Corrosion performance of TiO2 coated type 304L stainless steel in nitric acid medium

Effect of heat treatment temperature on the performance of nano-TiO2 coating in protecting 316L stainless steel against corrosion under UV illumination and dark conditions

“…The physical properties of the TiO 2 coatings strongly depend on the fabrication method which can be physical vapor deposition [24,25], chemical vapor deposition [26], plasma electrolytic deposition [27], plasma spray [28], electrochemical deposition [29], microwave activated chemical bath deposition [30] and sol-gel process [11,18,31,32]. Among these methods, sol-gel has extensively attracted the researches' attention due to its advantages including low processing temperature, simplicity, excellent homogeneity, possibility to control particle size and morphology, ability to coat large and complex shapes, and easy control of film thickness.…”

Stoichiometric titanium dioxide ion implantation in AISI 304 stainless steel for corrosion protection

“…It consists of a resistor R s -representing the resistance of the electrolyte -in series with a RQ circuit. Q is a constant phase element (CPE) and is used instead of a capacitor as it is recommended in literature [20,9] due to the non-ideal behavior of the capacitance of oxide layers. In particular, for very low frequencies the fit of the data becomes more accurate by using a CPE.…”

“…This simple model fits accurately to data of all samples except of those with a fluence of 5 Â 10 17 cm À2 (Ti + ). Any extension of this model by another RC or RQ component, to account for the resistance of a galvanic barrier [10,13,9], would lead to higher uncertainty of the fitted parameters and therefore compromise the accuracy of the model. Despite the absence of a clearly modelled resistance for the galvanic barrier alone, the double layer charge transfer resistancewhich ideally represents only the resistance for chemical reactions on the surface -was used to assess the corrosion performance.…”

“…oxides) or by alloying the surface with elements that increase the formation of the natural passivation layer of the steel. While the applicability for corrosion protection of a lot of elements and compounds, like N, Ni, Cr, Mo, Si, Ce, Y, Er, ZrN, TiN was proved using various coating or surface modification techniques (PVD, arc plasma deposition, plasma nitriding, ion implantation) [2][3][4][5][6][7][8], one material in particular gets increasing interest in corrosion science: Titanium dioxide [9][10][11][12][13]. In addition to its property as a photocatalyst, titanium dioxide is especially distinguished in its capacity as a highly chemical inert oxide.…”

“…In addition to its property as a photocatalyst, titanium dioxide is especially distinguished in its capacity as a highly chemical inert oxide. Typically TiO 2 is deposited on steel via sol-gel or sputtering [14,9]. Associated with these deposition techniques is the appearance of porosity, cracking and delamination of the coating, which can significantly reduce the corrosion protection properties and bond strength to stainless steel when it is connected with CFRP.…”