Corrosion Resistance Improvement of Mild Steel Using Cocos Nucifera Leaf Extract in Seawater

Challenges related to corrosion significantly impact the durability and safety of mild steel structures when exposed to aggressive environments like seawater. This research explores the potential of Cocos nucifera leaf extract (CNLE) as a natural inhibitor to enhance the resistance of mild steel against corrosion in seawater. The study employs potentiodynamic polarization and linear polarization resistance techniques to assess the extract’s inhibitory properties. Additionally, it conducts an analysis of inhibition efficiency and adsorption isotherms using the Langmuir model to shed light on the adsorption mechanism. The inhibition efficiency shows an increase with higher extract concentrations, eventually reaching a maximum value. The adsorption isotherm analysis validates the applicability of the Langmuir model, indicating monolayer adsorption and a strong interaction between the inhibitor and mild steel. These findings contribute to the development of environmentally friendly and cost-effective methods for enhancing the longevity and reliability of mild steel materials used in seawater applications.