FR854921A - Process for increasing the active surface of aluminum electrodes for electolytic capacitors - Google Patents

Process for increasing the active surface of aluminum electrodes for electolytic capacitors

Info

Publication number
FR854921A
FR854921A FR854921DA FR854921A FR 854921 A FR854921 A FR 854921A FR 854921D A FR854921D A FR 854921DA FR 854921 A FR854921 A FR 854921A
Authority
FR
France
Prior art keywords
electolytic
capacitors
increasing
active surface
aluminum electrodes
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
Other languages
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR854921A publication Critical patent/FR854921A/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
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/10—Etching compositions
    • C23F1/14—Aqueous compositions
    • C23F1/16—Acidic compositions
    • C23F1/20—Acidic compositions for etching aluminium or alloys thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Weting (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • ing And Chemical Polishing (AREA)
FR854921D 1938-05-20 1939-05-17 Process for increasing the active surface of aluminum electrodes for electolytic capacitors Expired FR854921A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1938N0041992 DE695770C (en) 1938-05-20 1938-05-20 Process to increase the effective surface of aluminum electrodes for electrolytic capacitors by pickling

Publications (1)

Publication Number Publication Date
FR854921A true FR854921A (en) 1940-04-27

Family

ID=7348479

Family Applications (1)

Application Number Title Priority Date Filing Date
FR854921D Expired FR854921A (en) 1938-05-20 1939-05-17 Process for increasing the active surface of aluminum electrodes for electolytic capacitors

Country Status (5)

Country Link
CH (1) CH215004A (en)
DE (1) DE695770C (en)
DK (1) DK58174C (en)
FR (1) FR854921A (en)
GB (1) GB520372A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853445A (en) * 1956-04-06 1958-09-23 Aerovox Corp Process of etching aluminum foil for electrolytic capacitor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976026C (en) * 1951-02-15 1963-01-17 Aluminium Walzwerke Singen Process for roughening aluminum foils
DE1122177B (en) * 1954-07-09 1962-01-18 Siemens Ag Process for the production of roughened electrodes, in particular aluminum electrodes for electrolytic capacitors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853445A (en) * 1956-04-06 1958-09-23 Aerovox Corp Process of etching aluminum foil for electrolytic capacitor

Also Published As

Publication number Publication date
GB520372A (en) 1940-04-22
DE695770C (en) 1940-09-02
DK58174C (en) 1940-11-18
CH215004A (en) 1941-05-31

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