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RHEED characterisation of the near surface microstructure of Ti-O based biocompatible coatings

Marlafeka, S.; Grant, D.M.; Brown, Paul D.

Authors

S. Marlafeka

D.M. Grant

Paul D. Brown



Contributors

Stephen McVitie
Editor

David McComb
Editor

Abstract

Mechanically polished, annealed, nitric acid treated and aged in boiling water after nitriding, commercially pure Ti substrates have been characterised using reflection high-energy electron diffraction (RHEED) and secondary electron imaging, in terms of their naturally formed or ‘accelerated’ oxide layers. Annealing induced crystallisation and transformation of anatase to the rutile phase and led to increased roughness, with localised fracture and balling up of the surface oxide layer as the time and temperature of annealing were increased. Nitric acid modification produced no influence on the anatase to rutile transformation, whilst further aging in boiling water induced an acceleration of this transformation. RHEED data acquired at differing accelerating voltages have indicated a Ti-O phase gradation within annealed sol-gel derived V modified TiO2 layers deposited by spin coating onto Ti substrates.

Peer Reviewed Peer Reviewed
Issue 179
Series Title Institute of Physics conference series
Book Title Electron Microscopy and Analysis 2003: Proceedings of the Institute of Physics Electron Microscopy and Analysis Group Conference, University of Oxford, 3-5 September 2003
ISBN 750309679
APA6 Citation Marlafeka, S., Grant, D., & Brown, P. D. RHEED characterisation of the near surface microstructure of Ti-O based biocompatible coatings. In D. McComb, & S. McVitie (Eds.), Electron Microscopy and Analysis 2003: Proceedings of the Institute of Physics Electron Microscopy and Analysis Group Conference, University of Oxford, 3-5 September 2003Institute of Physics Publishing
Keywords RHEED
Titanium
TiO2
Biocompatible
Related Public URLs http://iopscience.iop.org/
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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Inst._Phys._Conf._Ser._179_(2004)_pp_155-158.pdf (307 Kb)
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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