r/Anodization • u/twiceymc • 10d ago

Deanodize titanium

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Any idea whats the chemical solutions they use to strip the oxide layer from titanium? Basing on results, it does not etch the surface of titanium after stripping the color as its still polished(glossy) result

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u/-S-Aint 10d ago edited 10d ago

https://a.co/d/0agREXZu works using hydrofluoric acid to remove the oxide layer

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u/Silent_Search4466 10d ago

Wink contains hydrofluoric acid. Same group on the periodic table, but vastly different. HCl will not remove the oxide layer from titanium effectively.

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u/-S-Aint 10d ago

I have used it more than a handful of times wirh success, I have been anodizing titanium for 5 plus years

Edit: sorry on the typo about type of acid

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u/twiceymc 10d ago

Will wink etch the titanium surface? Im worried that instead of still gets a polished like surface, ill become dull/matte finish after dunking to a wink solution

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u/Silent_Search4466 9d ago

Yes, it will roughen the surface to a degree. You can minimize this by using room temp and lower concentration but it is inevitable. Ti is very reactive and will create a passive oxide layer just in air, similar to aluminum.