CN102959653B - 经表面改性的稀土类烧结磁铁的制造方法 - Google Patents
经表面改性的稀土类烧结磁铁的制造方法 Download PDFInfo
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- CN102959653B CN102959653B CN201180032708.XA CN201180032708A CN102959653B CN 102959653 B CN102959653 B CN 102959653B CN 201180032708 A CN201180032708 A CN 201180032708A CN 102959653 B CN102959653 B CN 102959653B
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- 238000000034 method Methods 0.000 title claims abstract description 101
- 238000012986 modification Methods 0.000 title claims abstract description 60
- 230000004048 modification Effects 0.000 title claims abstract description 60
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 46
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000001301 oxygen Substances 0.000 claims abstract description 50
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 50
- 230000008569 process Effects 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 17
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000000470 constituent Substances 0.000 claims description 8
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims description 8
- 238000010792 warming Methods 0.000 claims 3
- 238000005260 corrosion Methods 0.000 abstract description 34
- 230000007797 corrosion Effects 0.000 abstract description 34
- 230000000052 comparative effect Effects 0.000 description 26
- 230000001590 oxidative effect Effects 0.000 description 26
- 239000000956 alloy Substances 0.000 description 22
- 229910045601 alloy Inorganic materials 0.000 description 22
- 238000007669 thermal treatment Methods 0.000 description 22
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 18
- 239000001257 hydrogen Substances 0.000 description 18
- 229910052739 hydrogen Inorganic materials 0.000 description 18
- 238000012360 testing method Methods 0.000 description 15
- 239000000843 powder Substances 0.000 description 10
- 238000012545 processing Methods 0.000 description 8
- 238000010298 pulverizing process Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 235000012054 meals Nutrition 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000010924 continuous production Methods 0.000 description 5
- 235000013312 flour Nutrition 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000001069 Raman spectroscopy Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
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- 239000007791 liquid phase Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
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- 238000007493 shaping process Methods 0.000 description 2
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- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- -1 Co or Ni).This alloy Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005211 surface analysis Methods 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 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
- 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
- H01F41/005—Impregnating or encapsulating
-
- 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
- H01F41/026—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 protecting methods against environmental influences, e.g. oxygen, by surface treatment
-
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
-
- 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
-
- 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
-
- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hard Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
实施例1 | 实施例2 | 实施例3 | 实施例4 | 实施例5 | 比较例1 | 比较例2 | 比较例3 | 比较例4 | 参考例 | |
生锈个数 | 0 | 0 | 0 | 0 | 0 | 3 | 127 | 203 | 259 | 976 |
实施例6 | 实施例7 | 实施例8 | 比较例5 | |
