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GB2012814A - Aluminium articles having anodic oxide coatings and methods of colouring them by means of optical interference effects - Google Patents

Aluminium articles having anodic oxide coatings and methods of colouring them by means of optical interference effects

Info

Publication number
GB2012814A
GB2012814A GB7900897A GB7900897A GB2012814A GB 2012814 A GB2012814 A GB 2012814A GB 7900897 A GB7900897 A GB 7900897A GB 7900897 A GB7900897 A GB 7900897A GB 2012814 A GB2012814 A GB 2012814A
Authority
GB
United Kingdom
Prior art keywords
anodic oxide
optical interference
colouring
methods
interference effects
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.)
Withdrawn
Application number
GB7900897A
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.)
Alcan Research and Development Ltd
Original Assignee
Alcan Research and Development Ltd
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 Alcan Research and Development Ltd filed Critical Alcan Research and Development Ltd
Priority to GB7900897A priority Critical patent/GB2012814A/en
Publication of GB2012814A publication Critical patent/GB2012814A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/04Anodisation of aluminium or alloys based thereon
    • C25D11/12Anodising more than once, e.g. in different baths
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/04Anodisation of aluminium or alloys based thereon
    • C25D11/18After-treatment, e.g. pore-sealing
    • C25D11/20Electrolytic after-treatment
    • C25D11/22Electrolytic after-treatment for colouring layers

Landscapes

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

Abstract

The invention provides aluminium articles having porous anodic oxide films coloured by means of an optical interference effect. In Figure 4, the article 10 carries a first anodic oxide film 12 with pores 14 enlarged at their inner ends 20 and containing inorganic pigmentary deposits 22. The products may be made by growing a second anodic oxide film 26 underneath the deposits 22 either simultaneously or subsequently, using A.C.X is at least 26 nm, Y is preferably at least 60 nm, Z is preferably 15 nm to 200 nm, (Y + Z) is preferably 75 nm to 600 nm, and W is preferably at least 15 nm. The pigmentary deposits are preferably of material containing one or more of Sn, Ni, Co, Cu, Ag, Cd, Fe, Pb, Mn and Mo, e.g. Sn-Ni, Cu-Ni, Cu-Co, Cu-Mn, Mn-Ni, Ni-Mo or Mn-Co. <IMAGE>
GB7900897A 1978-01-17 1979-01-10 Aluminium articles having anodic oxide coatings and methods of colouring them by means of optical interference effects Withdrawn GB2012814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7900897A GB2012814A (en) 1978-01-17 1979-01-10 Aluminium articles having anodic oxide coatings and methods of colouring them by means of optical interference effects

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB187578 1978-01-17
GB7900897A GB2012814A (en) 1978-01-17 1979-01-10 Aluminium articles having anodic oxide coatings and methods of colouring them by means of optical interference effects

Publications (1)

Publication Number Publication Date
GB2012814A true GB2012814A (en) 1979-08-01

Family

ID=26237045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7900897A Withdrawn GB2012814A (en) 1978-01-17 1979-01-10 Aluminium articles having anodic oxide coatings and methods of colouring them by means of optical interference effects

Country Status (1)

Country Link
GB (1) GB2012814A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0121361A1 (en) * 1983-03-31 1984-10-10 KAISER ALUMINUM &amp; CHEMICAL CORPORATION Colouring process for anodized aluminium products
EP4194590A1 (en) * 2021-12-09 2023-06-14 Aalberts Surface Technologies GmbH Method and composition for selective anodisation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0121361A1 (en) * 1983-03-31 1984-10-10 KAISER ALUMINUM &amp; CHEMICAL CORPORATION Colouring process for anodized aluminium products
EP4194590A1 (en) * 2021-12-09 2023-06-14 Aalberts Surface Technologies GmbH Method and composition for selective anodisation
US12065753B2 (en) 2021-12-09 2024-08-20 Aalberts Surface Technologies Gmbh Method and composition for selective anodization

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)