GB558926A - Improvements in and relating to treating aluminium and aluminium base alloy surfaces in preparation for applying an adherent coating to them - Google Patents

Improvements in and relating to treating aluminium and aluminium base alloy surfaces in preparation for applying an adherent coating to them

Info

Publication number
GB558926A
GB558926A GB1031542D GB1031542D GB558926A GB 558926 A GB558926 A GB 558926A GB 1031542 D GB1031542 D GB 1031542D GB 1031542 D GB1031542 D GB 1031542D GB 558926 A GB558926 A GB 558926A
Authority
GB
United Kingdom
Prior art keywords
coating
aluminium
applying
base alloy
treating
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
GB1031542D
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1031542D priority Critical patent/GB558926A/en
Publication of GB558926A publication Critical patent/GB558926A/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
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C25D5/42—Pretreatment of metallic surfaces to be electroplated of light metals
    • C25D5/44—Aluminium
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/60—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using alkaline aqueous solutions with pH greater than 8
    • C23C22/66—Treatment of aluminium or alloys based thereon
    • C23C22/67—Treatment of aluminium or alloys based thereon with solutions containing hexavalent chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

558,926. Coating and pickling metals; electrolysis; etching. BOWEN, E. WINDSOR-. July 23, 1942, No. 10315. [Class 82 (ii)] [Also in Groups III, XVI and XXXVI] In the treatment of an aluminium or aluminium base alloy surface, preparatory to applying an adherent coating, the surface is first treated with an alkali metal carbonate-chromate aqueous solution also containing an alkali metal chlorate to produce an oxide coating and, optionally, to etch the surface and then removing the oxide: coating by treating with an aqueous solution of an acid. If a paint, enamel or lacquer coating is to be applied a chromic acid solution is used, but if a metallic coating is to be applied, e.g. an electrodeposited coating of nickel, nitric acid is used. Specification 528,748 is referred to.
GB1031542D 1942-07-23 1942-07-23 Improvements in and relating to treating aluminium and aluminium base alloy surfaces in preparation for applying an adherent coating to them Expired GB558926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1031542D GB558926A (en) 1942-07-23 1942-07-23 Improvements in and relating to treating aluminium and aluminium base alloy surfaces in preparation for applying an adherent coating to them

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1031542D GB558926A (en) 1942-07-23 1942-07-23 Improvements in and relating to treating aluminium and aluminium base alloy surfaces in preparation for applying an adherent coating to them

Publications (1)

Publication Number Publication Date
GB558926A true GB558926A (en) 1944-01-27

Family

ID=9965604

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1031542D Expired GB558926A (en) 1942-07-23 1942-07-23 Improvements in and relating to treating aluminium and aluminium base alloy surfaces in preparation for applying an adherent coating to them

Country Status (1)

Country Link
GB (1) GB558926A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116454A (en) * 1982-03-13 1983-09-28 Bl Tech Ltd Coating sheets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116454A (en) * 1982-03-13 1983-09-28 Bl Tech Ltd Coating sheets

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