CA1168965A - Chemical etching of aluminum capacitor foil - Google Patents

Chemical etching of aluminum capacitor foil

Info

Publication number
CA1168965A
CA1168965A CA000431485A CA431485A CA1168965A CA 1168965 A CA1168965 A CA 1168965A CA 000431485 A CA000431485 A CA 000431485A CA 431485 A CA431485 A CA 431485A CA 1168965 A CA1168965 A CA 1168965A
Authority
CA
Canada
Prior art keywords
foil
sulfuric acid
sodium chloride
aluminum
capacitance
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
CA000431485A
Other languages
English (en)
French (fr)
Inventor
Alfred Whitman
Original Assignee
Sprague Electric Co
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 Sprague Electric Co filed Critical Sprague Electric Co
Application granted granted Critical
Publication of CA1168965A publication Critical patent/CA1168965A/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)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)
CA000431485A 1982-08-23 1983-06-29 Chemical etching of aluminum capacitor foil Expired CA1168965A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/410,271 US4395305A (en) 1982-08-23 1982-08-23 Chemical etching of aluminum capacitor foil
US410,271 1982-08-23

Publications (1)

Publication Number Publication Date
CA1168965A true CA1168965A (en) 1984-06-12

Family

ID=23623994

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000431485A Expired CA1168965A (en) 1982-08-23 1983-06-29 Chemical etching of aluminum capacitor foil

Country Status (3)

Country Link
US (1) US4395305A (enExample)
JP (1) JPS5935419A (enExample)
CA (1) CA1168965A (enExample)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USH284H (en) 1986-02-24 1987-06-02 The United States Of America As Represented By The Secretary Of The Army Non-carcinogenic, non-polluting sulfuric acid etchants for preparing aluminum surfaces for adhesive bonding
DE3717654A1 (de) * 1987-05-26 1988-12-08 Hoechst Ag Verfahren zur elektrochemischen aufrauhung von aluminium fuer druckplattentraeger
DE4232636C2 (de) * 1992-09-29 1996-04-11 Siemens Ag Verfahren zum Herstellen von Elektrodenfolien für, insbesondere Hochvolt-, Elektrolytkondensatoren
US6249423B1 (en) * 1998-04-21 2001-06-19 Cardiac Pacemakers, Inc. Electrolytic capacitor and multi-anodic attachment
US6187028B1 (en) 1998-04-23 2001-02-13 Intermedics Inc. Capacitors having metallized film with tapered thickness
US6110233A (en) * 1998-05-11 2000-08-29 Cardiac Pacemakers, Inc. Wound multi-anode electrolytic capacitor with offset anodes
US6556863B1 (en) * 1998-10-02 2003-04-29 Cardiac Pacemakers, Inc. High-energy capacitors for implantable defibrillators
US6275729B1 (en) * 1998-10-02 2001-08-14 Cardiac Pacemakers, Inc. Smaller electrolytic capacitors for implantable defibrillators
US6385490B1 (en) 1999-12-16 2002-05-07 Cardiac Pacemakers, Inc. Capacitors with recessed rivets allow smaller implantable defibrillators
US6426864B1 (en) 2000-06-29 2002-07-30 Cardiac Pacemakers, Inc. High energy capacitors for implantable defibrillators
CA2716144A1 (en) 2009-10-02 2011-04-02 University Of Windsor Method of surface treatment of aluminum foil and its alloy and method of producing immobilized nanocatalyst of transition metal oxides and their alloys
CN105957717B (zh) * 2016-05-26 2018-11-30 乳源县立东电子科技有限公司 中高压阳极箔的多段多次发孔方法
JP1595451S (enExample) * 2017-06-20 2018-01-22
US11545307B2 (en) * 2019-02-11 2023-01-03 Pacesetter, Inc. Fabrication of capacitors and recovery of capacitor fabrication matertials

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB966627A (en) * 1962-04-09 1964-08-12 British Dielectric Res Ltd Improvements in or relating to the electrolytic etching of anodisable metal foil
US3316164A (en) * 1964-04-23 1967-04-25 Sprague Electric Co Etching of aluminum foil
US3321389A (en) * 1964-07-20 1967-05-23 Mallory & Co Inc P R Method of anodically etching aluminum foils at elevated temperatures in an electrolyte including chloride and sulfate ions
US3884783A (en) * 1972-08-30 1975-05-20 Nat Steel Corp Direct current electrolytic etching of aluminum foil without the use of contact rolls

Also Published As

Publication number Publication date
US4395305A (en) 1983-07-26
JPS5935419A (ja) 1984-02-27
JPS6361767B2 (enExample) 1988-11-30

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Legal Events

Date Code Title Description
MKEX Expiry