Experimental Investigation on the Corrosion Inhibition Potentialof Benzotriazole for Carbon Steel in HCl

Corrosion can occur in various industries, including the oil and gas industry, causing great damage.In this work, the inhibition of corrosion processes using benzotriazole reagent was studied in a solutionof hydrochloric acid (one molar) on samples of carbon steel. The effect of inhibitor concentration andtemperature on the corrosion rate (CR) and inhibition efficiency (IE) has been experimentally evaluated.Then, new models were obtained using the response surface method (RSM), and the influence of theseparameters was investigated with their help. The results showed that as the inhibitor concentrationincreased from ۲۰ to ۱۵۰ ppm, CR and IE changed from ۵ to ۱ mm/y and from ۵۰ to ۹۰%, respectively.This shows the importance of optimal inhibitor concentrations. In addition, the temperature has a stronginfluence on the effectiveness of benzotriazole corrosion inhibition. Moreover, the results of numericaloptimization indicated that the lowest CR and highest IE of ۱.۰۲۴ mm/y and ۹۱.۵۲۵% were observed at۱۵۵ ppm and ۲۵ °C.

کلیدواژه ها:

Temperature ، Inhibitor concentration ، RSM ، Inhibition efficiency ، Optimization