Coating of Titania Nanoparticles on Stainless Steel Using an Alkoxide Precursor

Uniform nanostructure coating of tio: was prepared on 316l stainlesssteel by sol-gel method using tetra-n-butyle titanat (tbt) as alkoxidematerial. 316l specimens were coated with the mentioned sol by dipcoating 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 ,prog. color colorants coal.