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Journal of Materials Science

, Volume 42, Issue 16, pp 6729–6734 | Cite as

Macro, micro and nanostructure of TiO2 anodised films prepared in a fluorine-containing electrolyte

  • Angkhana Jaroenworaluck
  • Domenico RegoniniEmail author
  • Chris R. Bowen
  • Ron Stevens
  • Duncan Allsopp
Article

Abstract

The paper presents an electron microscopy study of the macro, micro and nanostructure of titania nano-tubes formed by electrochemical anodisation of titanium in a fluorine containing electrolyte. Scanning electron microscopy (SEM) is used to examine the overall structure of the nano-tubes formed under potentiostatic conditions. Transmission electron microscopy (TEM) has been used to examine the structure of the oxide layer of a sample anodised for a relatively short period (30 min) and provides a new insight into the formation of titania nano-tubes. The fluorine ions are able to nucleate sites on the titanium metal and generate a series of interconnected cavities or pores in the oxide complex formed, allowing current to flow within this film. Under specific conditions the cavities and randomly dispersed pores can align in the direction of the applied electric field and link up to generate an array of tubes, where the passage of ions and water is optimised. We also suggest that oxygen evolution at the anode may play a role in the development of the nano-tubes.

Keywords

TiO2 Anodic Oxide Cavity Wall Chemical Dissolution Anodic Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The Royal Academy of Engineering, The Worshipful Company of Armourers and Brasiers and Novelis are gratefully acknowledged for the financial contribution provided in support of this work. The Nanotechnology Centre of the Cranfield University is also acknowledged for FE-SEM measurements.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Angkhana Jaroenworaluck
    • 1
  • Domenico Regonini
    • 2
    Email author
  • Chris R. Bowen
    • 2
  • Ron Stevens
    • 2
  • Duncan Allsopp
    • 3
  1. 1.MTEC: National Metal and Materials Technology CenterKlong LuangThailand
  2. 2.Materials Research Centre, Department of Mechanical EngineeringUniversity of BathBathUK
  3. 3.Department of Electronic & Electrical EngineeringUniversity of BathBathUK

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