RU2404881C2 - Восстановление порошков вентильных металлов - Google Patents
Восстановление порошков вентильных металлов Download PDFInfo
- Publication number
- RU2404881C2 RU2404881C2 RU2007112796/02A RU2007112796A RU2404881C2 RU 2404881 C2 RU2404881 C2 RU 2404881C2 RU 2007112796/02 A RU2007112796/02 A RU 2007112796/02A RU 2007112796 A RU2007112796 A RU 2007112796A RU 2404881 C2 RU2404881 C2 RU 2404881C2
- Authority
- RU
- Russia
- Prior art keywords
- powder
- tantalum
- valve metal
- temperature
- lanthanum
- Prior art date
Links
- 239000000843 powder Substances 0.000 title claims abstract description 110
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 63
- 239000002184 metal Substances 0.000 title claims abstract description 63
- 230000004888 barrier function Effects 0.000 title abstract 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 20
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 11
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 11
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 11
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 6
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 22
- 150000002739 metals Chemical class 0.000 claims description 11
- 229910001257 Nb alloy Inorganic materials 0.000 claims description 2
- 229910001362 Ta alloys Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 abstract description 36
- 239000011777 magnesium Substances 0.000 abstract description 28
- 229910052708 sodium Inorganic materials 0.000 abstract description 27
- 229910052715 tantalum Inorganic materials 0.000 abstract description 26
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract description 23
- 229910052749 magnesium Inorganic materials 0.000 abstract description 21
- 229910052700 potassium Inorganic materials 0.000 abstract description 19
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 18
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 15
- 239000003990 capacitor Substances 0.000 abstract description 15
- 239000011591 potassium Substances 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 229910052758 niobium Inorganic materials 0.000 abstract description 9
- 239000010955 niobium Substances 0.000 abstract description 9
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 238000010327 methods by industry Methods 0.000 abstract 1
- 239000011575 calcium Substances 0.000 description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 22
- 229910052760 oxygen Inorganic materials 0.000 description 22
- 239000001301 oxygen Substances 0.000 description 22
- 239000002253 acid Substances 0.000 description 21
- 229910052791 calcium Inorganic materials 0.000 description 19
- 238000005406 washing Methods 0.000 description 19
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 18
- 239000000203 mixture Substances 0.000 description 18
- 239000012535 impurity Substances 0.000 description 16
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 14
- 238000001816 cooling Methods 0.000 description 12
- 239000011541 reaction mixture Substances 0.000 description 12
- 238000011084 recovery Methods 0.000 description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 238000002161 passivation Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 7
- 239000012300 argon atmosphere Substances 0.000 description 7
- 229910052788 barium Inorganic materials 0.000 description 7
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 7
- 239000000292 calcium oxide Substances 0.000 description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 7
- 229910017604 nitric acid Inorganic materials 0.000 description 7
- 238000005245 sintering Methods 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- 239000012153 distilled water Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 4
- 235000019799 monosodium phosphate Nutrition 0.000 description 4
- 239000001103 potassium chloride Substances 0.000 description 4
- 235000011164 potassium chloride Nutrition 0.000 description 4
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 description 4
