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WO2006027119A3 - Deoxidisation of valve metal powders - Google Patents

Deoxidisation of valve metal powders Download PDF

Info

Publication number
WO2006027119A3
WO2006027119A3 PCT/EP2005/009230 EP2005009230W WO2006027119A3 WO 2006027119 A3 WO2006027119 A3 WO 2006027119A3 EP 2005009230 W EP2005009230 W EP 2005009230W WO 2006027119 A3 WO2006027119 A3 WO 2006027119A3
Authority
WO
WIPO (PCT)
Prior art keywords
valve metal
deoxidisation
metal powders
powders
relates
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.)
Ceased
Application number
PCT/EP2005/009230
Other languages
German (de)
French (fr)
Other versions
WO2006027119A2 (en
Inventor
Josua Loeffelholz
Ulrich Bartmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HC Starck GmbH
Original Assignee
HC Starck GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to US11/574,675 priority Critical patent/US20080011124A1/en
Application filed by HC Starck GmbH filed Critical HC Starck GmbH
Priority to EP05782917A priority patent/EP1793950A2/en
Priority to BRPI0515172-4A priority patent/BRPI0515172A/en
Priority to MX2007002717A priority patent/MX2007002717A/en
Priority to AU2005281918A priority patent/AU2005281918A1/en
Priority to JP2007530614A priority patent/JP2008512568A/en
Publication of WO2006027119A2 publication Critical patent/WO2006027119A2/en
Publication of WO2006027119A3 publication Critical patent/WO2006027119A3/en
Priority to IL181782A priority patent/IL181782A0/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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, 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)

Abstract

The invention relates to the deoxidisation of valve metal powders, in particular of niobium powders, tantalum powders or their alloys by treating the valve metal powder with calcium, barium, lanthanum, yttrium or cerium as the deoxidisation agent. The invention also relates to valve metal powders, which are characterised by a ratio of the sum of the sodium, potassium and magnesium content to the capacitance of less than 3 ppm/10,000 µFV/g.
PCT/EP2005/009230 2004-09-08 2005-08-26 Deoxidisation of valve metal powders Ceased WO2006027119A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US11/574,675 US20080011124A1 (en) 2004-09-08 2002-08-26 Deoxidation of Valve Metal Powders
EP05782917A EP1793950A2 (en) 2004-09-08 2005-08-26 Deoxidisation of valve metal powders
BRPI0515172-4A BRPI0515172A (en) 2004-09-08 2005-08-26 valve metal powder deoxidation
MX2007002717A MX2007002717A (en) 2004-09-08 2005-08-26 Deoxidisation of valve metal powders.
AU2005281918A AU2005281918A1 (en) 2004-09-08 2005-08-26 Deoxidisation of valve metal powders
JP2007530614A JP2008512568A (en) 2004-09-08 2005-08-26 Deoxygenation of valve metal powder
IL181782A IL181782A0 (en) 2004-09-08 2007-03-07 Deoxidisation of valve metal powders

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
DE102004043343.7 2004-09-08

Publications (2)

Publication Number Publication Date
WO2006027119A2 WO2006027119A2 (en) 2006-03-16
WO2006027119A3 true WO2006027119A3 (en) 2006-06-15

Family

ID=35445804

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/009230 Ceased WO2006027119A2 (en) 2004-09-08 2005-08-26 Deoxidisation of valve metal powders

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 (6)

* Cited by examiner, † Cited by third party
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
WO2015127613A1 (en) * 2014-02-27 2015-09-03 宁夏东方钽业股份有限公司 High-purity tantalum powder and preparation method therefor
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 method for preparing high melting point metal powder by multistage deep reduction
CN112828279B (en) * 2020-12-31 2022-08-12 昆明理工大学 A kind of metal powder gas phase deoxidation method
CN119287185B (en) * 2024-12-13 2025-03-14 河北睿阳稀有金属制品有限公司 A method for preparing low-oxygen high-purity metal hafnium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013182A1 (en) * 1990-02-22 1991-09-05 Rmi Titanium Company Deoxidation of a refractory metal
US20030110890A1 (en) * 2001-09-29 2003-06-19 Jilin He Process for the production of high surface area tantalum and/or niobium powders
US20030217619A1 (en) * 2002-05-21 2003-11-27 H.C. Starck, Inc. Tantalum-silicon and niobium-silicon substrates for capacitor anodes
US20030230167A1 (en) * 2002-03-12 2003-12-18 Josua Loeffelholz Valve metal powders and process for producing them
US20040028922A1 (en) * 2000-06-21 2004-02-12 Karlheinz Reichert Capacitor powder

Family Cites Families (18)

* Cited by examiner, † Cited by third party
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
JPH06104869B2 (en) * 1985-05-27 1994-12-21 マーティン，ウィリアム，レジナルド，バルマー Chemical method
US4722756A (en) * 1987-02-27 1988-02-02 Cabot Corp Method for deoxidizing tantalum material
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
WO2000067936A1 (en) * 1998-05-06 2000-11-16 H.C. Starck, Inc. Metal powders produced by the reduction of the oxides with gaseous magnesium
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
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
JP2003013115A (en) * 2001-06-28 2003-01-15 Sumitomo Metal Mining Co Ltd Method for producing niobium and / or tantalum 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
BR0204587A (en) * 2002-11-04 2004-06-29 Cbmm Sa High Surface Area Niobium and / or Tantalum Powder Production Process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013182A1 (en) * 1990-02-22 1991-09-05 Rmi Titanium Company Deoxidation of a refractory metal
US20040028922A1 (en) * 2000-06-21 2004-02-12 Karlheinz Reichert Capacitor powder
US20030110890A1 (en) * 2001-09-29 2003-06-19 Jilin He Process for the production of high surface area tantalum and/or niobium powders
US20030230167A1 (en) * 2002-03-12 2003-12-18 Josua Loeffelholz Valve metal powders and process for producing them
US20030217619A1 (en) * 2002-05-21 2003-11-27 H.C. Starck, Inc. Tantalum-silicon and niobium-silicon substrates for capacitor anodes

Also Published As

Publication number Publication date
KR20070098988A (en) 2007-10-08
SV2006002222A (en) 2006-05-25
US20080011124A1 (en) 2008-01-17
DE102004043343A1 (en) 2006-03-23
JP2008512568A (en) 2008-04-24
RU2010116085A (en) 2011-10-27
BRPI0515172A (en) 2008-07-08
RU2007112796A (en) 2008-10-20
IL181782A0 (en) 2007-07-04
AU2005281918A1 (en) 2006-03-16
EP1793950A2 (en) 2007-06-13
WO2006027119A2 (en) 2006-03-16
ZA200701902B (en) 2008-08-27
MX2007002717A (en) 2008-03-11
TW200624200A (en) 2006-07-16
RU2404881C2 (en) 2010-11-27
CN101052488A (en) 2007-10-10

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