Corrosion Protection Coatings in Industrial Materials: Methods and Innovations
Hüseyin Fatih Çetinkaya, Esra Seyran, Serap Çetinkaya, Burak Tüzün
Abstract
Corrosion is a natural process where materials, in particular metals, deteriorate due to chemical or electrochemical reactions with in their environment. Corrosion protection coatings are fundamental to enhance the durability and lifespan of industrial materials. These coatings create a barrier between the material and the environment, hence preventing or slowing down the corrosive processes. In this chapter corrosion protection coatings are examined under three categories: as organic, inorganic, and metallic, each of them offering unique properties and mechanisms for corrosion protection. Organic coatings, are the most common type of corrosion protection agents, creating continuous surface films against corrosive substances. Recent advancements integrate nanotechnology and self-healing features to organic coatings. The examples of self-healing materials and nanomaterials are elaborated throughout the chapter. Metallic coatings provide protection through sacrificial and barrier mechanisms. Sacrificial metallic coatings, utilize metals that corrode preferentially in order to protect the underlying metal. Barrier metallic coatings, are composed of stainless steel or nickel alloys, and create a physical barrier to prevent corrosive substances from reaching the substrate. Advancements in alloy design have led to the development of corrosion-resistant metallic coatings that are tailored for specific environments. There is an increasing trend to develop eco-friendly metallic coatings that avoid harmful elements and use renewable materials. Although rust can act as a protective layer, it can also accelerate corrosion under certain conditions. Weather-resistant steels are designed to use a natural rust layer for protection. Ongoing research aims to improve the protective properties of rust and optimize the overall performance of steel. Advanced techniques such as electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), and atomic force microscopy (AFM) are crucial for evaluating and optimizing the performance of corrosion protection agents. These techniques provide detailed analysis of coating agents, their corrosion behavior, and degradation mechanisms, providing real-time evaluation and maintenance. The continuous research and development for the improvement of corrosion protection coatings are imperative in addressing the economic and environmental consequences of corrosion. The advancements in organic, inorganic, and metallic coatings, along with innovative surface engineering techniques and advanced characterization methods, enhance the efficiency of coating agents. These innovative approaches are fundamental to overcome persistent corrosion challenges across various applications and industries.