Hybrid Organosilicon-Metal oxide Composites and their Corrosion Protection Performance for Mild Steel in 3.5% NaCl Solution

The effect of embedding various metal oxide additives on the structural, curing, morphological, adhesion, and corrosion protection properties of a novel hybrid sol-gel polymeric coating has been examined using various characterization techniques. The coating formulation embedded with yttrium(III) oxide exhibited optimum low surface roughness, good adhesion to metallic substrates with elevated thermal stability, and enhanced barrier properties for mild steel substrates in 3.5 wt.% NaCl medium compared to the parent coating. Scanning electrochemical microscopy analyses indicated a dense, crack-free, and homogeneous nature for the coating layer on the steel. The coating's degradation was evaluated using the scanning electrochemical microscopic technique.