Sol-Gel Coatings with Nanocontainers of Corrosion Inhibitors for Active Corrosion Protection of Metallic Materials


This chapter provides an overview of corrosion protection strategies using sol-gel coatings. The chapter starts by acknowledging current state of corrosion engineering and main directions in corrosion protection of metals specifically addressing how sol-gel systems differ from other coatings types. The examples of application of sol-gel coatings as barrier pretreatments have been presented. With that some preliminary conclusions have been made emphasizing the important need for active corrosion protection using inhibitors. Simple approaches presenting inorganic and organic corrosion inhibitors incorporation to hybrid sol-gel coatings are described. The corrosion performance and associated drawbacks of such approach are presented. The chapter also critically reviews different smart protection systems with controlled inhibitor release based on “smart” micro- and nanocontainers. The inhibitor loading strategies to nanocontainers, types of containers, performance, and associated protection mechanisms are critically discussed. The chapter concludes with final remarks regarding the utilization of sol-gel protective coatings combined with corrosion inhibitors.


K. A. Yasakau, M. G. S. Ferreira, M. L. Zheludkevich

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