BRPI0515172A - valve metal powder deoxidation - Google Patents
valve metal powder deoxidationInfo
- Publication number
- BRPI0515172A BRPI0515172A BRPI0515172-4A BRPI0515172A BRPI0515172A BR PI0515172 A BRPI0515172 A BR PI0515172A BR PI0515172 A BRPI0515172 A BR PI0515172A BR PI0515172 A BRPI0515172 A BR PI0515172A
- Authority
- BR
- Brazil
- Prior art keywords
- valve metal
- metal powder
- powders
- deoxidation
- powder deoxidation
- Prior art date
Links
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 OR LIGHT-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 OR LIGHT-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
Abstract
DESOXIDAçãO DE PóS DE METAL DE VáLVULAS. A presente invenção refere-se à desoxidação de pós de metal de válvulas, particularmente pós de nióbio, pós de tântalo, ou suas ligas por tratamento de pó de metal de válvula com cálcio, bário, lantânio, ítrio ou cério como agente de desoxidação, assim como pós de metal de válvulas que se distinguem por uma proporção da soma dos teores de sódio, potássio e magnésio para a capacitância menor do que 3 ppm/10000 <109>FV/g.DEOXIDATION OF VALVE METAL POWDER. The present invention relates to the deoxidation of valve metal powders, particularly niobium powders, tantalum powders, or their alloys by treating valve metal powder with calcium, barium, lanthanum, yttrium or cerium as a deoxidizing agent, as well as valve metal powders which are distinguished by a ratio of the sum of sodium, potassium and magnesium contents to capacitance less than 3 ppm / 10000 <FV / g.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004043343A DE102004043343A1 (en) | 2004-09-08 | 2004-09-08 | Deoxidation of valve metal powders |
PCT/EP2005/009230 WO2006027119A2 (en) | 2004-09-08 | 2005-08-26 | Deoxidisation of valve metal powders |
Publications (1)
Publication Number | Publication Date |
---|---|
BRPI0515172A true BRPI0515172A (en) | 2008-07-08 |
Family
ID=35445804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0515172-4A BRPI0515172A (en) | 2004-09-08 | 2005-08-26 | valve metal powder deoxidation |
Country Status (15)
Country | Link |
---|---|
US (1) | US20080011124A1 (en) |
EP (1) | EP1793950A2 (en) |
JP (1) | JP2008512568A (en) |
KR (1) | KR20070098988A (en) |
CN (1) | CN101052488A (en) |
AU (1) | AU2005281918A1 (en) |
BR (1) | BRPI0515172A (en) |
DE (1) | DE102004043343A1 (en) |
IL (1) | IL181782A0 (en) |
MX (1) | MX2007002717A (en) |
RU (2) | RU2404881C2 (en) |
SV (1) | SV2006002222A (en) |
TW (1) | TW200624200A (en) |
WO (1) | WO2006027119A2 (en) |
ZA (1) | ZA200701902B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101574741B (en) * | 2009-06-25 | 2011-05-18 | 宁夏东方钽业股份有限公司 | Preparation method of tantalum powder for capacitor |
JP2017512897A (en) | 2014-02-27 | 2017-05-25 | ニンシア オリエント タンタル インダストリー カンパニー、 リミテッド | High purity tantalum powder and preparation method thereof |
FR3038623B1 (en) * | 2015-07-10 | 2017-06-30 | Fives | PROCESS FOR REMOVING OXIDES PRESENT AT THE SURFACE OF NODULES OF A METAL POWDER BEFORE USING THE SAME IN AN INDUSTRIAL PROCESS |
CN107236868B (en) | 2017-05-23 | 2019-02-26 | 东北大学 | A kind of method of multistage drastic reduction preparation high-melting metal powder |
