THE ELECTROLYTIC COLOURING OF ANODIZED ALUMINIUM BY MEANS OF OPTICAL INTERFERENCE EFFECTS
Anodized aluminium having an anodic oxide film of at least 3 microns thickness is colored by electrolytically depositing inorganic pigment from metallic salt solutions, particularly nickel, cobalt, tin and copper salts and mixtures. The pigment deposits are characterized by outer ends of an average...
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