Aluminum naturally forms an oxide layer ... leading to the bright colors you often see on anodized pieces. In this process, the lye is used to strip the surface. Then it’s on to anodization ...

Anodizing is an electrochemical process some jewelers use to change the color of metals such as titanium, aluminum, and niobium. Dipping a reactive metal into a "bath" mixture of low-sudsing ...

But this hack that shows you how to anodize titanium in your home laboratory (or kitchen for that matter) and it might help the metal make its way into a future project. It seems the process is ...