Natural Essential Oil Compounds as Green and Excellent Corrosion Inhibitors in Different Corrosive Media: A Mini Review

The present review aims to classify the natural essential oil compounds used as corrosion inhibitors for different metal samples into various corrosive media. These inhibitors are classified into several class based on the parts of plant which are used for production of these oil inhibitor compounds. These parts of plants are such as aerial parts, seeds or nuts, leaves, flowers, and fruits. The cases such as the names of the oil inhibitors, the analyzed samples, the tested media, the adsorption nature, and the highest inhibition efficiencies are given in the tables. In addition, at the end of the review, the inhibition mechanism of the oil inhibitor compounds is reported. The results show that the common mechanism of this type of the inhibitors is (chemical and/or physical) adsorption process of the oil molecules over the surface of the tested samples, separating the surface of the samples from the corrosive medium, and blocking the active reactions. Graphical Abstract: [Figure not available: see fulltext.] © 2022, The Author(s), under exclusive licence to Springer Nature Switzerland AG.