Emerging Corrosion Inhibitors for Interfacial Coating

Abstract

Abstract:Corrosion is a deterioration of a metal due to reaction with environment. The use of corrosion inhibitors is one of the most effective ways of protecting metal surfaces against corrosion. Their effectiveness is related to the chemical composition, their molecular structures and affinities for adsorption on the metal surface. This review focuses on the potential of ionic liquid, polyionic liquid (PIL) and graphene as promising corrosion inhibitors in emerging coatings due to their remarkable properties and various embedment or fabrication strategies. The review begins with a precise description of the synthesis, characterization and structure-property-performance relationship of such inhibitors for anti-corrosion coatings. It establishes a platform for the formation of new generation of PIL based coatings and shows that PIL corrosion inhibitors with various heteroatoms in different form can be employed for corrosion protection with higher barrier properties and protection of metal surface. However, such study is still in its infancy and there is significant scope to further develop new structures of PIL based corrosion inhibitors and coatings and study their behaviour in protection of metals. Besides, it is identified that the combination of ionic liquid, PIL and graphene could possibly contribute to the development of the ultimate corrosion inhibitor based coating.

Development of biobased polyurethane‐imides from maleinized cottonseed oil and castor oil

“…The free electrons on the heteroatoms involve in the formation of coordinate covalent bonds with the metallic electrons, which binds the coating tightly to the metal surface. Hence, the coating acts as a strong barrier to restrict the diffusion of corrosive species . The order of corrosion inhibition was found as PUI‐1.0 > PUI‐0.75 > PUI‐0.50, mainly due to the combined effect of imide groups and cross‐linking density.…”

Polymers Decorated with Functional Motifs for Mitigation of Steel Corrosion: An Overview

“…The two main challenges associated with the inhibitors being adsorbed on the metal surface are as follows: (1) metal-inhibitor interactions and (2) transport of the CI from bulk solution to the surface of the metal. The immobilization of CIs into micro-/nanocontainers could help overcome these issues [119].…”

Green Corrosion Inhibitors

“…A corrosion inhibitor is known as a chemical constituent that can diminish or prevent and control corrosion when added in small amount to the metal environment. Corrosion inhibitors are considered as the first line of defense against oil and chemical industry corrosion [27]. Corrosion inhibitors are sought after giving metals temporary protection during transportation and storage as well as localized protection to prevent corrosion that may have resulted from accumulation of small amounts of an aggressive phase.…”