GB466941A - An improved process for preparing an aluminium oxide layer by anodic oxidation - Google Patents

An improved process for preparing an aluminium oxide layer by anodic oxidation

Info

Publication number
GB466941A
GB466941A GB2940936A GB2940936A GB466941A GB 466941 A GB466941 A GB 466941A GB 2940936 A GB2940936 A GB 2940936A GB 2940936 A GB2940936 A GB 2940936A GB 466941 A GB466941 A GB 466941A
Authority
GB
United Kingdom
Prior art keywords
bath
oxide layer
preparing
aluminium oxide
anodic oxidation
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
GB2940936A
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.)
VALENTIN LICHOFF
Original Assignee
VALENTIN LICHOFF
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 VALENTIN LICHOFF filed Critical VALENTIN LICHOFF
Priority to GB2940936A priority Critical patent/GB466941A/en
Priority to FR812770D priority patent/FR812770A/en
Publication of GB466941A publication Critical patent/GB466941A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

466,941. Electrolytic surface treatment of aluminium. LICHOFF, V. Oct. 29, 1936, No. 29409. [Class 41] An oxide layer is formed on aluminium by anodic treatment in a non-aqueous bath comprising a solution of boric acid or of an organic acid, such as citric, tartaric, oxalic or lactic acid, in glycerine or glycol, the bath also containing an ammonium compound such as ammonium carbonate. The bath is maintained at 120-140‹ C., and the current density employed is such that the anode attains a temperature of about 200‹ C. Suitable proportions for the bath are 0À5-1À5 parts of the acid and 0À05-0À5 parts of ammonium carbonate to 1 part of the solvent, this producing a viscous medium.
GB2940936A 1936-10-29 1936-10-29 An improved process for preparing an aluminium oxide layer by anodic oxidation Expired GB466941A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2940936A GB466941A (en) 1936-10-29 1936-10-29 An improved process for preparing an aluminium oxide layer by anodic oxidation
FR812770D FR812770A (en) 1936-10-29 1936-10-29 Process for covering aluminum with a layer of aluminum oxide by anodic oxidation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2940936A GB466941A (en) 1936-10-29 1936-10-29 An improved process for preparing an aluminium oxide layer by anodic oxidation

Publications (1)

Publication Number Publication Date
GB466941A true GB466941A (en) 1937-06-08

Family

ID=10291126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2940936A Expired GB466941A (en) 1936-10-29 1936-10-29 An improved process for preparing an aluminium oxide layer by anodic oxidation

Country Status (2)

Country Link
FR (1) FR812770A (en)
GB (1) GB466941A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152221A (en) * 1977-09-12 1979-05-01 Nancy Lee Kaye Anodizing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152221A (en) * 1977-09-12 1979-05-01 Nancy Lee Kaye Anodizing method

Also Published As

Publication number Publication date
FR812770A (en) 1937-05-18

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