Various unipolar DC pulse waveforms were selected to find the factors for controlling of the anodized titanium surface morphology. The current density, frequency and duty were ranged from 50 mA/cm2 to 750 mA/cm2, from 100 Hz to 400 Hz and from 10% to 50%, respectively. Increase of duty from 10% to 50% at 100 Hz in 0.1 M KOH provides larger pores - from 0.13 μm to 0.19 μm in average for 50 mA/cm2 and 0.15 μm to 0.24 μm for 750 mA/cm2. On the other hand increase of frequency from 100 Hz to 400 Hz at 50% duty provides smaller pores - from 0.19 μm to 0.17 μm for 50 mA/cm2 and 0.24 μm to 0.17 μm for 750 mA/cm2. Both duty and frequency are important factors to control the anodized titanium surface morphology.
Bibliographical noteFunding Information:
This work was supported by a grant (code#: 06K1501-01620) from the Center for Nanostructured Materials Technology under the 21st Century Frontier R&D Program of the Ministry of Science and Technology, Korea.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry