A comprehensive review on the nature and synthetic organic compounds as corrosion inhibitors

Abstract

Although corrosion is an inevitable part of daily life, it is always kept under control due to its technical, financial, and aesthetic significance. Erosion is a gradual phenomenon stimulated by anxiety about energy. Defense against corrosive environments on metals is inhibition. One of the most common and financially viable methods of preventing corrosion in metallic materials is the use of corrosion inhibitors (CIs). One of the five ways to prevent material corrosion, along with material selection, design, cathodic protection, and coating, is to use organic CIs. Particles with an unoccupied orbit on a metal substrate depend on adsorption values on the steel surface through the interactions of heteroatoms (N, O2, P, S), heterocyclic and aromatic rings, and conjugated double bonds. Through these interactions, molecules are attracted to the metal surface, where they bind and form an inhibitory barrier. This reduces the metal's corrosion rates as well as improves inhibition effectiveness. This review included a presentation of the CI compound's history before moving on to a discussion of how inhibition efficiency is affected by structure, substitution, heteroatoms, and molecular chain length. Weight loss (WL), electrochemical impedance spectroscopy (EIS), and dynamic active polarization techniques are used in a comparative investigation of the inhibitory performance of corrosion-inhibited compounds. Adsorption isothermal concepts and blocking processes. This paper discusses corrosion processes and scaling, various experimental corrosion techniques, the relationship between anticorrosion structure and effectiveness, and the process of novel inhibitors.