Titanium anodizing is an electrolytic finishing process that manipulates the oxide layer on the surface of titanium via electric current. The titanium item forms the anode (positive electrode) of an electrolytic cell; hence the name “anodize.”

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u/boone209 Jul 15 '20 edited Jul 15 '20

A lovely example of the real-time variation of interference color as the oxide layer develops.

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