9 - Anti-corrosion and anti-wear ceramic coatings

Abstract

Ceramic coatings are the two-dimensional layered structures that are deposited on the surface of the substrate or object by various deposition procedures to improve the performance and sustainability of the engineering materials against various disciplines. Surface coating can allow the bulk materials to remain unchanged, while the surface functionality is engineered to afford a more wanted characteristic. Ceramic coatings are considered ideal coatings on the substrate which can significantly improve the surface properties of substrate materials, including antifouling, self-cleaning, corrosion resistance, wear resistance, antibacterial, and antifungal properties. Furthermore, various techniques like vapor deposition, chemical and electrochemical deposition, thermal spraying, sol-gel, atomic layer deposition, and solution immersion have been utilized to fabricate a range of different ceramic coatings with more desirable properties. Ceramic coatings like Al2O3, TiO2, HA, etc., provide excellent mechanical and physical properties, exhibiting their tremendous application in the architecture, marine, aerospace, and biomedicine fields. In addition, ceramic coating is environmentally friendly, and has the advantages of low cost, simple preparation, corrosion and wear resistance, thermal stability, mechanical durability, and biocompatibility. This chapter briefly introduces the types, properties, mechanisms, and applications of ceramic coatings used in anticorrosion and antiwear applications.