Trizma as an Eco-Friendly Efficient Inhibitor For the Acidic corrosion of Steel : Experimental and Computational Studies

The corrosion inhibition of steel by Trizma in 1.0 M HCl was investigated chemical and electrochemical techniques. The results showed that an eco-friendly Trizma act as mixed type inhibitor and gives efficiently 93.7% percent inhibition. The XRD and SEM results obtained that the surface of the steel contains Trizma molecules. Flory–Huggins isotherm, and the Kinetic–thermodynamic model are applicable and showed that the adsorption process of Trizma on the steel surface is cooperative (Chemical-Physical). The DFT method were investigated to correlate molecular properties of the studied Trizma with the experimental inhibition efficiency.