生锈个数 | 0 | 0 | 0 | 5 |
Claims (6)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-149602 | 2010-06-30 | ||
JP2010149602 | 2010-06-30 | ||
PCT/JP2011/064865 WO2012002412A1 (ja) | 2010-06-30 | 2011-06-29 | 表面改質された希土類系焼結磁石の製造方法 |
Publications (2)
Publication Number | Publication Date |
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CN102959653A CN102959653A (zh) | 2013-03-06 |
CN102959653B true CN102959653B (zh) | 2016-02-10 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201180032708.XA Active CN102959653B (zh) | 2010-06-30 | 2011-06-29 | 经表面改性的稀土类烧结磁铁的制造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9558885B2 (zh) |
EP (1) | EP2590188A4 (zh) |
JP (1) | JP5900335B2 (zh) |
CN (1) | CN102959653B (zh) |
WO (1) | WO2012002412A1 (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103990794B (zh) * | 2014-06-10 | 2016-04-13 | 江苏巨鑫磁业有限公司 | 一种粘结钕铁硼快淬永磁粉残留结晶体氧化方法 |
CN107507687B (zh) * | 2016-06-14 | 2019-12-27 | 有研稀土新材料股份有限公司 | 高耐腐蚀性稀土永磁粉及其制备方法 |
CN107464684B (zh) * | 2017-08-30 | 2020-04-21 | 包头天和磁材科技股份有限公司 | 烧结磁体的处理方法 |
CN108022863B (zh) * | 2017-11-30 | 2020-07-28 | 上海大学 | 一种水蒸气氧化退火系统 |
JP7260304B2 (ja) * | 2019-01-11 | 2023-04-18 | トヨタ自動車株式会社 | 軟磁性部材の製造方法 |
CN113241230B (zh) * | 2021-04-01 | 2024-04-12 | 东阳市银海磁业有限公司 | 一种钕铁硼磁粉及其制备方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1537313A (zh) * | 2002-06-13 | 2004-10-13 | ס�����������ʽ���� | 稀土类烧结磁体及其制造方法 |
Family Cites Families (17)
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DE3915446A1 (de) * | 1989-05-12 | 1990-11-15 | Krupp Widia Gmbh | Ndfeb-magnet und verfahren zur oberflaechenpassivierung von ndfeb-magneten |
JP2844269B2 (ja) | 1991-04-26 | 1999-01-06 | 住友特殊金属株式会社 | 耐食性永久磁石及びその製造方法 |
EP0556751B1 (en) | 1992-02-15 | 1998-06-10 | Santoku Metal Industry Co., Ltd. | Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magnet |
JP2001160508A (ja) * | 1999-09-24 | 2001-06-12 | Sumitomo Special Metals Co Ltd | R−Fe−B系永久磁石およびその製造方法 |
JP4190743B2 (ja) | 2000-05-31 | 2008-12-03 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
JP4029095B2 (ja) | 2004-03-31 | 2008-01-09 | Tdk株式会社 | 希土類磁石及びその製造方法 |
JP3911514B2 (ja) | 2004-06-04 | 2007-05-09 | Tdk株式会社 | 希土類磁石及びその製造方法 |
JP2006156853A (ja) | 2004-11-30 | 2006-06-15 | Tdk Corp | 希土類磁石 |
JP4508065B2 (ja) | 2005-09-30 | 2010-07-21 | Tdk株式会社 | 希土類磁石 |
JP2007207936A (ja) | 2006-01-31 | 2007-08-16 | Tdk Corp | 希土類磁石 |
JP5098390B2 (ja) * | 2007-03-27 | 2012-12-12 | Tdk株式会社 | 希土類磁石 |
JP4873201B2 (ja) * | 2007-05-30 | 2012-02-08 | 信越化学工業株式会社 | 高耐食性希土類永久磁石の製造方法及び使用方法 |
EP2197007B1 (en) * | 2007-09-27 | 2018-03-21 | Hitachi Metals, Ltd. | Process for production of surface-modified rare earth sintered magnets and surface-modified rare earth sintered magnets |
JP5262903B2 (ja) * | 2009-03-26 | 2013-08-14 | 日立金属株式会社 | 表面改質された希土類系焼結磁石の製造方法 |
JP5326747B2 (ja) * | 2009-03-26 | 2013-10-30 | 日立金属株式会社 | R−Fe−B系焼結磁石の脱粒防止方法 |
JP5326746B2 (ja) * | 2009-03-26 | 2013-10-30 | 日立金属株式会社 | 表面改質されたR−Fe−B系焼結磁石の製造方法 |
JP5609209B2 (ja) * | 2009-09-29 | 2014-10-22 | 日立金属株式会社 | 表面改質された希土類系焼結磁石の製造方法 |
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2011
- 2011-06-29 CN CN201180032708.XA patent/CN102959653B/zh active Active
- 2011-06-29 US US13/807,111 patent/US9558885B2/en active Active
- 2011-06-29 WO PCT/JP2011/064865 patent/WO2012002412A1/ja active Application Filing
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JPWO2012002412A1 (ja) | 2013-08-29 |
EP2590188A4 (en) | 2017-04-12 |
US9558885B2 (en) | 2017-01-31 |
CN102959653A (zh) | 2013-03-06 |
EP2590188A1 (en) | 2013-05-08 |
WO2012002412A1 (ja) | 2012-01-05 |
US20130098509A1 (en) | 2013-04-25 |
JP5900335B2 (ja) | 2016-04-06 |
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