BRPI0515172A - desoxidação de pós de metal de válvulas - Google Patents

desoxidação de pós de metal de válvulas

Info

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
Application number
BRPI0515172-4A
Other languages
English (en)
Inventor
Josua Loeffelholz
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 BRPI0515172A publication Critical patent/BRPI0515172A/pt

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

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.
BRPI0515172-4A 2004-09-08 2005-08-26 desoxidação de pós de metal de válvulas BRPI0515172A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004043343A DE102004043343A1 (de) 2004-09-08 2004-09-08 Desoxidation von Ventilmetallpulvern
PCT/EP2005/009230 WO2006027119A2 (de) 2004-09-08 2005-08-26 Desoxidation von ventilmetallpulvern

Publications (1)

Publication Number Publication Date
BRPI0515172A true BRPI0515172A (pt) 2008-07-08

Family

ID=35445804

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0515172-4A BRPI0515172A (pt) 2004-09-08 2005-08-26 desoxidação de pós de metal de válvulas

Country Status (15)

Country Link
US (1) US20080011124A1 (pt)
EP (1) EP1793950A2 (pt)
JP (1) JP2008512568A (pt)
KR (1) KR20070098988A (pt)
CN (1) CN101052488A (pt)
AU (1) AU2005281918A1 (pt)
BR (1) BRPI0515172A (pt)
DE (1) DE102004043343A1 (pt)
IL (1) IL181782A0 (pt)
MX (1) MX2007002717A (pt)
RU (2) RU2404881C2 (pt)
SV (1) SV2006002222A (pt)
TW (1) TW200624200A (pt)
WO (1) WO2006027119A2 (pt)
ZA (1) ZA200701902B (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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
EP3112059B1 (en) * 2014-02-27 2020-01-15 Ningxia Orient Tantalum Industry Co., Ltd. Preparation of high-purity tantalum powder
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
CN119287185B (zh) * 2024-12-13 2025-03-14 河北睿阳稀有金属制品有限公司 一种低氧高纯金属铪的制备方法

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL252366A (pt) * 1958-06-13
US4141720A (en) * 1978-05-16 1979-02-27 Nrc, Inc. Tantalum powder reclaiming
DE3590793T1 (pt) * 1985-05-27 1987-09-17
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
US5022935A (en) * 1988-09-23 1991-06-11 Rmi Titanium Company Deoxidation of a refractory metal
EP0528974B1 (en) * 1990-05-17 1997-07-23 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
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 (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
JP2003013115A (ja) * 2001-06-28 2003-01-15 Sumitomo Metal Mining Co Ltd ニオブ及び／又はタンタル粉末の製造方法
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

Also Published As

Publication number Publication date
KR20070098988A (ko) 2007-10-08
TW200624200A (en) 2006-07-16
AU2005281918A1 (en) 2006-03-16
IL181782A0 (en) 2007-07-04
EP1793950A2 (de) 2007-06-13
WO2006027119A2 (de) 2006-03-16
MX2007002717A (es) 2008-03-11
SV2006002222A (es) 2006-05-25
US20080011124A1 (en) 2008-01-17
DE102004043343A1 (de) 2006-03-23
RU2007112796A (ru) 2008-10-20
RU2010116085A (ru) 2011-10-27
JP2008512568A (ja) 2008-04-24
WO2006027119A3 (de) 2006-06-15
RU2404881C2 (ru) 2010-11-27
ZA200701902B (en) 2008-08-27
CN101052488A (zh) 2007-10-10

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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.