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| Title: | Preparation and characterisation of TiO2 thick films fabricated by anodic oxidation in sulphuric acid |
| Authors: | H. Z., Abdullah
C. C., Sorrell |
| E-mail: | hasan@uthm.edu.my
c.sorrell@unsw.edu.au |
| Keywords: | Anodic oxidation
TiO2
Oxide films
Films
International Conference on X-Rays & Related Techniques in Research & Industry (ICXRI) |
| Issue Date: | 9-Jun-2010 |
| Publisher: | Universiti Malaysia Perlis |
| Department: | School of Materials Engineering & School of Environmental Engineering |
| Citation: | p.217-222 |
| Series/Report no.: | Proceedings of the International Conference on X-Rays & Related Techniques in Research & Industry (ICXRI) 2010 |
| Abstract: | Anodic oxidation is an
electrochemical method for the production
of oxide films on metallic substrates. It
involves the application of an electrical bias
at relatively low currents while the substrate
is immersed in an acid bath. The resultant
oxide films can be very dense and stable,
showing a variety of colours and
microstructural characteristics. In the present
work, thick films of the anatase and rutile
polymorphs of TiO2 were formed on highpurity
Ti foil (50 m thickness) using
sulphuric acid solutions (1.5 M H2SO4). The
conditions of oxidation involved the
application of potentials (5 to 350 V) and
current densities (5 to 60 mA.cm-2) for 10
min at room temperature. The films were
characterised using a digital photography,
laser Raman microspectroscopy, and field
emission scanning electron microscopy
(FESEM). The thicknesses of the oxide
films on Ti were measured using a thin film
analyser based on optical spectroscopy
principles. The phase formation, colours,
thicknesses, and microstructures of the films
depended strongly on the applied voltage
and current density. At a standard bias of
150 V, single-phase anatase was observed to
form on Ti at low current density (5 mA.cm-
2) but, at higher current densities (up to 60
mA.cm-2), increasing rutile formation was
observed. |
| Description: | International Conference on X-Rays and Related Techniques in Research and Industry (ICXRI 2010) jointly organized by Universiti Malaysia Perlis (UniMAP) and X-Ray Application Malaysia Society (XAPP), 9th - 10th June 2010 at Aseania Resort Langkawi, Malaysia. |
| URI: | http://hdl.handle.net/123456789/10192 |
| ISBN: | 978-967-5760-02-0 |
| Appears in Collections: | Conference Papers
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