To develop inhibitors against corrosion of mild steel in hydrochloric acid

In this study, 3-Amino-5-methylisoxazole (3A5M), 5-Amino-3-methylisoxazole (5A3M) of 0,1 M HCl solution in the mild steel (MS), the corrosion inhibition effect of electrochemical impedance spectroscopy, current-potential curves depending on the concentration and different immersion were determined. The molecular structure of the substance on an electrode surface the adsorption behavior and position of functional groups were determined. 1,0 × 10-2 M 3A5M and 5A3M in 0,1 M HCl solutions mild steel electrode potential of zero charge determined by EIS method. 1,0 × 10-2 M 3A5M containing 0,5 M HCl M and 0,1 M HCl solutions, mild steel electrode immersion time of 4 hours, the solution concentration and surface images were obtained. Results investigated the inhibitory substances on the surface of mild steel creates a disappeared protective film over time and showed that a moderate activity.