MX2007002717A - Deoxidisation of valve metal powders. - Google Patents

Deoxidisation of valve metal powders.

Info

Publication number
MX2007002717A
MX2007002717A MX2007002717A MX2007002717A MX2007002717A MX 2007002717 A MX2007002717 A MX 2007002717A MX 2007002717 A MX2007002717 A MX 2007002717A MX 2007002717 A MX2007002717 A MX 2007002717A MX 2007002717 A MX2007002717 A MX 2007002717A
Authority
MX
Mexico
Prior art keywords
valve metal
deoxidisation
metal powders
powders
relates
Prior art date
Application number
MX2007002717A
Other languages
Spanish (es)
Inventor
Josua Loffelholz
Ulrich Bartmann
Original Assignee
Starck H C Gmbh Co Kg
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
Application filed by Starck H C Gmbh Co Kg filed Critical Starck H C Gmbh Co Kg
Publication of MX2007002717A publication Critical patent/MX2007002717A/en

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

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 ??FV/g.
MX2007002717A 2004-09-08 2005-08-26 Deoxidisation of valve metal powders. MX2007002717A (en)

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
MX2007002717A true MX2007002717A (en) 2008-03-11

Family

ID=35445804

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2007002717A MX2007002717A (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 (5)

* 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
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)

* 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
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

Also Published As

Publication number Publication date
TW200624200A (en) 2006-07-16
RU2007112796A (en) 2008-10-20
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
BRPI0515172A (en) 2008-07-08
WO2006027119A2 (en) 2006-03-16
IL181782A0 (en) 2007-07-04

Similar Documents

Publication Publication Date Title
TW200604376A (en) Silver plating in electronics manufacture
MX2007007312A (en) Mild, structured, multiphase personal cleansing compositions.
TW200626261A (en) Process for the production of valve metal powders
EP1375690A4 (en) High strength titanium alloy and method for production thereof
MX2007002717A (en) Deoxidisation of valve metal powders.
WO2009029847A8 (en) Compositions and methods of using proislet peptides and analogs thereof
WO2008125091A3 (en) Metal foil
WO2010145842A3 (en) Implant made of a metallic material which can be resorbed by the body
TW200700071A (en) Novel use
HK1123829A1 (en) Alloys, bulk metallic glass, and methods of forming the same
WO2005111249A3 (en) Novel high-stregth, magnetic, nonostructured alloys
WO2007044180A3 (en) Improved toleration iron supplement compositions
WO2010122258A3 (en) Method for producing free powder particles of polyamide impregnated with at least one cosmetic or pharmaceutical agent, and free powder particles of polyamide having a content of at least 25 wt % of at least one cosmetic or pharmaceutical agent
MX2007013262A (en) Method of well treatment and construction.
EP1537929A4 (en) Metal powder for powder metallurgy and iron-based sintered compact
UA97942C2 (en) Solid pharmaceutical composition comprising valsartan
WO2006087629A3 (en) Rapidly disintegrating composition of olanzapine
TW200641158A (en) Mercury dispensing compositions
PL1747298T3 (en) Titanium/aluminium alloy
CA2503860A1 (en) Stabilised nadh/nadph compositions
WO2004080561A3 (en) Stabilized foam control compositions for lubricating compositions and their use
HK1125042A1 (en) Alcohol-in-oil type emulsion comprising a multivalent metal salt
WO2006023707A3 (en) 2-aminothiophenecarboxamides useful as cancer chemotherapeutic agents
WO2008142932A1 (en) Al or al alloy
TH75939B (en) Deoxidation of the lobe metal powder