INSIGHT INTO ANTI-CORROSION EFFECT OF MAMMILLARIA PROLIFERA FRUIT EXTRACT AS A GREEN INHBITOR FOR MILD STEEL IN HCl SOLUTION

Abstract

In this study, it was aimed to examine the adsorption and corrosion behaviours of the aqueous extract of Mammillaria prolifera, a cactus fruit, in 1.0 M HCl solution using experimental methods such as potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Mammillaria prolifera is a cactus species from the Cactaceae family, commonly known as Texas nipple cactus. Experiments were realized for aqueous extracts of four different Mammillaria prolifera fruits. The results indicate that the aqueous extract solution of cactus fruit has outstanding anti-corrosive performance of over 90% at the optimum concentration of 0.120% (w/v). In addition to electrochemical experiments, FE-SEM surface images were taken as another indicator of high inhibition. The results showed that the mild steel surface immersed in the inhibited electrolyte solution at 298 K after one-hour exposure did not contain cracks, pits or deformations compared to the inhibitor-free surface. As a result, experimental measurements and FE-SEMsurface images support each other.

Keywords

• Mammillaria prolifera
• Green inhibitor
• Adsorption
• Mild steel
• EIS.

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