CN1723511A - R-t-b系烧结磁铁及稀土类合金 - Google Patents
R-t-b系烧结磁铁及稀土类合金 Download PDFInfo
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- CN1723511A CN1723511A CN200480001869.2A CN200480001869A CN1723511A CN 1723511 A CN1723511 A CN 1723511A CN 200480001869 A CN200480001869 A CN 200480001869A CN 1723511 A CN1723511 A CN 1723511A
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 33
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 23
- 229910045601 alloy Inorganic materials 0.000 title claims description 31
- 239000000956 alloy Substances 0.000 title claims description 31
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 229910052742 iron Inorganic materials 0.000 claims abstract description 13
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 229910052771 Terbium Inorganic materials 0.000 claims abstract description 8
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 8
- 229910052738 indium Inorganic materials 0.000 claims abstract description 7
- 229910052718 tin Inorganic materials 0.000 claims abstract 2
- 229910052796 boron Inorganic materials 0.000 claims description 11
- 229910052692 Dysprosium Inorganic materials 0.000 abstract description 6
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 64
- 238000005245 sintering Methods 0.000 description 49
- 230000004907 flux Effects 0.000 description 33
- 238000000034 method Methods 0.000 description 32
- 235000013339 cereals Nutrition 0.000 description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 25
- 239000002245 particle Substances 0.000 description 17
- 239000000843 powder Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 13
- 238000004453 electron probe microanalysis Methods 0.000 description 12
- 230000009467 reduction Effects 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 238000009749 continuous casting Methods 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 229910017061 Fe Co Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000011978 dissolution method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- -1 fatty acid ester Chemical class 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 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
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- 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
- 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%
-
- 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
- C22C38/10—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
- C22C38/16—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
- 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
- H01F1/058—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IVa elements, e.g. Gd2Fe14C
-
- 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
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
-
- 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
-
- 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
- B22F2998/10—Processes characterised by the sequence of their steps
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2202/00—Physical properties
- C22C2202/02—Magnetic
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- 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)
Abstract
Description
试料 | Nd | Fe | Co | Al | Cu | Ga | M | B | O | C | N |
No.1 | 29.5 | 其余部分 | 0.88 | 0.15 | 0.10 | 0.00 | 0.00 | 0.95 | 0.39 | 0.05 | 0.010 |
No.2 | 29.7 | 其余部分 | 0.89 | 0.15 | 0.10 | 0.03 | Ti:0.10 | 0.95 | 0.40 | 0.05 | 0.008 |
No.3 | 29.6 | 其余部分 | 0.88 | 0.16 | 0.10 | 0.03 | V:0.10 | 0.94 | 0.40 | 0.06 | 0.009 |
No.4 | 29.6 | 其余部分 | 0.88 | 0.15 | 0.10 | 0.03 | Zr:0.10 | 0.95 | 0.38 | 0.05 | 0.008 |
No.5 | 29.7 | 其余部分 | 0.90 | 0.15 | 0.10 | 0.03 | Nb:0.10 | 0.95 | 0.39 | 0.05 | 0.010 |
No.6 | 29.7 | 其余部分 | 0.89 | 0.15 | 0.10 | 0.03 | Mo:0.10 | 0.95 | 0.39 | 0.06 | 0.010 |
试料 | 1040℃ | 1060℃ | 1080℃ | 1100℃ | 1120℃ | |||||
粒径 | Hk/HcJ | 粒径 | Hk/HcJ | 粒径 | Hk/HcJ | 粒径 | Hk/HcJ | 粒径 | Hk/HcJ | |
No.1 | ○ | 0.966 | ○ | 0.967 | ○ | 0.965 | × | 0.880 | × | 0.086 |
No.2 | ○ | 0.977 | ○ | 0.978 | ○ | 0.975 | ○ | 0.975 | × | 0.529 |
No.3 | ○ | 0.968 | ○ | 0.961 | ○ | 0.970 | ○ | 0.962 | × | 0.871 |
No.4 | ○ | 0.972 | ○ | 0.969 | ○ | 0.972 | ○ | 0.979 | ○ | 0.908 |
No.5 | ○ | 0.974 | ○ | 0.980 | ○ | 0.972 | ○ | 0.967 | × | 0.488 |
No.6 | ○ | 0.974 | ○ | 0.982 | ○ | 0.979 | ○ | 0.975 | × | 0.307 |
