Preparation And Electrochemical Study Of Cerium-Silica Sol-Gel Thin Films

Design and development of suitable multilayered systems for delaying corrosion advance in metals requires that both he alteration mechanisms of the metal and the behaviour and properties of the protective coatings be known. Coatings prepared by the sol-gel method provide a good approach as protective layers on metallic surfaces. This kind of coating can be prepared from pure chemical reagents at room temperature and atmospheric pressure, with compositions in a very wide range of environmentally non-aggressive precursors. Sol-gel coatings based on siloxane bonded units were prepared starting from an organic-inorganic hybrid system, details of which are explained in this paper.