Combating Hot Corrosion of Metallic Substrate by Nano-Coating

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Corrosion of metallic materials poses a serious threat to the efficiency of the manufacturing and construction industries. To overcome this, various surface modification techniques are employed. But, surface protection by nano-coating is gaining great potential owing to its numerous benefits. These include surface hardness, high-resistance against hot corrosion, high wear resistance, and adhesive strength. Additionally, nano-coatings can be deposited in thinner and smoother thicknesses, allowing for increased efficiency, more flexible equipment design, smaller carbon footprints, and lower operating and maintenance costs. Hence, the aim of this chapter is to provide an overview of the corrosion performance of ceramic, metallic, and nanocomposite coatings on the surface of the metallic substrate. In addition, the role of nanocoating to combat corrosion of metallic substrate is explored. Finally, the diverse applications of nano-coating in different fields including aircraft, automobile, marine, defense, electronic, and medical industries are discussed.