- 239000011698 potassium fluoride Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000007784 solid electrolyte Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 101150096185 PAAS gene Proteins 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- 229910001026 inconel Inorganic materials 0.000 description 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 235000003270 potassium fluoride Nutrition 0.000 description 2
- 229910001936 tantalum oxide Inorganic materials 0.000 description 2
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- MYJRKFNXJBXFMJ-UHFFFAOYSA-N [Na].[Ta] Chemical compound [Na].[Ta] MYJRKFNXJBXFMJ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910001508 alkali metal halide Inorganic materials 0.000 description 1
- 150000008045 alkali metal halides Chemical class 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000000705 flame atomic absorption spectrometry Methods 0.000 description 1
- 150000004673 fluoride salts Chemical class 0.000 description 1
- -1 for example Chemical compound 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910001512 metal fluoride Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011833 salt mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/24—Obtaining niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/052—Sintered electrodes
- H01G9/0525—Powder therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/15—Solid electrolytic capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Powder Metallurgy (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004043343A DE102004043343A1 (de) | 2004-09-08 | 2004-09-08 | Desoxidation von Ventilmetallpulvern |
| DE102004043343.7 | 2004-09-08 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2010116085/02A Division RU2010116085A (ru) | 2004-09-08 | 2010-04-23 | Порошковый вентильный металл |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2007112796A RU2007112796A (ru) | 2008-10-20 |
| RU2404881C2 true RU2404881C2 (ru) | 2010-11-27 |
Family
ID=35445804
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2007112796/02A RU2404881C2 (ru) | 2004-09-08 | 2005-08-26 | Восстановление порошков вентильных металлов |
| RU2010116085/02A RU2010116085A (ru) | 2004-09-08 | 2010-04-23 | Порошковый вентильный металл |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2010116085/02A RU2010116085A (ru) | 2004-09-08 | 2010-04-23 | Порошковый вентильный металл |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US20080011124A1 (zh) |
| EP (1) | EP1793950A2 (zh) |
| JP (1) | JP2008512568A (zh) |
| KR (1) | KR20070098988A (zh) |
| CN (1) | CN101052488A (zh) |
| AU (1) | AU2005281918A1 (zh) |
| BR (1) | BRPI0515172A (zh) |
| DE (1) | DE102004043343A1 (zh) |
| IL (1) | IL181782A0 (zh) |
| MX (1) | MX2007002717A (zh) |
| RU (2) | RU2404881C2 (zh) |
| SV (1) | SV2006002222A (zh) |
| TW (1) | TW200624200A (zh) |
| WO (1) | WO2006027119A2 (zh) |
| ZA (1) | ZA200701902B (zh) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101574741B (zh) * | 2009-06-25 | 2011-05-18 | 宁夏东方钽业股份有限公司 | 电容器用钽粉的制备方法 |
| WO2015127613A1 (zh) * | 2014-02-27 | 2015-09-03 | 宁夏东方钽业股份有限公司 | 一种高纯钽粉及其制备方法 |
| FR3038623B1 (fr) * | 2015-07-10 | 2017-06-30 | Fives | Procede permettant de retirer les oxydes presents a la surface des nodules d'une poudre metallique avant l'utilisation de celle-ci dans un procede industriel |
| CN107236868B (zh) | 2017-05-23 | 2019-02-26 | 东北大学 | 一种多级深度还原制备高熔点金属粉的方法 |
| CN112828279B (zh) * | 2020-12-31 | 2022-08-12 | 昆明理工大学 | 一种金属粉末气相脱氧方法 |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL252366A (zh) * | 1958-06-13 | |||
| US4141720A (en) * | 1978-05-16 | 1979-02-27 | Nrc, Inc. | Tantalum powder reclaiming |
| WO1986007097A1 (en) * | 1985-05-27 | 1986-12-04 | The University Of Melbourne | Metal halide reduction with molten sodium/potassium alloy |
| US4722756A (en) * | 1987-02-27 | 1988-02-02 | Cabot Corp | Method for deoxidizing tantalum material |
| US5022935A (en) * | 1988-09-23 | 1991-06-11 | Rmi Titanium Company | Deoxidation of a refractory metal |
| US4923531A (en) * | 1988-09-23 | 1990-05-08 | Rmi Company | Deoxidation of titanium and similar metals using a deoxidant in a molten metal carrier |
| WO1991018121A1 (en) * | 1990-05-17 | 1991-11-28 | Cabot Corporation | Method of producing high surface area low metal impurity tantalum powder |
