Adhesion aspects of hydrophobic silane zeolite coatings for corrosion protection of aluminium substrate

The composite coatings evidenced a high hydrophobic behaviour (contact angle between 125° and 140°) and good adhesive properties with the aluminium substrate. The best results were obtained at low concentrations of zeolite. A structural model of the composite coating able to interpret phenomenologically the performances of this new protective coating has been proposed.