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Epoxy-based nanocomposite coatings were formulated by incorporating various types of inorganic nanoparticles (NPs) (ZrO₂, ZnO, Fe₂O₃, and SiO₂). The effect of the incorporation of various NPs on the mechanical, thermal, and morphological properties of these epoxy coatings has been studied. A facile direct incorporation technique has been utilized for the dispersion of the NPs in the epoxy matrix via high-speed mechanical stirring and ultra-sonication using acetone as a solvent. The incorporation of these NPs augmented the mechanical and thermal properties of the epoxy coatings. The results revealed that the incorporation of small amount of these NPs improved the mechanical properties of the coating in all cases, with the SiO₂-reinforced sample being relatively better in both mechanical and thermal properties. The incorporation of Fe₂O₃ and ZnO resulted in a decrease in the thermal stability and …