2025, Vol. 7, Issue 1, Part B

Author(s): Wagh Vitthal Bhagaji and Bharat Gangadhar Kardak

Abstract: Corrosion of iron and its alloys remains one of the most critical challenges in industrial, infrastructural, and environmental contexts. Conventional synthetic inhibitors, although widely used, present significant drawbacks due to their toxicity, high costs, and ecological risks, necessitating the exploration of sustainable alternatives. In recent years, green inhibitors—derived from plant extracts, biomolecules, and agricultural wastes—have emerged as effective and environmentally benign solutions. This review consolidates existing research on the mechanisms, efficiency, and applicability of natural corrosion inhibitors for iron and steel systems. Emphasis is placed on adsorption processes, protective film formation, and the influence of phytochemicals such as flavonoids, tannins, alkaloids, and amino acids. Reported inhibition efficiencies often exceed 80–90%, demonstrating strong potential for industrial application in acidic, neutral, and saline environments. The discussion further highlights the comparative advantages of green inhibitors over synthetic chemicals, including biodegradability, renewability, and alignment with sustainability principles. However, the review also identifies persistent challenges, such as variability in natural composition, limited stability under extreme conditions, and lack of standardized testing protocols. Advances in surface characterization, computational modeling, and synergistic formulations suggest promising pathways for optimizing the performance of green inhibitors. Overall, the findings affirm that green inhibitors offer not only a technical solution to corrosion but also contribute to global sustainability goals by promoting eco-friendly materials science. This review provides a critical foundation for future research and industrial adoption of green inhibitors in corrosion protection strategies.

DOI: 10.33545/27068919.2025.v7.i1b.1661

Pages: 143-149 | Views: 411 | Downloads: 43

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