I have a question about anodic oxidation of Ti metal.
I used Ti metal (3 cm x 3 cm x 1 mm) as an anode and SUS (stainless steel) as a cathode. And electrolyte consists of H2SO4 (0.5 M, final concentration and HF (0.35 - 0.5 %, final concentration). The distance between two electrodes is about 1 cm and volatge is applied for 3.5 h with continuous stirring.
The question is TiO2 nanotubes are usually formed at the interface between Ti and electrolyte NEAR AIR (the boundary). Sometimes, TiO2 nanotubes are formed in the region dipped in the electrolyte.
Why this occurs?
Dear MJ Kim,
Please go through following articles, which may help you.
Electrochimica Acta 117 (2014) 329–335
The Effect of Electrolyte Composition on the Fabrication of Self-Organized Titanium Oxide Nanotube Arrays by Anodic Oxidation
DOI: 10.1557/JMR.2005.0020
Volume 95, November 2017, Pages 539-545
- Badges
- Science topic
- Similar topics
- Engineering
- Electrical Engineering
- Electrodes