review · Bulletin of the National Research Centre/Bulletin of the National Research Center
Mild steel serves as a widely used material across construction, manufacturing, and engineering owing to its affordability and stability. However, exposure to corrosive media causes spontaneous deterioration, undermining structural strength, appearance, and operational performance while creating economic, safety, and environmental challenges. To prevent this degradation, chemical inhibitors are commonly added to protective fluids for temporary shielding. Conventional synthetic inhibitors, whether organic or inorganic, present significant toxicity risks to humans and the broader environment, restricting their contemporary usage. Consequently, research and industrial interest are moving towards green corrosion inhibitors derived from plant origins. Diverse plant sources demonstrate effective inhibition against mild steel deterioration in corrosive conditions. Key factors influencing the protective performance of these natural alternatives include the concentration of the plant extract applied and the operating temperature of the environment.
Mild steel is fundamental to infrastructure and industrial manufacturing, but corrosion causes severe economic losses and hazards. While chemical inhibitors can slow deterioration, many conventional options are toxic to humans and wildlife. Understanding plant-derived alternatives helps identify safer, environmentally benign methods to preserve critical metallic infrastructure without relying on hazardous synthetic compounds.
Plant-based inhibitors offer potential applications for formulating non-toxic corrosion-inhibiting fluids used in construction, engineering, and manufacturing. Industrial users seeking to replace hazardous synthetic chemicals could benefit from bio-based formulations. Because this work presents a review of existing reports on inhibitor concentrations, temperature dependencies, and performance, practical commercial deployment appears to be at an early stage requiring formulation optimisation for specific operational environments.
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Abstract Background Mild steel is globally used in the construction, manufacturing and engineering industries due to its low cost and appreciable stability. Despite its application, mild steel often loses its structural integrity, attractiveness and performance because of corrosion, a spontaneous process with serious negative global safety, economic and environmental impacts. However, inhibitors are frequently used in corrosion-inhibitive fluids to provide temporary corrosion protection. Main body of the abstract Various organic and inorganic molecules display inhibitory characteristics; nevertheless, most of these are remarkably lethal to humans and their surroundings. Therefore, the application of such molecules is limited in recent applications. As of today, there has been a continuous and ever-increasing curiosity about the use of green corrosion inhibitors of plant origin. The current article discusses the kinds of corrosion, corrosion progression and plant-based mild steel corrosion inhibitors. Evidently, diverse plant sources have continuously been sufficiently used as sensible protectors for mild steel deterioration. Short conclusion Reports reveal an ever-increasing shift from the previous traditional synthetic to plant-based natural corrosion inhibitors in corrosive media. A wide range of natural plant-based corrosion inhibitors, the influence of the amount and temperature on inhibitory action and the motive for the shift are apparent.
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DOI: 10.1186/s42269-024-01181-7
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