Self-healing hybrid nanocomposite coatings with encapsulated organic corrosion inhibitors

To improve corrosion protection properties of sol–gel derived hybrid coatings, encapsulated inhibitor corrosion (2-mercaptobenzothiazole (MBT) and 2-mercaptobenzimidazole (MBI)) in the presence of α-cyclodextrin have been incorporated into hybrid coatings. Encapsulation of corrosion inhibitor is a result of inclusion complex formation between α-cyclodextrin and inhibitor corrosion and becomes active in corrosive electrolyte, so can slowly diffuse out of the host material to ensure continuing delivery of the inhibitor to corrosion sites and long-term corrosion protection. Structural characterization of the hybrid coatings were performed using electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) coupled with energy dispersive x-ray spectroscopy (EDX and Fourier transform infrared spectroscopy (FTIR).

کلیدواژه ها:

Coatings ، Encapsulated inhibitor corrosion ، Cyclodextrin ، Inclusion Complex ، Controlled released