771 Terbium Inorganic materials 0.000 claims description 11
- 238000011282 treatment Methods 0.000 claims description 11
- 229910052758 niobium Inorganic materials 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 229910052726 zirconium Inorganic materials 0.000 claims description 8
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- 238000002425 crystallisation Methods 0.000 claims description 5
- 230000008025 crystallization Effects 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 239000011261 inert gas Substances 0.000 claims 1
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 49
- 239000007789 gas Substances 0.000 description 37
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 36
- JGHZJRVDZXSNKQ-UHFFFAOYSA-N methyl octanoate Chemical compound CCCCCCCC(=O)OC JGHZJRVDZXSNKQ-UHFFFAOYSA-N 0.000 description 36
- 229910052760 oxygen Inorganic materials 0.000 description 34
- 238000001514 detection method Methods 0.000 description 29
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- 238000002844 melting Methods 0.000 description 27
- 230000008018 melting Effects 0.000 description 27
- 238000011156 evaluation Methods 0.000 description 26
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- 239000001301 oxygen Substances 0.000 description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 19
- 238000012360 testing method Methods 0.000 description 18
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- 238000003801 milling Methods 0.000 description 14
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- 239000002184 metal Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 9
- 229910052796 boron Inorganic materials 0.000 description 8
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- 230000003647 oxidation Effects 0.000 description 8
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- 238000003723 Smelting Methods 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 238000005266 casting Methods 0.000 description 7
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- 150000002739 metals Chemical class 0.000 description 6
- 239000003870 refractory metal Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 229910052688 Gadolinium Inorganic materials 0.000 description 3
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 3
- 229940063655 aluminum stearate Drugs 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 3
- 229910001055 inconels 600 Inorganic materials 0.000 description 3
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 3
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
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- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- 208000018875 hypoxemia Diseases 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 229910052789 astatine Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 238000010894 electron beam technology Methods 0.000 description 1
- UFZOPKFMKMAWLU-UHFFFAOYSA-N ethoxy(methyl)phosphinic acid Chemical compound CCOP(C)(O)=O UFZOPKFMKMAWLU-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
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- 239000012299 nitrogen atmosphere Substances 0.000 description 1
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- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 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
- H01F1/0536—Alloys characterised by their composition containing rare earth metals 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
- C22C38/002—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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
-
- 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
- H01F41/0293—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)
- Hard Magnetic Materials (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims (14)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2014101269265 | 2014-03-31 | ||
