ABSTRACT
Corrosion is a central problem for industry and environment in terms of severity and cost. Therefore, the design of advanced composites as efficient anticorrosive materials to prevent or inhibit corrosion of metals has emerged as a demanding need. The revolution of materials science facilitates the development of a new generation of effective materials for anticorrosion applications. Among others, carbon nanoallotropes are considered as one of the most promising materials in the field of corrosion protection due to their exceptional characteristics such as large surface area, excellent mechanical properties, lightweight, easy synthesis and synergistic behaviour with other materials. Carbon allotropes-based materials can be used both as coatings that are directly applied over the metal surfaces or as inhibitors which are added to the corrosive medium and then are adsorbed on the metal surface. This chapter highlights the recent advances in the use of the different categories of carbon nanoallotropes such as graphene, carbon nanotubes and carbon dots for corrosion protection of metals. It also discusses their different modes of action as anticorrosive coatings or inhibitors in different corrosive environments. The chapter also reviews the important electrochemical data that reflect the performance of the different materials. Moreover, morphological investigations of some of the metal surfaces and their modification with various nano-carbon based coatings are presented. Lastly, this chapter addresses some of the challenges that limit the application of these materials on a large scale and with high efficiencies for corrosion protection of different metals.
