DE19831280A1 - Verfahren zur Herstellung von Erdsäuremetallpulvern, insbesondere Niobpulvern - Google Patents

Verfahren zur Herstellung von Erdsäuremetallpulvern, insbesondere Niobpulvern

Info

Publication number
DE19831280A1
DE19831280A1 DE19831280A DE19831280A DE19831280A1 DE 19831280 A1 DE19831280 A1 DE 19831280A1 DE 19831280 A DE19831280 A DE 19831280A DE 19831280 A DE19831280 A DE 19831280A DE 19831280 A1 DE19831280 A1 DE 19831280A1
Authority
DE
Germany
Prior art keywords
reduction
stage
niobium
ppm
hydrogen
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
DE19831280A
Other languages
German (de)
English (en)
Inventor
Karlheinz Reichert
Oliver Thomas
Joachim Vieregge
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
Application filed by HC Starck GmbH filed Critical HC Starck GmbH
Priority to DE19831280A priority Critical patent/DE19831280A1/de
Priority to PT99946575T priority patent/PT1144147E/pt
Priority to CN200610100397.7A priority patent/CN1919508B/zh
Priority to CZ20004112A priority patent/CZ302249B6/cs
Priority to EP99946575A priority patent/EP1144147B8/fr
Priority to BRPI9911008A priority patent/BRPI9911008B1/pt
Priority to BRPI9917635A priority patent/BRPI9917635B1/pt
Priority to CN2004100787672A priority patent/CN1607055B/zh
Priority to BR9911008-3A priority patent/BR9911008A/pt
Priority to KR1020007012285A priority patent/KR100583702B1/ko
Priority to EP20080169766 priority patent/EP2055412B1/fr
Priority to AU58965/99A priority patent/AU757790B2/en
Priority to DE69940030T priority patent/DE69940030D1/de
Priority to CA002525259A priority patent/CA2525259C/fr
Priority to JP2000616950A priority patent/JP4202609B2/ja
Priority to CN201510310262.2A priority patent/CN105033283A/zh
Priority to ID20002238A priority patent/ID27391A/id
Priority to CZ20100603A priority patent/CZ303684B6/cs
Priority to PT08169766T priority patent/PT2055412E/pt
Priority to CZ20100604A priority patent/CZ303685B6/cs
Publication of DE19831280A1 publication Critical patent/DE19831280A1/de
Priority to HK02100530.5A priority patent/HK1039087B/zh
Priority to HK05107423A priority patent/HK1075025A1/xx
Priority to JP2007275178A priority patent/JP2008094716A/ja
Priority to JP2007274870A priority patent/JP5008523B2/ja
Priority to JP2007275024A priority patent/JP5008524B2/ja
Priority to JP2008175539A priority patent/JP5119065B2/ja
Priority to HK16100784.2A priority patent/HK1212950A1/zh
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/045—Alloys based on refractory metals
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
DE19831280A 1998-05-06 1998-07-13 Verfahren zur Herstellung von Erdsäuremetallpulvern, insbesondere Niobpulvern Ceased DE19831280A1 (de)

Priority Applications (27)

