GB393565A - Improvements in and relating to the production of oxide coatings on aluminium and its alloys - Google Patents

Improvements in and relating to the production of oxide coatings on aluminium and its alloys

Info

Publication number
GB393565A
GB393565A GB2475731A GB2475731A GB393565A GB 393565 A GB393565 A GB 393565A GB 2475731 A GB2475731 A GB 2475731A GB 2475731 A GB2475731 A GB 2475731A GB 393565 A GB393565 A GB 393565A
Authority
GB
United Kingdom
Prior art keywords
aluminium
current
alloys
relating
production
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
GB2475731A
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.)
Vereinigte Aluminium Werke AG
Original Assignee
Vereinigte Aluminium Werke 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 Vereinigte Aluminium Werke AG filed Critical Vereinigte Aluminium Werke AG
Publication of GB393565A publication Critical patent/GB393565A/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
    • 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
    • C25D11/024—Anodisation under pulsed or modulated current or potential
    • 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
    • C25D11/18—After-treatment, e.g. pore-sealing

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)
  • Electrolytic Production Of Metals (AREA)

Abstract

393,565. Electrolytic treatment of aluminium. VEREINIGTE ALUMINIUMWERKE AKT.-CTES., Lautawerk, Lausitz, Germany. Sept. 3, 1931, No. 24757. Convention date, Sept. 25, 1930. Void [Published under'Sect. 91 of the Acts]. [Class 41.] Dense, thick oxide layers are produced on aluminium and its alloys by passage of a variable uni-directional current. The current may be produced by the use of a suitable generator, by rectification of an alternating current, by interruption of a direct current, or by superimposing a direct on an alternating current. Reference is made to a prior process using direct current with milk of lime as electrolyte.
GB2475731A 1930-09-26 1931-09-03 Improvements in and relating to the production of oxide coatings on aluminium and its alloys Expired GB393565A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1930G0011030 DE595592C (en) 1930-09-26 1930-09-26 Process for post-treatment of oxide coatings produced on aluminum or its alloys

Publications (1)

Publication Number Publication Date
GB393565A true GB393565A (en) 1933-06-08

Family

ID=6573680

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2475731A Expired GB393565A (en) 1930-09-26 1931-09-03 Improvements in and relating to the production of oxide coatings on aluminium and its alloys

Country Status (3)

Country Link
DE (1) DE595592C (en)
FR (1) FR723267A (en)
GB (1) GB393565A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930741A (en) * 1960-03-29 Electrolytic capacitors
DE1151604B (en) * 1951-06-19 1963-07-18 British Dielectric Res Ltd Anodic-electrolytic etching process to enlarge the surface of electrode starting material for electrolytic capacitors
US3141798A (en) * 1961-11-28 1964-07-21 Gen Electric Anodization of aluminum in a solution of calcium hydroxide
DE3917427A1 (en) * 1989-05-29 1990-12-06 Siemens Ag Aluminium electrolytic capacitor prodn. - involving low temp. pulsed voltage treatment to improve overvoltage resistance

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930741A (en) * 1960-03-29 Electrolytic capacitors
DE1151604B (en) * 1951-06-19 1963-07-18 British Dielectric Res Ltd Anodic-electrolytic etching process to enlarge the surface of electrode starting material for electrolytic capacitors
US3141798A (en) * 1961-11-28 1964-07-21 Gen Electric Anodization of aluminum in a solution of calcium hydroxide
DE3917427A1 (en) * 1989-05-29 1990-12-06 Siemens Ag Aluminium electrolytic capacitor prodn. - involving low temp. pulsed voltage treatment to improve overvoltage resistance

Also Published As

Publication number Publication date
DE595592C (en) 1934-04-18
FR723267A (en) 1932-04-06

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