Role of Several Types of Inhibitors Used In Metal Corrosion for Mitigation and Their Impacts : A Brief Overview

Abstract

Corrosion is the natural degradation of metals and nonmetals as a consequence of their chemical, physical and electrochemical interactions with their surroundings. It has a negative effect on metallic substances and corrosive material causing failure of structure and their essential properties to deteriorate. Corrosion is a complex and difficult problem that can have negative consequences for economic development, the safety of humans, and their health. Corrosion may also lead to the shutdown of the plant, wastage of resources, and reduced process productivity. It also raises the costs of maintenance which can be either fixing or replacing the corroded metal. Microbial influenced corrosion (MIC) or biocorrosion is a well-known corrosion type that causes significant economic losses in a variety of industries and services. Because of their efficiency over a wide temperature range, superior solubility, and compatibility with protected materials, organic corrosion inhibitors are frequently employed in the industry. Because of the issue of toxicity, certain chemicals like chromates are increasingly being questioned as corrosion inhibitors. Green inhibitors, such as natural compounds derived from plant extracts are renewable, inexpensive, easily obtainable, recyclable, and environmentally benign. As a result of the emergence of green technology, extracts of plants and waste of fruit have proven to be potential corrosion inhibitors. This review summarizes some of the most fascinating characteristics of green inhibitors published over the last decade of work on the use of eco-friendly polymer-based materials and phytochemicals as an inhibitor for mitigating corrosion in various types of metals in acidic/biological mediums.