Inhibitive effect of some thiadiazole derivatives on C-steel corrosion in neutral sodium chloride solution

Inhibition of corrosion of carbon steel in well water by arginine-Zn2+ system

“…This may be explained by the fact that weight loss study is the result of 7 days whereas electrochemical studies are an instantaneous study. Similar observations were already reported [37][38][39][40][41][42][43][44][45].…”

“…AC impedance spectra (electrochemical impedance spectra) have been used to confirm the formation of a protective film on the metal surface [43][44][45]. If a protective film is formed on the metal surface, charge transfer resistance (R t ) increases; double layer capacitance value (C dl ) decreases and the impedance log (Z/Ω) value increases.…”

Synthesis and assessment of new cationic gemini surfactants as inhibitors for carbon steel corrosion in oilfield water

“…28 Surface roughness is attributed to the eating away of local sites on electrode surface. 22 For oileld water inhibited by gemini surfactants, the straight line appearing at LF region in blank solution turns to take the shape of an arc whose angle increases with inhibitor concentration (till a critical value) due to the increase in the degree of surface coverage (q) by inhibitor molecules. 29 Above the critical concentrations, the arcs are lowered again indicating that corrosion protection has decreased again.…”

“…Thermodynamic activation parameters have an important role in understanding the inhibitive mechanism of organic additives. 22 The apparent activation energy associated with Csteel corrosion in free and inhibited solutions of oileld water was determined using Arrhenius plot ( Fig. 9(a)) according to the following equation:…”

“…Langmuir isotherm assumes that the solid surface contains a xed number of adsorption sites and each site holds one adsorbed species 22 and there are no interactions between the adsorbed molecules on the metal surface. 40 Langmuir plot is drawn based on the data obtained from weight loss, EIS and polarization techniques (Fig.…”