FR2399724A2 - Perfectionnement au traitement de surface des anodes de condensateurs au tantale - Google Patents

Perfectionnement au traitement de surface des anodes de condensateurs au tantale

Info

Publication number
FR2399724A2
FR2399724A2 FR7723982A FR7723982A FR2399724A2 FR 2399724 A2 FR2399724 A2 FR 2399724A2 FR 7723982 A FR7723982 A FR 7723982A FR 7723982 A FR7723982 A FR 7723982A FR 2399724 A2 FR2399724 A2 FR 2399724A2
Authority
FR
France
Prior art keywords
stage
anodes
capacitors
pref
residual current
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.)
Granted
Application number
FR7723982A
Other languages
English (en)
Other versions
FR2399724B2 (fr
Inventor
Balint Escher
Dominique Prince
Jean Vasseux
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.)
Lignes Telegraphiques et Telephoniques LTT SA
Original Assignee
Lignes Telegraphiques et Telephoniques LTT SA
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 Lignes Telegraphiques et Telephoniques LTT SA filed Critical Lignes Telegraphiques et Telephoniques LTT SA
Priority to FR7723982A priority Critical patent/FR2399724A2/fr
Priority to NL7714173A priority patent/NL7714173A/xx
Priority to DE19772758807 priority patent/DE2758807A1/de
Priority to IT69972/77A priority patent/IT1091695B/it
Priority to US05/866,714 priority patent/US4135990A/en
Priority to GB7884A priority patent/GB1542226A/en
Publication of FR2399724A2 publication Critical patent/FR2399724A2/fr
Application granted granted Critical
Publication of FR2399724B2 publication Critical patent/FR2399724B2/fr
Granted legal-status Critical Current

Links

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
    • H01G9/0029—Processes of manufacture
    • H01G9/0032—Processes of manufacture formation of the dielectric layer
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/26—Anodisation of refractory metals or alloys based thereon

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

Oxydation anodique des anodes pour condensateurs électrolytiques solides au tantale. Après frittage, les anodes sont soumises à une préoxydation anodique suivie d'un lavage en milieu acide, puis les anodes sont oxydées une deuxième fois. Amélioration du courant de fuite direct.
FR7723982A 1977-01-07 1977-08-04 Perfectionnement au traitement de surface des anodes de condensateurs au tantale Granted FR2399724A2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR7723982A FR2399724A2 (fr) 1977-08-04 1977-08-04 Perfectionnement au traitement de surface des anodes de condensateurs au tantale
NL7714173A NL7714173A (nl) 1977-01-07 1977-12-21 Werkwijze voor de anodische oxydatie van gefritte anoden.
DE19772758807 DE2758807A1 (de) 1977-01-07 1977-12-30 Verfahren zur anodischen oxidation von tantalsinteranoden
IT69972/77A IT1091695B (it) 1977-01-07 1977-12-30 Procedimento per l ossidazione anodica di anodi sinterizzati per condensatori al tantalio
US05/866,714 US4135990A (en) 1977-01-07 1978-01-03 Surface treatment of the anodes for tantalum capacitors
GB7884A GB1542226A (en) 1977-01-07 1978-01-03 Surface treatment of tantalum anodes for electrolytic capacitors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7723982A FR2399724A2 (fr) 1977-08-04 1977-08-04 Perfectionnement au traitement de surface des anodes de condensateurs au tantale

Publications (2)

Publication Number Publication Date
FR2399724A2 true FR2399724A2 (fr) 1979-03-02
FR2399724B2 FR2399724B2 (fr) 1980-07-11

Family

ID=9194212

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7723982A Granted FR2399724A2 (fr) 1977-01-07 1977-08-04 Perfectionnement au traitement de surface des anodes de condensateurs au tantale

Country Status (1)

Country Link
FR (1) FR2399724A2 (fr)

Also Published As

Publication number Publication date
FR2399724B2 (fr) 1980-07-11

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