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Nanoscale titanium oxide (TiO 2 ) coating was deposited on titanium (Ti) disks and Ti dental implants using r.f. magnetron sputtering technique. The coating was characterized using grazing angle X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), contact angle measurement, profilometry and nano-scratch test. The coating also was evaluated with in vitro...
Au, Rh and Au–Rh nanoclusters were studied on one-dimensional titania nanostructures by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and infrared spectroscopy (FT–IR). On titanate nanowire and tube supports the gold 4f 7/2 XP emission appeared after reduction at 83.6 eV and 85.6 eV indicating two different sizes or chemical environments of gold nanoclusters. Small...
Surface treatments on biomaterials using several methods have greatly reduced the in vivo bacterial attachment, surface colonization and formation of biofilm. In this study, the effect of silver (Ag) ion release against in vitro antibacterial activity and cytotoxicity of 1–4wt% Ag doped titania (TiO 2 ) thin film coatings were evaluated. These coatings were deposited for 1–6 h onto stainless...
The crystallization of amorphous thin films was achieved with using a novel technology in which 13.56 MHz RF (radio frequency) plasma is applied to the film samples for few minutes without heating. The key parameter of this plasma crystallization process is the plasma gas pressure. The best plasma gas pressure depends on the plasma gas species and applied RF power and is independent to film materials...
Tungsten-doped titania coatings have been deposited from a Ti-5 at.% W alloy target in HiPIMS mode. The coatings were weakly crystalline and showed mixed anatase/rutile structures in the as-deposited condition. Their photocatalytic activity was assessed in terms of the degradation rate of methylene blue dye. The W-doped coatings showed no improvement in activity, compared to pure titania coatings...
In this study, physical vapour deposition (PVD) method was carried out to prepare nano-titania (TiO 2 ) as an intermediate layer on Mg–Zn–Ce alloy and subsequently electrochemical deposition (ED) method was applied to develop nano-fluorine-doped hydroxyapatite (FHA) as an outer layer. X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR),...
In this study, nanostructured hardystonite (HT) and titania (TiO2)/hardystonite (HT) dual-layered coatings were deposited on biodegradable MgCaZn alloy via physical vapor deposition (PVD) combined with electrophoretic deposition (EPD). Although a single layer nano-HT coating can decrease the corrosion rate from 1.68 to 1.02 mm/year, due to the presence of porosities and microcracks, the nano-HT layer...
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