Electrolytic colouring of anodised aluminium by means of...

Details Electrolytic colouring of anodised aluminium by means of... Electrolytic colouring of anodised aluminium by means of...

C - Chemistry, Metallurgy

25

D

204/24.6

C25D 11/04 (2006.01) C25D 11/12 (2006.01) C25D 11/22 (2006.01)

Patent

CA 1131160

A B S T R A C T In a process for the electrocolouring of anodised aluminium in which colours are obtained by interference effects the pores of an anodic oxide film, produced by D.C. anodising in sulphuric acid, are enlarged by electrolytic treatment in an acid electrolyte having a high dissolving power for aluminium oxide under alternating current conditions.

319821

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