Exploration of the effect of Zn-MgO-UPP coating on hardness, corrosion resistance and microstructure properties of mild steel

This paper investigated the effect of unripe plantain peel (UPP) nanoparticles reinforced Zn-MgO composite coating on hardness, anti-corrosion and microstructure properties mild steel. The characteristics coatings were examined using potentiodynamic polarization method, employing 3.65 % NaCl solution as test medium. hardness was studied Brinell technique, while XRD SEM/EDS. results study revealed that as-received steel sample exhibited corrosion rate value 8.6272 mm year-1 136.8 kgf mm-2, respectively, coated a 242.5 mm-2 3.6362 year-1, respectively. optimal performing Zn-MgO-UPP (sample with 20 g L-1 MgO 6 UPP) 0.8317 245.8 Zn-20MgO-6UPP indicated UPP further improved passivating strengthening ability coating. Moreover, profile possessed high intensities, which indi­cat­ed exhibit microstructural chemical homogeneity, stability good texture. It observed SEM micrographs exhi­bited more refined compared to coating, indicating grain refining tendency nanoparticles. EDS presence essential dispersion elements in coatings.