Plant extracts acting as corrosion inhibitor of steel reinforcement

Corrosion of steel reinforcement in the construction field poses safety, financial and environmental threat. It can be handled effectively using inhibitors. Despite having an advantage, the synthetically produced inorganic and inhibitors impart huge cost and toxicity. As a result of extensive research toward green technology quite significant numbers of green corrosion inhibitors from plants shows promising results at low cost and eco-friendly option. The constituents in plants acts in a similar way like its chemical counterpart and provide best inhibition efficiency. This paper provides an overview of the types of corrosion, corrosion process, and mainly recent work done on the application of natural plant extracts as corrosion inhibitors for steel.