Corrosion Resistive Hybrid Sol-Gel Coatings Loaded with Corrosion Inhibitors

This chapter describes the recent innovations in the approach of loading hybrid sol–gel coatings with various organic and inorganic corrosion inhibitors and the impact of the added inhibitor on the structural, thermal, morphological, adherence, and barrier properties of the parent sol–gel coatings on metal substrates exposed to different corrosive environments. The topic of the chapter will shed light also on the synergistic effects of mixing the embedded corrosion inhibitor with other coating’s additives, such as biocides, bacterial strains, metal oxides, and so forth on the desired properties of the functionalized coatings. Common techniques for characterizing the inhibitor–functionalized hybrid sol–gel coatings are summarized. Finally, a brief highlight of recent controlled-release inhibitors encapsulated within hybrid coating systems is presented in this chapter.