Sol-gel process is a suitable method for the production of glass-like coatings onto metals, acting as barrier against oxidation and providing an increased resistance to corrosion. Hybrid and inorganic coatings of different compositions have been used for coating several metals by using techniques like dipping, spin-coating and spraying. Although these methods lead to good properties on the final coatings are restricted by the thin thickness, thus limiting the application range. Electrophoretic deposition is considered a highly versatile technique for producing homogenous thicker coatings. The aim of this work deals with the preparation of coatings onto metals by EPD from hybrid silica sols and from colloidal silica suspensions where the hybrid sols constitute the suspending medium.
