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Effect of some oxadiazoles derivatives on the corrosion of mild steel in hydrochloric acid solution

I.Forsal, A.Elyaktini, M.Ebn Touhami, B.Mernari

The inhibition of the corrosion of mild steel in 1M HCl by 2,5-bis(nmethylphenyl)- 1,3,4-oxadiazole (n-DTOX) has been investigated at 300C using electrochemical and weight loss measurements. The comparative study of oxadiazoles derivatives indicates that the corrosion inhibition of 2,5-bis(3-methylphenyl)-1,3,4-oxadiazole being themost efficient and 2,5- bis(2-methylphenyl)-1,3,4-oxadiazole the least. The associated activation corrosion and free adsorption energies have been determined.