Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1608960 | Journal of Alloys and Compounds | 2015 | 5 Pages |
Abstract
Highly ordered zircaloy-4 (Zr-4) oxide nanostructures with nanoporous or nanotubular morphologies are prepared using two-step anodization. The first-step anodization in ethylene glycol (EG) electrolyte containing 0.3Â wt% ammonium fluoride and 0.2Â wt% de-ionized water produced bundled oxide nanotubes on the surface of Zr-4. The as-grown oxide nanotubes obtained by the first-step anodization were detached ultrasonically in ethanol, leaving an ordered concave surface on the Zr-4 substrate. When the Zr-4 substrate with an ordered concave surface was secondly anodized, nanotubes with clear and open top surfaces were fabricated. In addition, the morphologies of the oxide nanostructures could be controlled to have tubular or porous structure only by changing the electrolyte from EG to glycerol in the second anodization.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Ghafar Ali, Yang Jeong Park, Hyun Jin Kim, Sung Oh Cho,