A. de J. Morales Ramírez

Mechanical Properties of SiO2 Coatings for Corrosion Protection of 304 Stainless Steel

Corrosion damage on metallic substrates causes large economic losses as well as security problems. Fortunately, great efforts to combat these issues have been reported in all kinds of metals and their alloys, but until now the effect of corrosion has had no a real solution. The aim of the present is to produce monolayers of silicon oxide on 304 stainless steel sheets using the sol-gel and dip-coating processes, which have been widely employed due to low production costs, simplicity, and the ability to produce uniform thin films and coatings. Focusing the work on organic–inorganic hybrid coatings, tetraethilorthosilicate (TEOS) and 3-(Trimethoxysilyl)propyl methacrylate are used as precursors for the SiO2 layers formation. The mechanical properties of the SiO2 coating were evaluated by tensile and Vickers microindentation hardness tests, while corrosion resistance is characterized by potentiodynamic measurements.