Application Number Priority Date Filing Date Title
DE19831280A DE19831280A1 (de) 1998-07-13 1998-07-13 Verfahren zur Herstellung von Erdsäuremetallpulvern, insbesondere Niobpulvern
CA002525259A CA2525259C (fr) 1998-05-06 1999-05-05 Poudres metalliques obtenues par reduction d'oxides au moyen de magnesium gazeux
JP2000616950A JP4202609B2 (ja) 1998-05-06 1999-05-05 気体状マグネシウムを用いる酸化物の還元により製造される金属粉末
CZ20004112A CZ302249B6 (cs) 1998-05-06 1999-05-05 Zpusob výroby kovových prášku
EP99946575A EP1144147B8 (fr) 1998-05-06 1999-05-05 PROCEDE DE FABRICATION DE POUDRES METALLIQUES PAR REDUCTION D'OXIDES, POUDRES DE Nb ET Nb-Ta ET ANODE DE CONDENSATEUR OBTENUE
BRPI9911008A BRPI9911008B1 (pt) 1998-05-06 1999-05-05 processo para a produção de capacitor de pós de metal, pó de nióbio, anodo de capacitor, pó de liga para uso na fabricação de capacitores eletrolíticos, processo para a fabricação de pó de liga
BRPI9917635A BRPI9917635B1 (pt) 1998-05-06 1999-05-05 pó de nióbio na forma de partículas aglomeradas primárias e método para a obtenção de um anodo de capacitor
CN2004100787672A CN1607055B (zh) 1998-05-06 1999-05-05 铌粉、以其制备的阳极以及含有该阳极的电容器
BR9911008-3A BR9911008A (pt) 1998-05-06 1999-05-05 Pós de metal produzidos através da redução dos óxidos com magnésio gasoso
KR1020007012285A KR100583702B1 (ko) 1998-05-06 1999-05-05 가스상의 환원제로 산화물을 환원시켜 금속 분말을 제조하는 방법 및 그로부터 제조된 금속 분말
CN200610100397.7A CN1919508B (zh) 1998-05-06 1999-05-05 用气态镁还原有关氧化物制备的金属粉末
AU58965/99A AU757790B2 (en) 1998-05-06 1999-05-05 Metal powders produced by the reduction of the oxides with gaseous magnesium
DE69940030T DE69940030D1 (de) 1998-05-06 1999-05-05 VERFAHREN ZUR HERSTELLUNG VON METALLPULVERN DURCH REDUKTION VON OXIDEN, Nb UND Nb-Ta PULVER UND DAMIT HERGESTELLTE KONDENSATORANODE
PT99946575T PT1144147E (pt) 1998-05-06 1999-05-05 Método de produção de pós metálicos por redução dos óxidos, pós de nb e nb-ta e ânodo de condensador obtido com os mesmos
EP20080169766 EP2055412B1 (fr) 1998-05-06 1999-05-05 Poudre de niobum ou tantale produite par la réduction des oxydes avec un metal gazeux
CZ20100604A CZ303685B6 (cs) 1998-05-06 1999-05-05 Práskový niob ve forme aglomerovaných primárních cástic, anoda kondenzátoru z tohoto práskového niobu a kondenzátor
ID20002238A ID27391A (id) 1998-05-06 1999-05-05 Serbuk logam yang diproduksi oleh penurunan oksida dengan gas-gas magnesium
CZ20100603A CZ303684B6 (cs) 1998-05-06 1999-05-05 Slitinový prásek, zpusob jeho výroby, anoda kondenzátoru z tohoto slitinového prásku a kondenzátor, a prásek slitiny niobu a tantalu
PT08169766T PT2055412E (pt) 1998-05-06 1999-05-05 Pós de metal produzidos por redução dos óxidos com magnésio gasoso
CN201510310262.2A CN105033283A (zh) 1998-05-06 1999-05-05 用气态镁还原有关氧化物制备的金属粉末
HK02100530.5A HK1039087B (zh) 1998-05-06 2002-01-23 金屬粉末的製備方法
HK05107423A HK1075025A1 (en) 1998-05-06 2005-08-24 Niobium powder, anode produced therewith, and the anode-containing capacitor
JP2007275178A JP2008094716A (ja) 1998-05-06 2007-10-23 気体状マグネシウムを用いる酸化物の還元により製造される金属粉末
JP2007274870A JP5008523B2 (ja) 1998-05-06 2007-10-23 気体状マグネシウムを用いる酸化物の還元により製造される金属粉末
JP2007275024A JP5008524B2 (ja) 1998-05-06 2007-10-23 気体状マグネシウムを用いる酸化物の還元により製造される金属粉末
JP2008175539A JP5119065B2 (ja) 1998-05-06 2008-07-04 金属粉末の製造方法
HK16100784.2A HK1212950A1 (zh) 1998-05-06 2016-01-25 用氣態鎂還原有關氧化物製備的金屬粉末

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19831280A DE19831280A1 (de) 1998-07-13 1998-07-13 Verfahren zur Herstellung von Erdsäuremetallpulvern, insbesondere Niobpulvern

Publications (1)

Publication Number Publication Date
DE19831280A1 true DE19831280A1 (de) 2000-01-20

