I'm looking for a procedure to remove the native TiO2 layer from a pure Ti metal sheet (area roughly 1 cm2).
The wet chemical methods I've found so far all dissolve TiO2 while oxidizing the Ti at the same time, thus resulting in a thinner TiO2 layer but are unable to provide an oxide free Ti surface.
Inspiration would be very much appreciated!
Cheers
Sven
Maybe plasma etching using CF4/O2/Ar plasma. See
https://ac.els-cdn.com/S0042207X12004927/1-s2.0-S0042207X12004927-main.pdf?_tid=0c5ed1f0-c978-49f7-aec2-0d44b485346c&acdnat=1527004301_7c28371c85c6fef0bb97ba3160c004ee
May be a biological synthesis will be helpful according to this article.
We used the short-term treatment with a hot HF:HNO3 mixture, 2:3 in volume for several second.
First, thanks for the suggestions!
@Anatoly
And that removed the Oxide? We tried a similar approach (HF:HNO3:H2O 1:1:2) at room temperature, which does remove the TiO2 but also oxidizes the underlying metal, thus a complete removal of the oxide was impossible...
Cheers
Sven
Hello, you can calcinated the materials to 800-1000 degrees to ensure all anatase to transfer to rutile then dissolved it by HF....you can use a very small amount from your sample.
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