Titanium and titanium alloy anodizing is a surface modification technology that uses titanium as an anode, inert metal as a cathode, and a special neutral solution as an electrolyte. The anode surface is oxidized by electrochemical reaction to form an oxide film.
Why do we see various colors after anodizing titanium and titanium alloys?
When we place the titanium workpiece in the electrolyte, the titanium element is oxidized into titanium dioxide and other titanium oxide films through the control of voltage and current. This film layer forms light interference under the reflection and refraction of light, so you can see the different colors of titanium anodized. The thickness of this titanium oxide layer is different, resulting in different light interference, which ultimately allows us to see various colors.
The thickness of the titanium anodized film layer can be controlled by the voltage and current, so that we can complete the processing of titanium in various colors in batches. This is also different from aluminum alloys, which need to add various pigments to control the color. After titanium forms an oxide film on the surface through anodization, it not only has bright color but also good corrosion resistance. It is widely used in medical implants. It can largely solve the problem of metal ion dissolution, reduce cytotoxicity, and greatly improve the biocompatibility of implanted titanium. Implanted bone screws/bone plates/implanted teeth all have the application of titanium surface anodization. Therefore, titanium surface anodization is a non-toxic and harmless surface modification technology that can make the titanium surface more stable.
Non-Ferrous Crucible Inc. provides a variety of commercial Pure Titanium (CP Ti) and Titanium alloys in wire, sheet, bar, tube, and other forms. We also provide Titanium expanded/stamped mesh, Titanium wire mesh, Titanium fittings, Titanium flange, and Titanium machining components. Please send your request to inquiry.crucible@winnewtech.com.