JP4247977B2 - 希土類永久磁石の製造方法 - Google Patents
希土類永久磁石の製造方法 Download PDFInfo
- Publication number
- JP4247977B2 JP4247977B2 JP2003304477A JP2003304477A JP4247977B2 JP 4247977 B2 JP4247977 B2 JP 4247977B2 JP 2003304477 A JP2003304477 A JP 2003304477A JP 2003304477 A JP2003304477 A JP 2003304477A JP 4247977 B2 JP4247977 B2 JP 4247977B2
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- Japan
- Prior art keywords
- permanent magnet
- fine powder
- amount
- rare earth
- atmosphere
- 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.)
- Expired - Lifetime
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 150000002910 rare earth metals Chemical class 0.000 title claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 68
- 239000000843 powder Substances 0.000 claims description 64
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 50
- 239000001301 oxygen Substances 0.000 claims description 50
- 229910052760 oxygen Inorganic materials 0.000 claims description 50
- 239000012298 atmosphere Substances 0.000 claims description 45
- 238000010298 pulverizing process Methods 0.000 claims description 43
- 239000000956 alloy Substances 0.000 claims description 33
- 229910045601 alloy Inorganic materials 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 22
- 238000005245 sintering Methods 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 5
- 229910052723 transition metal Inorganic materials 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 32
- 239000000203 mixture Substances 0.000 description 14
- 230000007423 decrease Effects 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 230000032683 aging Effects 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 2
- 229910052777 Praseodymium Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003304477A JP4247977B2 (ja) | 2003-08-28 | 2003-08-28 | 希土類永久磁石の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003304477A JP4247977B2 (ja) | 2003-08-28 | 2003-08-28 | 希土類永久磁石の製造方法 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2005076045A JP2005076045A (ja) | 2005-03-24 |
| JP2005076045A5 JP2005076045A5 (https=) | 2006-10-12 |
| JP4247977B2 true JP4247977B2 (ja) | 2009-04-02 |
Family
ID=34408153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003304477A Expired - Lifetime JP4247977B2 (ja) | 2003-08-28 | 2003-08-28 | 希土類永久磁石の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4247977B2 (https=) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006283100A (ja) * | 2005-03-31 | 2006-10-19 | Tdk Corp | 希土類合金粉成形体の切断方法 |
| JP4640585B2 (ja) * | 2005-03-31 | 2011-03-02 | Ｔｄｋ株式会社 | 希土類磁石の製造方法 |
| CN107390477B (zh) | 2011-10-24 | 2020-02-14 | 株式会社尼康 | 照明系统、曝光装置及制造、图像形成、照明与曝光方法 |
-
2003
- 2003-08-28 JP JP2003304477A patent/JP4247977B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005076045A (ja) | 2005-03-24 |
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