| US5448447A (en) * | 1993-04-26 | 1995-09-05 | Cabot Corporation | Process for making an improved tantalum powder and high capacitance low leakage electrode made therefrom |
| US5442978A (en) * | 1994-05-19 | 1995-08-22 | H. C. Starck, Inc. | Tantalum production via a reduction of K2TAF7, with diluent salt, with reducing agent provided in a fast series of slug additions |
| US5993513A (en) * | 1996-04-05 | 1999-11-30 | Cabot Corporation | Method for controlling the oxygen content in valve metal materials |
| US6051326A (en) * | 1997-04-26 | 2000-04-18 | Cabot Corporation | Valve metal compositions and method |
| DE19847012A1 (de) * | 1998-10-13 | 2000-04-20 | Starck H C Gmbh Co Kg | Niobpulver und Verfahren zu dessen Herstellung |
| US6558447B1 (en) * | 1999-05-05 | 2003-05-06 | H.C. Starck, Inc. | Metal powders produced by the reduction of the oxides with gaseous magnesium |
| DE19953946A1 (de) * | 1999-11-09 | 2001-05-10 | Starck H C Gmbh Co Kg | Kondensatorpulver |
| DE10030387A1 (de) * | 2000-06-21 | 2002-01-03 | Starck H C Gmbh Co Kg | Kondensatorpulver |
| US20030104923A1 (en) * | 2001-05-15 | 2003-06-05 | Showa Denko K.K. | Niobium oxide powder, niobium oxide sintered body and capacitor using the sintered body |
| CN1169643C (zh) * | 2001-09-29 | 2004-10-06 | 宁夏东方钽业股份有限公司 | 高比表面积钽粉和/或铌粉的制备方法 |
| JP3610942B2 (ja) * | 2001-10-12 | 2005-01-19 | 住友金属鉱山株式会社 | ニオブおよび／またはタンタルの粉末の製造法 |
| DE10307716B4 (de) * | 2002-03-12 | 2021-11-18 | Taniobis Gmbh | Ventilmetall-Pulver und Verfahren zu deren Herstellung |
| US6802884B2 (en) * | 2002-05-21 | 2004-10-12 | H.C. Starck, Inc. | Tantalum-silicon and niobium-silicon substrates for capacitor anodes |
| BR0204587A (pt) * | 2002-11-04 | 2004-06-29 | Cbmm Sa | Processo de produção de pó de nióbio e/ou de tântalo de elevada área superficial |
-
2002
- 2002-08-26 US US11/574,675 patent/US20080011124A1/en not_active Abandoned
-
2004
- 2004-09-08 DE DE102004043343A patent/DE102004043343A1/de not_active Withdrawn
-
2005
- 2005-08-26 MX MX2007002717A patent/MX2007002717A/es unknown
- 2005-08-26 WO PCT/EP2005/009230 patent/WO2006027119A2/de active Application Filing
- 2005-08-26 BR BRPI0515172-4A patent/BRPI0515172A/pt not_active IP Right Cessation
- 2005-08-26 KR KR1020077007633A patent/KR20070098988A/ko not_active Application Discontinuation
- 2005-08-26 AU AU2005281918A patent/AU2005281918A1/en not_active Abandoned
- 2005-08-26 CN CNA200580037624XA patent/CN101052488A/zh active Pending
- 2005-08-26 JP JP2007530614A patent/JP2008512568A/ja not_active Withdrawn
- 2005-08-26 RU RU2007112796/02A patent/RU2404881C2/ru not_active IP Right Cessation
- 2005-08-26 EP EP05782917A patent/EP1793950A2/de not_active Withdrawn
- 2005-09-07 TW TW094130621A patent/TW200624200A/zh unknown
- 2005-09-08 SV SV2005002222A patent/SV2006002222A/es unknown
-
2007
- 2007-03-05 ZA ZA200701902A patent/ZA200701902B/xx unknown
- 2007-03-07 IL IL181782A patent/IL181782A0/en unknown
-
2010
- 2010-04-23 RU RU2010116085/02A patent/RU2010116085A/ru not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| ТРИФОНОВ Д.Н. Редкоземельные элементы. - М.: издательство Академии наук СССР, 1960, с.87-88. СЕРЕБРЕННИКОВ В.В. Химия редкоземельных элементов. Том 1, книга первая. - Томск: издательство Томского университета, 1959, с.9. * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006027119A2 (de) | 2006-03-16 |
| AU2005281918A1 (en) | 2006-03-16 |
| EP1793950A2 (de) | 2007-06-13 |
| SV2006002222A (es) | 2006-05-25 |
| RU2007112796A (ru) | 2008-10-20 |
| MX2007002717A (es) | 2008-03-11 |
| ZA200701902B (en) | 2008-08-27 |
| DE102004043343A1 (de) | 2006-03-23 |
| BRPI0515172A (pt) | 2008-07-08 |
| US20080011124A1 (en) | 2008-01-17 |
| CN101052488A (zh) | 2007-10-10 |
| WO2006027119A3 (de) | 2006-06-15 |
| JP2008512568A (ja) | 2008-04-24 |
| IL181782A0 (en) | 2007-07-04 |
| TW200624200A (en) | 2006-07-16 |
| RU2010116085A (ru) | 2011-10-27 |
| KR20070098988A (ko) | 2007-10-08 |
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| Date | Code | Title | Description |
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| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20100827 |