Titanium anodization color spectrum - photo

[Altair]

Titanium anodization color spectrum.

Fullsize image: https://diqn32j8nouaz.cloudfront.net...m_fullsize.jpg



Previously:

Coloring titanium with different anodizing voltages - GIF and photo
CNC machining a titanium screw - GIF
Forging titanium domes for deep-submergence vehicle - GIF
Titanium explosion - GIF and video
Anodizing bolts - GIF

[nova_robotics]

It's very interesting that it goes gold -> blue -> gold -> blue -> gold. It's super obvious we're just cycling through wavelengths as the oxide layer grows in thickness. Extremely cool.

MrTitanium.com How Titanium colors work without dye?

I'm not 100% convinced of this explanation because I believe that should cause the colour to change based on the viewing angle. But I think it's mostly right.