Abstract
This study describes a novel bio-based inhibitor to effectively mitigate the mild-steel (MS) corrosion in the 3.5 wt% NaCl solution. For this purpose, the synergistic effect between the aqueous extract of Trachyspermum Ammi (T.A) seed and divalent zinc cations was thoroughly investigated. The GIXRD, UV–vis, FTIR, and Raman spectroscopy were employed to scrutinize the adsorption of the T.A-Zn2+ complexes on the metal surface. The EIS and potentiodynamic polarization studies also evidenced the outstanding corrosion protection effect of the formed protective layer. EIS results showed 94 % inhibition efficiency in the case of 700:300 ppm Zn:T.A sample.
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