TiO2 anti-corrosive thin films on duplex stainless steel grown using cathodic cage plasma deposition

Herein, we evaluated the influence of different experimental parameters to obtain high anti-corrosive anatase TiO2 thin films on stainless steel using a simple and low cost cathodic cage plasma deposition technique at low pressure and temperature. The thin TiO2 films were deposited on duplex stainless-steel (dimension). Different mixtures of O2, H2 and Ar were used and further correlated with resulting structural properties and corrosion resistance. The temperature was kept at 450 °C with a deposition time from 1 to 4 h. Raman spectroscopy, grazing incidence X-ray diffraction and a corrosion test were used to evaluate the TiO2 films. A thin TiO2 adherent, crystalline, protective film was obtained when 60% H2/40% Ar was used. Our proposed method to obtain TiO2 films shows promise for use in different industrial applications.