Non-Hazardous Cerium Nitrate and Tannic Acid Polyphenolic Molecules As A Corrosion Inhibitor on the Surface of Mild-Steel

The generation of novel inhibitive molecules that can compete with harmful conventional chromium ones remains a serious challenge in corrosion engineering [1-3]. the present study aims to develop a newfangled natural compound to hinder the aggressive economic consequences of steel corrosion. to this end, the synergistic effects of the eco-friendly cerium nitrate on the corrosion retardation ability of the tannic acid (taa) were examined for the metal specimens subjected to the saline (nacl containing) solution. the adsorption of the taa molecules and ce:taa complex on the metal substrate was evaluated by ftir analysis. the surface properties of the samples were analyzed via sem, uv-vis spectroscopy, gixrd, afm, contact angle, and the raman spectroscopy techniques. the effectiveness of the ce:taa mixture on the mild steel (ms) corrosion retardation was deeply examined through the eis and polarization techniques. the results showed that the minimum corrosion current density (icorr = 0.539) and the maximum total corrosion resistance (rt ~ 22 kohm.cm2) were observed for the samples immersed in the ce:taa mixture (with the 1:1 mass ratio). the contact angle of steel samples immersed in the saline solution containing ce:taa mixtures increased at least threefold. the inhibition efficiency of independent ce and taa inhibitors in the saline solution was measured around 74-92 % and -16-64%, respectively.

Non-hazardous cerium nitrate and tannic acid polyphenolic molecules as a Corrosion inhibitor on the surface of mild-steel

The generation of novel inhibitive molecules that can compete with harmful conventional chromium ones remains a serious challenge in corrosion engineering [1-3]. The present study aims to develop a newfangled natural compound to hinder the aggressive economic consequences of steel corrosion. To this end, the synergistic effects of the eco-friendly cerium nitrate on the corrosion retardation ability of the tannic acid (TAA) were examined for the metal specimens subjected to the saline (NaCl containing) solution. The adsorption of the TAA molecules and Ce:TAA complex on the metal substrate was evaluated by FTIR analysis. The surface properties of the samples were analyzed via SEM, UV-Vis spectroscopy, GIXRD, AFM, contact angle, and the Raman spectroscopy techniques. The effectiveness of the Ce:TAA mixture on the mild steel (MS) corrosion retardation was deeply examined through the EIS and polarization techniques. The results showed that the minimum corrosion current density (icorr = 0.539) and the maximum total corrosion resistance (Rt ~ 22 Kohm.cm2) were observed for the samples immersed in the Ce:TAA mixture (with the 1:1 mass ratio). The contact angle of steel samples immersed in the saline solution containing Ce:TAA mixtures increased at least threefold. The inhibition efficiency of independent Ce and TAA inhibitors in the saline solution was measured around 74-92 % and -16-64%, respectively.