Use of the experimental designs as an approach to optimize the inhibition efficiency of a Pyridazine derivative against corrosion of steel in an acidic medium

Abstract

In this manuscript, our aim was to optimize the inhibitory performance of a pyridazine derivative against steel corrosion in a 1M HCl solution. The percentage of inhibitor efficiency depends on various parameters, including inhibitor concentration, solution temperature, and immersion time. Using the Dohlert matrix and NemrodW software, we conducted a study to determine the most influential parameters affecting the corrosion phenomenon. Based on preliminary knowledge, we selected three parameters: inhibitor quantity, immersion time, and temperature. We evaluated the inhibitory efficiency by analyzing the Potentialdynamic intensity-potential curves and discussing the results obtained. Experimental designs offer benefits such as reducing the number of tests and detecting interactions between factors. By following the experimental design methodology, we aimed to determine the best conditions to obtain maximum inhibitor efficiency while reducing the number of required tests.