Family

ID=7873847

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19831280A Ceased DE19831280A1 (de) 1998-05-06 1998-07-13 Verfahren zur Herstellung von Erdsäuremetallpulvern, insbesondere Niobpulvern

Country Status (1)

Country Link
DE (1) DE19831280A1 (fr)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001071738A2 (fr) * 2000-03-23 2001-09-27 Cabot Corporation Oxydes de niobium a teneur reduite en oxygene
US6375704B1 (en) 1999-05-12 2002-04-23 Cabot Corporation High capacitance niobium powders and electrolytic capacitor anodes
EP1291100A1 (fr) † 2000-06-01 2003-03-12 Cabot Supermetals K.K. Poudre de niobium ou de tantale, son procede de preparation et condensateur electrolytique solide
US6576099B2 (en) 2000-03-23 2003-06-10 Cabot Corporation Oxygen reduced niobium oxides
US6592740B2 (en) 1998-09-16 2003-07-15 Cabot Corporation Methods to make capacitors containing a partially reduced niobium metal oxide
US6679934B2 (en) 2000-03-01 2004-01-20 Cabot Corporation Nitrided valve metals and processes for making the same
WO2002086923A3 (fr) * 2001-04-19 2004-02-12 Cabot Corp Procedes pour produire un oxyde de niobium
WO2004042095A1 (fr) 2002-11-04 2004-05-21 Companhia Brasileira De Metalurgia E Mineração - Cbmm Procede servant a preparer de la poudre de niobium et/ou de tantale presentant une surface importante
US6762927B2 (en) 2000-08-25 2004-07-13 H.C. Starck Gmbh & Co. Kg Niobium-based capacitor anode
US6821314B1 (en) 1999-11-09 2004-11-23 H. C. Starck Gmbh Capacitor powder
EP1524252A2 (fr) * 2003-10-14 2005-04-20 H.C. Starck GmbH Corps frittés en suboxyde de niobium
DE10192560B4 (de) * 2000-06-21 2007-02-15 H.C. Starck Gmbh Kondensatorpulver
US7220397B2 (en) 2000-11-06 2007-05-22 Cabot Corporation Modified oxygen reduced valve metal oxides
AU2002308967B2 (en) * 2001-05-15 2007-12-06 Showa Denko K.K. Niobium monoxide powder, niobium monoxide sintered product and capacitor using niobium monoxide sintered product
CN100404428C (zh) * 2003-07-22 2008-07-23 H.C.施塔克股份有限公司 低氧化铌、其制造方法和含有它的电容器
US7445679B2 (en) 2003-05-16 2008-11-04 Cabot Corporation Controlled oxygen addition for metal material
US7515397B2 (en) 2003-05-19 2009-04-07 Cabot Corporation Methods of making a niobium metal oxide and oxygen reduced niobium oxides
US7655214B2 (en) 2003-02-26 2010-02-02 Cabot Corporation Phase formation of oxygen reduced valve metal oxides and granulation methods
EP2289083A2 (fr) * 2008-05-12 2011-03-02 Kemet Electronics Corporation Anodes à haut rendement volumétrique pour condensateurs électrolytiques
EP1324359B2 (fr) † 2000-08-10 2017-10-04 Showa Denko K.K. Poudre de niobium, aggloméré correspondant, et condensateur utilisant ceux-ci
CN111926282A (zh) * 2019-12-30 2020-11-13 宁夏东方钽业股份有限公司 一种钽材和铌材的氢化方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196376B (de) * 1964-04-13 1965-07-08 Berliner Gluehlampen Werk Veb Verfahren zur Aufbereitung von Tantal, vorzugsweise von Abfaellen, zu Tantalpulver
GB1158391A (en) * 1966-03-03 1969-07-16 Ass Elect Ind Improvements in the production of Superconducting Materials
DE1928149B2 (fr) * 1968-06-06 1971-01-21
CH528598A (de) * 1967-04-12 1972-09-30 Starck Hermann C Fa Verfahren zur Herstellung von Legierungen oder Gemischen des Tantals oder Niobs
DE3445730A1 (de) * 1983-12-20 1985-06-27 Exxon Research And Engineering Co., Florham Park, N.J. Reduktionsverfahren zur herstellung pulverfoermiger legierungen aus gemischten metalleisenoxiden
US4722756A (en) * 1987-02-27 1988-02-02 Cabot Corp Method for deoxidizing tantalum material
US4960471A (en) * 1989-09-26 1990-10-02 Cabot Corporation Controlling the oxygen content in tantalum material
GB2233349A (en) * 1989-06-26 1991-01-09 Cabot Corp Powders and products of tantalum, niobium and their alloys
DE4214722A1 (de) * 1992-05-04 1993-11-11 Starck H C Gmbh Co Kg Feinteilige Metallpulver
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

