What is anodizing and how does it work? | Protolabs Network

Anodic oxidation 101: Every thing you need to know about Anodizing

Titanium Anodizing | ChemTalk

This is "Titanium Anodizing". It's a dye-free process which uses electricity and oxygen to increase the layer of oxide on the metal part. Different colors correspond with different applied voltages. The process is creating titanium oxide in varying thicknesses which creates varying colors.