Abstract
Sol-gel glass coatings of SiO 2 were prepared on different metallic substrates (stainless steels AISI 304, 310 and 316) using the dip-coating technique. The characteristics of the solutions and the films produced were evaluated for each type of substrate and certain properties measured. Coatings were given standard tests relating to chemical and mechanical resistance: dry and acid corrosion and microhardness. Sol-gel SiO 2 coatings act as a protective barrier against oxidation and acid corrosion and enhances the scratch resistance of these substrates.
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