Matvey titanium products anodic oxidation effect sharing
Release time:
2024-10-18
The principle of anodic oxidation of titanium surface color is mainly through the electrochemical process to form a layer of titanium oxide film on the surface of titanium. In the anodic oxidation process, titanium acts as an anode and reacts with the electrolyte to produce a titanium oxide (TiO₂) film. The thickness of this film can be controlled by adjusting the current density and the oxidation time.
Different thickness of the oxide film will cause the interference effect of light, resulting in different colors. Specifically, when the thickness of the oxide film is in the nanometer level, it will interfere according to the wavelength of light, so that light of different wavelengths will produce different colors when reflected. By adjusting the oxidation conditions, a variety of colors from transparent to dark can be obtained, common ones including blue, purple, gold, etc.
The gold color shown in the figure is the color exhibited by anodizing at 55V, and the blue-violet color is the color exhibited by anodizing at 75V.
It should be noted that the surface color effect of anodic oxidation of titanium materials will be affected by the surface finish. This is because the area where the oxide film is attached under different finish conditions will be different, and the lower the finish, the darker the color will be after oxidation.
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