CN112828279B (en) * | 2020-12-31 | 2022-08-12 | 昆明理工大学 | Metal powder gas phase deoxidation method |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL252366A (en) * | 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 |
RU2089350C1 (en) * | 1990-05-17 | 1997-09-10 | Кабот Корпорейшн | Method of production of 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 (en) * | 1998-10-13 | 2000-04-20 | Starck H C Gmbh Co Kg | Niobium powder and process for its manufacture |
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 (en) * | 1999-11-09 | 2001-05-10 | Starck H C Gmbh Co Kg | Capacitor powder |
DE10030387A1 (en) * | 2000-06-21 | 2002-01-03 | Starck H C Gmbh Co Kg | capacitor powder |
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 (en) * | 2001-09-29 | 2004-10-06 | 宁夏东方钽业股份有限公司 | Preparation method of high specific surface area tantalum powder and/or niobium powder |
JP3610942B2 (en) * | 2001-10-12 | 2005-01-19 | 住友金属鉱山株式会社 | Method for producing niobium and / or tantalum powder |
DE10307716B4 (en) * | 2002-03-12 | 2021-11-18 | Taniobis Gmbh | Valve metal powders and processes for their manufacture |
US6802884B2 (en) * | 2002-05-21 | 2004-10-12 | H.C. Starck, Inc. | Tantalum-silicon and niobium-silicon substrates for capacitor anodes |
BR0204587A (en) * | 2002-11-04 | 2004-06-29 | Cbmm Sa | High Surface Area Niobium and / or Tantalum Powder Production Process |
-
2002
- 2002-08-26 US US11/574,675 patent/US20080011124A1/en not_active Abandoned
-
2004
- 2004-09-08 DE DE102004043343A patent/DE102004043343A1/en not_active Withdrawn
-
2005
- 2005-08-26 EP EP05782917A patent/EP1793950A2/en not_active Withdrawn
- 2005-08-26 WO PCT/EP2005/009230 patent/WO2006027119A2/en active Application Filing
- 2005-08-26 JP JP2007530614A patent/JP2008512568A/en not_active Withdrawn
- 2005-08-26 KR KR1020077007633A patent/KR20070098988A/en not_active Application Discontinuation
- 2005-08-26 MX MX2007002717A patent/MX2007002717A/en unknown
- 2005-08-26 AU AU2005281918A patent/AU2005281918A1/en not_active Abandoned
- 2005-08-26 BR BRPI0515172-4A patent/BRPI0515172A/en not_active IP Right Cessation
- 2005-08-26 RU RU2007112796/02A patent/RU2404881C2/en not_active IP Right Cessation
- 2005-08-26 CN CNA200580037624XA patent/CN101052488A/en active Pending
- 2005-09-07 TW TW094130621A patent/TW200624200A/en unknown
- 2005-09-08 SV SV2005002222A patent/SV2006002222A/en unknown
-
2007
- 2007-03-05 ZA ZA200701902A patent/ZA200701902B/en unknown
- 2007-03-07 IL IL181782A patent/IL181782A0/en unknown
-
2010
- 2010-04-23 RU RU2010116085/02A patent/RU2010116085A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
TW200624200A (en) | 2006-07-16 |
RU2007112796A (en) | 2008-10-20 |
MX2007002717A (en) | 2008-03-11 |
DE102004043343A1 (en) | 2006-03-23 |
JP2008512568A (en) | 2008-04-24 |
RU2010116085A (en) | 2011-10-27 |
US20080011124A1 (en) | 2008-01-17 |
AU2005281918A1 (en) | 2006-03-16 |
SV2006002222A (en) | 2006-05-25 |
EP1793950A2 (en) | 2007-06-13 |
KR20070098988A (en) | 2007-10-08 |
RU2404881C2 (en) | 2010-11-27 |
ZA200701902B (en) | 2008-08-27 |
WO2006027119A3 (en) | 2006-06-15 |
CN101052488A (en) | 2007-10-10 |
WO2006027119A2 (en) | 2006-03-16 |
IL181782A0 (en) | 2007-07-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 6A ANUIDADE. |
|
B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2160 DE 29/05/2012. |