Synergistic inhibition between tween 60 and NaCl on the corrosion of cold rolled steel in 0.5M sulfuric acid

Inhibiting Effects of Rabeprazole Sulfide on the Corrosion of Mild Steel in Acidic Chloride Solution

“…In an exothermic process, both physisorption and chemisorption can be distinguished by considering the absolute value of Δ ads . For physisorption process, Δ ads is lower, that is 40 kJ mol −1 , while that for chemisorption approaches 100 kJ mol −1 [29]. In the present case Δ ads is 58.87 kJ mol −1 , which is an intermediate case clearly specifies the existence of both physical and chemical adsorption.…”

Studies on the inhibition of carbon steel corrosion in hydrochloric acid solution by expired Carvedilol drug

“…Before starting the experiment, the working electrode with an area of 1 cm 2 was treated as in WL experiments and then immersed in a test solution for 30 min until a steady-state open circuit potential (OCP) was attained. The Stern-Geary method (21) used for the determination of corrosion current is performed by extrapolation of anodic and cathodic Tafel lines to a point which gives log i corr and the corresponding corrosion potential (E corr ) for inhibitor free acid and for each dose of drug. All experiments were carried out three times for reproducibility and all measurements were conducted at 25°C.ll measurements were conducted at 25C EIS was carried out at OCP in the frequency range 10 5 -10 −1 Hz, and the AC signal was 0.005 V in amplitude.…”

Tilia leafs as eco-friendly corrosion inhibitor for mild steel in aqueous solutions

“…Tafel polarization curves were determined by polarizing to ± 250 mV with respect to the free corrosion potential (E vs. SCE) at a scan rate of 0.5 mV/s. Stern-Geary method [14] used for the determination of corrosion current is performed by extrapolation of anodic and cathodic Tafel lines to a point which gives log i corr and the corresponding corrosion potential (E corr ) for inhibitor free acid and for each dose of inhibitor. Then i corr was used for calculation of inhibition efficiency (% IE) and surface coverage (θ) as in equation 2:…”