试料No. | Nd | Fe | Co | Al | Cu | Zr | Ga | B | O | C | N |
7 | 29.3 | 其余部分 | 0.88 | 0.16 | 0.09 | - | - | 1.02 | 0.22 | 0.06 | 0.011 |
8 | 29.4 | 其余部分 | 0.87 | 0.15 | 0.10 | - | - | 0.98 | 0.21 | 0.05 | 0.010 |
9 | 29.2 | 其余部分 | 0.88 | 0.15 | 0.09 | - | - | 0.96 | 0.22 | 0.06 | 0.010 |
10 | 29.2 | 其余部分 | 0.88 | 0.16 | 0.09 | - | - | 0.94 | 0.22 | 0.06 | 0.011 |
11 | 29.2 | 其余部分 | 0.89 | 0.16 | 0.10 | - | - | 0.90 | 0.21 | 0.07 | 0.010 |
12 | 29.3 | 其余部分 | 0.87 | 0.16 | 0.10 | 0.10 | - | 1.02 | 0.22 | 0.06 | 0.011 |
13 | 29.2 | 其余部分 | 0.90 | 0.15 | 0.10 | 0.08 | - | 0.99 | 0.22 | 0.06 | 0.010 |
14 | 29.1 | 其余部分 | 0.88 | 0.16 | 0.09 | 0.09 | - | 0.96 | 0.22 | 0.07 | 0.010 |
15 | 29.2 | 其余部分 | 0.89 | 0.16 | 0.09 | 0.09 | - | 0.93 | 0.21 | 0.06 | 0.011 |
16 | 29.2 | 其余部分 | 0.89 | 0.17 | 0.09 | 0.08 | - | 0.91 | 0.21 | 0.06 | 0.011 |
17 | 29.3 | 其余部分 | 0.88 | 0.12 | 0.10 | 0.09 | 0.04 | 0.97 | 0.22 | 0.05 | 0.009 |
18 | 29.3 | 其余部分 | 0.89 | 0.11 | 0.10 | 0.09 | 0.04 | 0.95 | 0.22 | 0.06 | 0.009 |
19 | 29.2 | 其余部分 | 0.89 | 0.14 | 0.10 | 0.08 | 0.04 | 0.93 | 0.21 | 0.06 | 0.010 |
20 | 29.3 | 其余部分 | 0.88 | 0.12 | 0.10 | 0.09 | 0.04 | 0.91 | 0.21 | 0.06 | 0.011 |
试料 | 集聚相有无 | 1020℃ | 1040℃ | 1060℃ | 1080℃ | |||||
B | Zr | 粒径 | Hk/HcJ | 粒径 | Hk/HcJ | 粒径 | Hk/HcJ | 粒径 | Hk/HcJ | |
No.7 | ○ | - | ○ | 0.967 | ○ | 0.970 | ○ | 0.903 | × | 0.328 |
No.8 | ○ | - | ○ | 0.970 | ○ | 0.972 | × | 0.790 | × | 0.120 |
No.9 | ○ | - | ○ | 0.968 | ○ | 0.975 | × | 0.689 | × | 0.093 |
No.10 | × | - | ○ | 0.965 | ○ | 0.973 | ○ | 0.897 | × | 0.241 |
No.11 | × | - | ○ | 0.970 | ○ | 0.973 | × | 0.648 | × | 0.109 |
No.12 | ○ | ○* | ○ | 0.968 | ○ | 0.972 | ○ | 0.972 | ○ | 0.964 |
No.13 | ○ | ○* | ○ | 0.970 | ○ | 0.975 | ○ | 0.973 | ○ | 0.953 |
No.14 | ○ | ○* | ○ | 0.972 | ○ | 0.973 | ○ | 0.971 | ○ | 0.933 |
No.15 | × | × | ○ | 0.968 | ○ | 0.973 | ○ | 0.974 | ○ | 0.940 |
No.16 | × | × | ○ | 0.968 | ○ | 0.974 | ○ | 0.974 | ○ | 0.934 |
No.17 | ○ | ○* | ○ | 0.970 | ○ | 0.974 | ○ | 0.972 | ○ | 0.935 |
No.18 | × | × | ○ | 0.969 | ○ | 0.975 | ○ | 0.973 | ○ | 0.920 |
No.19 | × | × | ○ | 0.967 | ○ | 0.973 | ○ | 0.974 | ○ | 0.915 |
No.20 | × | × | ○ | 0.968 | ○ | 0.972 | ○ | 0.973 | ○ | 0.924 |
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003292194 | 2003-08-12 | ||
JP292194/2003 | 2003-08-12 |
Publications (2)
Publication Number | Publication Date |
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CN1723511A true CN1723511A (zh) | 2006-01-18 |
CN100545959C CN100545959C (zh) | 2009-09-30 |
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CN200480001869.2A Expired - Lifetime CN100545959C (zh) | 2003-08-12 | 2004-08-10 | R-t-b系烧结磁铁及稀土类合金 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7534311B2 (zh) |
EP (1) | EP1662516B1 (zh) |
JP (1) | JP4605013B2 (zh) |
CN (1) | CN100545959C (zh) |
WO (1) | WO2005015580A1 (zh) |
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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 |
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- 2004-08-10 JP JP2005513043A patent/JP4605013B2/ja not_active Expired - Lifetime
- 2004-08-10 WO PCT/JP2004/011743 patent/WO2005015580A1/ja active Application Filing
- 2004-08-10 CN CN200480001869.2A patent/CN100545959C/zh not_active Expired - Lifetime
- 2004-08-10 EP EP04771704.6A patent/EP1662516B1/en not_active Expired - Lifetime
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CN101560628B (zh) * | 2008-04-17 | 2012-07-11 | 北京有色金属研究总院 | 一种稀土铁合金及其制备工艺 |
CN104715878A (zh) * | 2013-12-17 | 2015-06-17 | 现代自动车株式会社 | NdFeB永磁体和用于制造该永磁体的方法 |
CN104715878B (zh) * | 2013-12-17 | 2018-11-30 | 现代自动车株式会社 | NdFeB永磁体和用于制造该永磁体的方法 |
CN105976958A (zh) * | 2015-03-13 | 2016-09-28 | 昭和电工株式会社 | R-t-b系稀土类烧结磁铁和r-t-b系稀土类烧结磁铁用合金 |
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 |
WO2021128801A1 (zh) * | 2019-12-24 | 2021-07-01 | 厦门钨业股份有限公司 | 一种r-t-b系永磁材料及其制备方法和应用 |
Also Published As
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EP1662516A1 (en) | 2006-05-31 |
JPWO2005015580A1 (ja) | 2006-10-05 |
CN100545959C (zh) | 2009-09-30 |
US20060201585A1 (en) | 2006-09-14 |
US7534311B2 (en) | 2009-05-19 |
EP1662516B1 (en) | 2014-12-31 |
EP1662516A4 (en) | 2009-12-09 |
WO2005015580A1 (ja) | 2005-02-17 |
JP4605013B2 (ja) | 2011-01-05 |
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