HK1001346A1 - Method of producing high surface area low metal impurity tantalum powder - Google Patents

Method of producing high surface area low metal impurity tantalum powder Download PDF

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Publication number
HK1001346A1
HK1001346A1 HK98100345A HK98100345A HK1001346A1 HK 1001346 A1 HK1001346 A1 HK 1001346A1 HK 98100345 A HK98100345 A HK 98100345A HK 98100345 A HK98100345 A HK 98100345A HK 1001346 A1 HK1001346 A1 HK 1001346A1
Authority
HK
Hong Kong
Prior art keywords
reactor
tantalum
sodium
tantalum powder
active ingredient
Prior art date
Application number
HK98100345A
Other languages
German (de)
English (en)
French (fr)
Chinese (zh)
Other versions
HK1001346B (en
Inventor
Chang Hongju
Original Assignee
Cabot Corporation
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 Cabot Corporation filed Critical Cabot Corporation
Publication of HK1001346A1 publication Critical patent/HK1001346A1/en
Publication of HK1001346B publication Critical patent/HK1001346B/en

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Classifications

    • 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
    • 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
    • B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)
HK98100345.5A 1990-05-17 1991-05-17 Method of producing high surface area low metal impurity tantalum powder HK1001346B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US52536490A 1990-05-17 1990-05-17
PCT/US1991/003499 WO1991018121A1 (en) 1990-05-17 1991-05-17 Method of producing high surface area low metal impurity tantalum powder
US525364 1995-09-07

Publications (2)

Publication Number Publication Date
HK1001346A1 true HK1001346A1 (en) 1998-06-12
HK1001346B HK1001346B (en) 1998-06-12

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Also Published As

Publication number Publication date
DE69126973T2 (de) 1998-02-12
EP0528974A4 (enExample) 1994-02-09
EP0528974A1 (en) 1993-03-03
DE69126973D1 (de) 1997-09-04
RU2089350C1 (ru) 1997-09-10
AU7979391A (en) 1991-12-10
WO1991018121A1 (en) 1991-11-28
EP0528974B1 (en) 1997-07-23

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20060517