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196376B (de) * 1964-04-13 1965-07-08 Berliner Gluehlampen Werk Veb Verfahren zur Aufbereitung von Tantal, vorzugsweise von Abfaellen, zu Tantalpulver
GB1158391A (en) * 1966-03-03 1969-07-16 Ass Elect Ind Improvements in the production of Superconducting Materials
CH528598A (de) * 1967-04-12 1972-09-30 Starck Hermann C Fa Verfahren zur Herstellung von Legierungen oder Gemischen des Tantals oder Niobs
DE1928149B2 (fr) * 1968-06-06 1971-01-21
DE3445730A1 (de) * 1983-12-20 1985-06-27 Exxon Research And Engineering Co., Florham Park, N.J. Reduktionsverfahren zur herstellung pulverfoermiger legierungen aus gemischten metalleisenoxiden
DE3737016A1 (de) * 1987-02-27 1988-09-08 Cabot Corp Verfahren zum desoxidieren von tantal- und/oder niobhaltigem material
US4722756A (en) * 1987-02-27 1988-02-02 Cabot Corp Method for deoxidizing tantalum material
GB2233349A (en) * 1989-06-26 1991-01-09 Cabot Corp Powders and products of tantalum, niobium and their alloys
DE4019305A1 (de) * 1989-06-26 1991-01-10 Cabot Corp Pulver und produkte von tantal, niob und deren legierungen
US4960471A (en) * 1989-09-26 1990-10-02 Cabot Corporation Controlling the oxygen content in tantalum material
DE4030470A1 (de) * 1989-09-26 1991-04-04 Cabot Corp Kontrolle des sauerstoffgehalts in einem werkstoff aus tantal
DE4214722A1 (de) * 1992-05-04 1993-11-11 Starck H C Gmbh Co Kg Feinteilige Metallpulver
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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HÄHN,Reinhard, RETELSDORF,Hans-Joachim: Herstellung von Rein-Niob. In: Erzmetall 37, 1984, Nr.9, S.444-448 *
SCHULZE,Klaus K.: Preparation and Characterizationof Ultra-High-Purity Niobium. In: Journal Of Metals, May 1981, S.33-41 *

