GB959656A - Improvements in or relating to processes for increasing the superficial area of aluminium strips for use in electrolytic capacitors - Google Patents

Improvements in or relating to processes for increasing the superficial area of aluminium strips for use in electrolytic capacitors

Info

Publication number
GB959656A
GB959656A GB1385763A GB1385763A GB959656A GB 959656 A GB959656 A GB 959656A GB 1385763 A GB1385763 A GB 1385763A GB 1385763 A GB1385763 A GB 1385763A GB 959656 A GB959656 A GB 959656A
Authority
GB
United Kingdom
Prior art keywords
strip
relating
processes
increasing
superficial area
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.)
Expired
Application number
GB1385763A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB959656A publication Critical patent/GB959656A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

The superficial area of an aluminium strip, for use as an electrode in an electrolytic capacitor, is increased by annealing the strip, anodically oxidizing the surface of the annealed strip, e.g. in a 0.1 molar aqueous citric acid solution at a forming voltage of 15-75 volts, and chemically, e.g. using HCl solution, or electrochemically roughening the surface of the oxidized strip. The oxide layer may be strengthened by heating in water at above 75 DEG C. prior to roughening.
GB1385763A 1962-04-09 1963-04-08 Improvements in or relating to processes for increasing the superficial area of aluminium strips for use in electrolytic capacitors Expired GB959656A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES78906A DE1155540B (en) 1962-04-09 1962-04-09 Process for the production of aluminum electrodes for electrolytic capacitors

Publications (1)

Publication Number Publication Date
GB959656A true GB959656A (en) 1964-06-03

Family

ID=7507814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1385763A Expired GB959656A (en) 1962-04-09 1963-04-08 Improvements in or relating to processes for increasing the superficial area of aluminium strips for use in electrolytic capacitors

Country Status (3)

Country Link
DE (1) DE1155540B (en)
DK (1) DK103406C (en)
GB (1) GB959656A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164058A (en) * 1984-09-04 1986-03-12 Sprague Electric Co A process for making low-voltage aluminium foil for electrolytic capacitor electrodes
EP0880310A1 (en) * 1997-05-20 1998-11-25 Sagem S.A. Process for manufacturing printed circuits on a metallic substrate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113579A (en) 1977-04-28 1978-09-12 Sprague Electric Company Process for producing an aluminum electrolytic capacitor having a stable oxide film

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1033781B (en) * 1954-07-28 1958-07-10 Aluminium Walzwerke Singen Process for the production of chemically or electrochemically strongly roughened aluminum surfaces for electrolytic capacitors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164058A (en) * 1984-09-04 1986-03-12 Sprague Electric Co A process for making low-voltage aluminium foil for electrolytic capacitor electrodes
EP0880310A1 (en) * 1997-05-20 1998-11-25 Sagem S.A. Process for manufacturing printed circuits on a metallic substrate
FR2763780A1 (en) * 1997-05-20 1998-11-27 Sagem METHOD FOR MANUFACTURING PRINTED CIRCUITS ON A METAL SUBSTRATE

Also Published As

Publication number Publication date
DE1155540B (en) 1963-10-10
DK103406C (en) 1965-12-27

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