Microstructural characterisation of biocompatible sol-gel derived vanadium doped TiO2 on Ti substrates
Marlafeka, S. and Allison, F. and Grant, D.M. and Harrison, P.G. and Brown, Paul D. (2001) Microstructural characterisation of biocompatible sol-gel derived vanadium doped TiO2 on Ti substrates. In: Electron microscopy and analysis 2001: proceedings of the Institute of Physics Electron Microscopy and Analysis Group Conference, University of Dundee, 5-7 September 2001. Institute of Physics conference series (168). IOP Publishing Ltd, Bristol, pp. 381-384. ISBN 9780750308120
Sol-gel derived pure titania is compared with vanadium and / or aluminium modified titania deposited by spin coating on pure titanium substrates annealed at 300C and 650C. Reflection high-energy electron diffraction indicated the presence of anatase from the surface layers of samples annealed at 300C with a transition to rutile with increasing annealing temperature and addition of vanadium. Cross-sectional transmission electron microscopy indicated a gradation of Ti-O phases through the layer with the dominant presence of rutile. Aluminium was found to inhibit grain growth while vanadium promoted crystallisation.
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