GB1247525A - Improvements in or relating to the electrolytic etching of aluminium foils - Google Patents

Improvements in or relating to the electrolytic etching of aluminium foils

Info

Publication number
GB1247525A
GB1247525A GB5617268A GB5617268A GB1247525A GB 1247525 A GB1247525 A GB 1247525A GB 5617268 A GB5617268 A GB 5617268A GB 5617268 A GB5617268 A GB 5617268A GB 1247525 A GB1247525 A GB 1247525A
Authority
GB
United Kingdom
Prior art keywords
etching
electrolytic etching
relating
aluminium foils
aluminium
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
GB5617268A
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 AG
Original Assignee
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 AG filed Critical Siemens AG
Publication of GB1247525A publication Critical patent/GB1247525A/en
Expired 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
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
    • H01G9/055—Etched foil electrodes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/02—Etching
    • C25F3/04—Etching of light metals

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

1,247,525. Electrolytic etching of aluminium. SIEMENS A. G. Nov. 27, 1968 [Nov. 28, 1967], No. 56172/68. Heading C7B. In roughening by etching an aluminium foil for use in an electrolytic capacitor, the foil is annealed before electrolytic etching in an aqueous solution at a temperature above 70‹ C. containing a chloride concentration of 2 to 4N and free from sulphate ions with a D. C. etching current having an A. C. ripple of less than 10%.
GB5617268A 1967-11-28 1968-11-27 Improvements in or relating to the electrolytic etching of aluminium foils Expired GB1247525A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1621175 1967-11-28

Publications (1)

Publication Number Publication Date
GB1247525A true GB1247525A (en) 1971-09-22

Family

ID=5682507

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5617268A Expired GB1247525A (en) 1967-11-28 1968-11-27 Improvements in or relating to the electrolytic etching of aluminium foils

Country Status (5)

Country Link
BE (1) BE724598A (en)
DE (1) DE1621175B1 (en)
FR (1) FR1592815A (en)
GB (1) GB1247525A (en)
NL (1) NL6814022A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4584067A (en) * 1985-02-28 1986-04-22 Sprague Electric Company Etching of aluminum electrolytic capacitor foil

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7710775A (en) * 1977-10-03 1979-04-05 Philips Nv CATHODEFOIL FOR ELECTROLYTIC CAPACITOR.
DE2801218C3 (en) * 1978-01-12 1980-11-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen Process for electrolytic etching of a recrystallized aluminum foil and its use
CN108221004B (en) * 2018-02-07 2019-06-04 中南大学 A kind of measurement method of molten aluminum interface fluctuation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966928C (en) * 1934-08-22 1957-09-19 Radio Patents Company Electrode, especially anode for electrolytic capacitors
DE1025695B (en) * 1955-08-11 1958-03-06 Siemens Ag Process for roughening aluminum electrodes
DE1110492B (en) * 1956-09-20 1961-07-06 Siemens Ag Aluminum foil with enlarged surface by etching
DE1187885B (en) * 1961-12-01 1965-02-25 Aluminium Walzwerke Singen Process and device for the continuous annealing and electrolytic treatment of metal strips and wires

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4584067A (en) * 1985-02-28 1986-04-22 Sprague Electric Company Etching of aluminum electrolytic capacitor foil

Also Published As

Publication number Publication date
NL6814022A (en) 1969-05-30
DE1621175B1 (en) 1971-10-07
FR1592815A (en) 1970-05-19
BE724598A (en) 1969-05-28

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