Coating of Titania Nanoparticles on Stainless Steel Using an ‎Alkoxide Precursor ‎

Uniform nanostructure coating of ‎TiO2 was prepared on 316L ‎stainless steel by sol-gel method ‎using Tetra-n-Butyle Titanat (TBT) ‎as alkoxide material. 316L ‎specimens were coated with the ‎mentioned sol by dip coating ‎method. The influences of ‎preparation condition, pH of sol ‎on TiO2 nanostructure coating ‎were investigated. Their structural ‎properties were examined at ‎various calcination temperatures. ‎The effect of drying cycle and ‎solvent bath on crack reduction ‎and the influence of withdrawal ‎speed on thickness of the film was ‎evaluated. Choosing of alcohol as ‎a drying atmosphere could hinder ‎the cracks formation. 400°C was ‎desirable temperature to obtain ‎nanoparticles from anatase phase. ‎At this temperature it was found ‎that TiO2 films exhibited a uniform ‎anatase structure with particle size ‎of about 15 nm. ‎