JP2002164239A5 - - Google Patents
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- Publication number
- JP2002164239A5 JP2002164239A5 JP2001279656A JP2001279656A JP2002164239A5 JP 2002164239 A5 JP2002164239 A5 JP 2002164239A5 JP 2001279656 A JP2001279656 A JP 2001279656A JP 2001279656 A JP2001279656 A JP 2001279656A JP 2002164239 A5 JP2002164239 A5 JP 2002164239A5
- Authority
- JP
- Japan
- Prior art keywords
- less
- magnet
- content
- rare earth
- amount
- 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.)
- Pending
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- 230000005291 magnetic effect Effects 0.000 description 24
- 229910052761 rare earth metal Inorganic materials 0.000 description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 16
- 239000001301 oxygen Substances 0.000 description 16
- 229910052760 oxygen Inorganic materials 0.000 description 16
- 230000004907 flux Effects 0.000 description 13
- 150000002910 rare earth metals Chemical class 0.000 description 13
- 239000002002 slurry Substances 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 239000000843 powder Substances 0.000 description 12
- 229910052777 Praseodymium Inorganic materials 0.000 description 11
- 238000002441 X-ray diffraction Methods 0.000 description 11
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- 229910052727 yttrium Inorganic materials 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 235000019198 oils Nutrition 0.000 description 8
- 239000012535 impurity Substances 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- -1 alcohols esters Chemical class 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 229910000765 intermetallic Inorganic materials 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 229910052733 gallium Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 description 3
- 239000008158 vegetable oil Substances 0.000 description 3
- 229910052692 Dysprosium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 150000007519 polyprotic acids Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 230000008707 rearrangement Effects 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical group 0.000 description 1
Images
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001279656A JP2002164239A (ja) | 2000-09-14 | 2001-09-14 | 希土類焼結磁石の製造方法およびリング磁石およびアークセグメント磁石 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000-280104 | 2000-09-14 | ||
| JP2000280104 | 2000-09-14 | ||
| JP2001279656A JP2002164239A (ja) | 2000-09-14 | 2001-09-14 | 希土類焼結磁石の製造方法およびリング磁石およびアークセグメント磁石 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002164239A JP2002164239A (ja) | 2002-06-07 |
| JP2002164239A5 true JP2002164239A5 (enExample) | 2007-03-01 |
Family
ID=26600003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001279656A Pending JP2002164239A (ja) | 2000-09-14 | 2001-09-14 | 希土類焼結磁石の製造方法およびリング磁石およびアークセグメント磁石 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002164239A (enExample) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004030000A1 (ja) * | 2002-09-30 | 2004-04-08 | Tdk Corporation | Ｒ−ｔ−ｂ系希土類永久磁石の製造方法 |
| US7311788B2 (en) | 2002-09-30 | 2007-12-25 | Tdk Corporation | R-T-B system rare earth permanent magnet |
| US7192493B2 (en) * | 2002-09-30 | 2007-03-20 | Tdk Corporation | R-T-B system rare earth permanent magnet and compound for magnet |
| CN101447331B (zh) * | 2002-10-08 | 2011-08-17 | 日立金属株式会社 | 烧结型R-Fe-B系永磁体的制造方法 |
| US7314531B2 (en) | 2003-03-28 | 2008-01-01 | Tdk Corporation | R-T-B system rare earth permanent magnet |
| JP2009225608A (ja) | 2008-03-18 | 2009-10-01 | Nitto Denko Corp | モータ用永久磁石及びモータ用永久磁石の製造方法 |
| JP5266522B2 (ja) * | 2008-04-15 | 2013-08-21 | 日東電工株式会社 | 永久磁石及び永久磁石の製造方法 |
| JP5266523B2 (ja) * | 2008-04-15 | 2013-08-21 | 日東電工株式会社 | 永久磁石及び永久磁石の製造方法 |
| JP5298180B2 (ja) * | 2011-11-24 | 2013-09-25 | 日東電工株式会社 | モータ用永久磁石及びモータ用永久磁石の製造方法 |
| US20180108464A1 (en) * | 2015-03-24 | 2018-04-19 | Nitto Denko Corporation | Sintered body for forming rare-earth magnet, and rare-earth sintered magnet |
| JP6848736B2 (ja) * | 2016-07-15 | 2021-03-24 | Tdk株式会社 | Ｒ−ｔ−ｂ系希土類永久磁石 |
| CN107610861A (zh) * | 2017-09-26 | 2018-01-19 | 北京京磁电工科技有限公司 | 钕铁硼磁体的高剩磁制备工艺 |
-
2001
- 2001-09-14 JP JP2001279656A patent/JP2002164239A/ja active Pending
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