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7445762B2 (en) 1998-09-16 2008-11-04 Cabot Corporation Method to partially reduce calcined niobium metal oxide and oxygen reduced niobium oxides
US6592740B2 (en) 1998-09-16 2003-07-15 Cabot Corporation Methods to make capacitors containing a partially reduced niobium metal oxide
US6759026B2 (en) 1998-09-16 2004-07-06 Cabot Corporation Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides
US6702869B2 (en) 1999-05-12 2004-03-09 Cabot Corporation High capacitance niobium powders and electrolytic capacitor anodes
US6375704B1 (en) 1999-05-12 2002-04-23 Cabot Corporation High capacitance niobium powders and electrolytic capacitor anodes
US7749297B2 (en) 1999-05-12 2010-07-06 Cabot Corporation High capacitance niobium powders and electrolytic capacitor anodes
US6821314B1 (en) 1999-11-09 2004-11-23 H. C. Starck Gmbh Capacitor powder
US7144546B2 (en) 2000-03-01 2006-12-05 Cabot Corporation Nitrided valve metals and processes for making the same
US6679934B2 (en) 2000-03-01 2004-01-20 Cabot Corporation Nitrided valve metals and processes for making the same
AU2001247714B2 (en) * 2000-03-23 2005-06-23 Cabot Corporation Oxygen reduced niobium oxides
JP4754755B2 (ja) * 2000-03-23 2011-08-24 キャボット コーポレイション 酸素が減少した酸化ニオブ
WO2001071738A3 (fr) * 2000-03-23 2002-07-04 Cabot Corp Oxydes de niobium a teneur reduite en oxygene
WO2001071738A2 (fr) * 2000-03-23 2001-09-27 Cabot Corporation Oxydes de niobium a teneur reduite en oxygene
JP2003530688A (ja) * 2000-03-23 2003-10-14 キャボット コーポレイション 酸素が減少した酸化ニオブ
CZ302745B6 (cs) * 2000-03-23 2011-10-12 Cabot Corporation Lisovaná anoda obsahující práškový oxid niobu a zpusob její výroby
US6576099B2 (en) 2000-03-23 2003-06-10 Cabot Corporation Oxygen reduced niobium oxides
EP1291100B2 (fr) † 2000-06-01 2013-06-12 Cabot Supermetals K.K. Poudre de niobium ou de tantale et son procede de preparation
EP1291100A1 (fr) † 2000-06-01 2003-03-12 Cabot Supermetals K.K. Poudre de niobium ou de tantale, son procede de preparation et condensateur electrolytique solide
US7204866B2 (en) 2000-06-01 2007-04-17 Cabot Supermetals K.K. Niobium or tantalum powder and method for production thereof, and solid electrolytic capacitor
DE10192560B4 (de) * 2000-06-21 2007-02-15 H.C. Starck Gmbh Kondensatorpulver
EP1324359B2 (fr) † 2000-08-10 2017-10-04 Showa Denko K.K. Poudre de niobium, aggloméré correspondant, et condensateur utilisant ceux-ci
US6762927B2 (en) 2000-08-25 2004-07-13 H.C. Starck Gmbh & Co. Kg Niobium-based capacitor anode
US7220397B2 (en) 2000-11-06 2007-05-22 Cabot Corporation Modified oxygen reduced valve metal oxides
US7149074B2 (en) 2001-04-19 2006-12-12 Cabot Corporation Methods of making a niobium metal oxide
WO2002086923A3 (fr) * 2001-04-19 2004-02-12 Cabot Corp Procedes pour produire un oxyde de niobium
AU2002308967B2 (en) * 2001-05-15 2007-12-06 Showa Denko K.K. Niobium monoxide powder, niobium monoxide sintered product and capacitor using niobium monoxide sintered product
WO2004042095A1 (fr) 2002-11-04 2004-05-21 Companhia Brasileira De Metalurgia E Mineração - Cbmm Procede servant a preparer de la poudre de niobium et/ou de tantale presentant une surface importante
US7655214B2 (en) 2003-02-26 2010-02-02 Cabot Corporation Phase formation of oxygen reduced valve metal oxides and granulation methods
US7445679B2 (en) 2003-05-16 2008-11-04 Cabot Corporation Controlled oxygen addition for metal material
US8110172B2 (en) 2003-05-19 2012-02-07 Cabot Corporation Methods of making a niobium metal oxide and oxygen reduced niobium oxides
US7515397B2 (en) 2003-05-19 2009-04-07 Cabot Corporation Methods of making a niobium metal oxide and oxygen reduced niobium oxides
CN100404428C (zh) * 2003-07-22 2008-07-23 H.C.施塔克股份有限公司 低氧化铌、其制造方法和含有它的电容器
EP1524252A3 (fr) * 2003-10-14 2005-11-09 H.C. Starck GmbH Corps frittés en suboxyde de niobium
EP1524252A2 (fr) * 2003-10-14 2005-04-20 H.C. Starck GmbH Corps frittés en suboxyde de niobium
EP2289083A4 (fr) * 2008-05-12 2011-06-22 Kemet Electronics Corp Anodes à haut rendement volumétrique pour condensateurs électrolytiques
US8308825B2 (en) 2008-05-12 2012-11-13 Kemet Electronics Corporation High volumetric efficiency anodes for electrolytic capacitors
EP2289083A2 (fr) * 2008-05-12 2011-03-02 Kemet Electronics Corporation Anodes à haut rendement volumétrique pour condensateurs électrolytiques
CN111926282A (zh) * 2019-12-30 2020-11-13 宁夏东方钽业股份有限公司 一种钽材和铌材的氢化方法

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