CN201410126926.5A CN104952574A (zh) | 2014-03-31 | 2014-03-31 | 一种含W的Nd-Fe-B-Cu系烧结磁铁 |
PCT/CN2015/075512 WO2015149685A1 (zh) | 2014-03-31 | 2015-03-31 | 一种含W的R‐Fe‐B‐Cu系烧结磁铁及急冷合金 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105659336A CN105659336A (zh) | 2016-06-08 |
CN105659336B true CN105659336B (zh) | 2018-01-23 |
Family
ID=54167172
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410126926.5A Pending CN104952574A (zh) | 2014-03-31 | 2014-03-31 | 一种含W的Nd-Fe-B-Cu系烧结磁铁 |
CN201580002027.7A Active CN105659336B (zh) | 2014-03-31 | 2015-03-31 | 一种含W的R‑Fe‑B‑Cu系烧结磁铁及急冷合金 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410126926.5A Pending CN104952574A (zh) | 2014-03-31 | 2014-03-31 | 一种含W的Nd-Fe-B-Cu系烧结磁铁 |
Country Status (8)
Country | Link |
---|---|
US (1) | US10381139B2 (zh) |
EP (1) | EP3128521B8 (zh) |
JP (1) | JP6528046B2 (zh) |
CN (2) | CN104952574A (zh) |
BR (1) | BR112016013421B8 (zh) |
DK (1) | DK3128521T3 (zh) |
ES (1) | ES2742188T3 (zh) |
WO (1) | WO2015149685A1 (zh) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10614938B2 (en) * | 2014-03-31 | 2020-04-07 | Xiamen Tungsten Co., Ltd. | W-containing R—Fe—B—Cu sintered magnet and quenching alloy |
JP6520789B2 (ja) * | 2015-03-31 | 2019-05-29 | 信越化学工業株式会社 | R−Fe−B系焼結磁石及びその製造方法 |
US10468168B2 (en) * | 2015-04-02 | 2019-11-05 | Xiamen Tungsten Co., Ltd. | Rare-earth magnet comprising holmium and tungsten |
CN106448985A (zh) * | 2015-09-28 | 2017-02-22 | 厦门钨业股份有限公司 | 一种复合含有Pr和W的R‑Fe‑B系稀土烧结磁铁 |
JP6645219B2 (ja) * | 2016-02-01 | 2020-02-14 | Tdk株式会社 | R−t−b系焼結磁石用合金、及びr−t−b系焼結磁石 |
JP6724865B2 (ja) | 2016-06-20 | 2020-07-15 | 信越化学工業株式会社 | R−Fe−B系焼結磁石及びその製造方法 |
JP6614084B2 (ja) | 2016-09-26 | 2019-12-04 | 信越化学工業株式会社 | R−Fe−B系焼結磁石の製造方法 |
CN110021466A (zh) * | 2017-12-28 | 2019-07-16 | 厦门钨业股份有限公司 | 一种R-Fe-B-Cu-Al系烧结磁铁及其制备方法 |
CN109192426B (zh) * | 2018-09-05 | 2020-03-10 | 福建省长汀金龙稀土有限公司 | 含有Tb和Hf的R-Fe-B系烧结磁体及其制备方法 |
CN110976887B (zh) * | 2019-12-17 | 2022-02-11 | 哈尔滨东大高新材料股份有限公司 | AgWC(T)/CuC(X)触头材料及其制备方法 |
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US5223047A (en) * | 1986-07-23 | 1993-06-29 | Hitachi Metals, Ltd. | Permanent magnet with good thermal stability |
DE3750661T2 (de) * | 1986-07-23 | 1995-04-06 | Hitachi Metals Ltd | Dauermagnet mit guter thermischer Stabilität. |
JPH01103805A (ja) * | 1987-07-30 | 1989-04-20 | Tdk Corp | 永久磁石 |
JP2720040B2 (ja) | 1988-02-26 | 1998-02-25 | 住友特殊金属株式会社 | 焼結永久磁石材料とその製造方法 |
JP3932143B2 (ja) | 1992-02-21 | 2007-06-20 | Tdk株式会社 | 磁石の製造方法 |
JP2746818B2 (ja) | 1993-06-02 | 1998-05-06 | 信越化学工業株式会社 | 希土類焼結永久磁石の製造方法 |
JPH0745412A (ja) | 1993-07-28 | 1995-02-14 | Sumitomo Special Metals Co Ltd | R−Fe−B系永久磁石材料 |
DE69707185T2 (de) | 1996-04-10 | 2002-06-27 | Showa Denko Kk | Gusslegierung für die Herstellung von Dauermagneten mit seltenen Erden und Verfahren zur Herstellung dieser Legierung und dieser Dauermagneten |
DE69938811D1 (de) | 1998-12-11 | 2008-07-10 | Shinetsu Chemical Co | Herstellungsverfahen eines Seltenerd-Dauermagnets |
JP3712581B2 (ja) | 1999-02-15 | 2005-11-02 | 信越化学工業株式会社 | 永久磁石用合金薄帯および焼結永久磁石 |
DE19945942C2 (de) | 1999-09-24 | 2003-07-17 | Vacuumschmelze Gmbh | Verfahren zur Herstellung von Dauermagneten aus einer borarmen Nd-Fe-B-Legierung |
US6506265B2 (en) | 2000-06-13 | 2003-01-14 | Shin-Etsu Chemical Co., Ltd. | R-Fe-B base permanent magnet materials |
JP4371188B2 (ja) | 2000-08-22 | 2009-11-25 | 信越化学工業株式会社 | 高比電気抵抗性希土類磁石及びその製造方法 |
CN1220220C (zh) | 2001-09-24 | 2005-09-21 | 北京有色金属研究总院 | 钕铁硼合金快冷厚带及其制造方法 |
US20050098239A1 (en) | 2003-10-15 | 2005-05-12 | Neomax Co., Ltd. | R-T-B based permanent magnet material alloy and R-T-B based permanent magnet |
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BR112016013421A2 (zh) | 2020-06-16 |
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WO2015149685A1 (zh) | 2015-10-08 |
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