Researchers from the IDONIAL Foundation have developed a hybrid sol-gel coating as a promising alternative to chromium (VI)-based coatings, known for their high corrosion resistance but restricted in many countries due to their toxicity. Sol-gel technology, based on organic-inorganic silicon chemicals, offers corrosion protection and excellent paint adhesion.

The study utilized a mixture of 3-(Glycidoxypropyl) methyldiethoxysilane (GPTMS) and tetraethyl orthosilicate (TEOS), enhancing coating thickness with polyvinylpyrrolidone (PVP) and polyethylene glycol (PEG-6000). Additionally, inhibiting nanoparticles such as ZnO and ZrO, along with lanthanum and zirconium salts, were incorporated, improving the anticorrosion properties of the coating applied on galvanized steel. This advancement could extend the lifespan of metallic materials in various industrial applications.

This work will be presented at the SMS Smart Materials and Surfaces 2024 Conference.