No abstract

The presence of polyethylene glycol (PEG) and syringaldehyde (SGA) mixture in a chloride bath produces nanocrystalline, bright zinc electrodeposition on steel substrate. The effect of the combination of additives PEG and SGA and simultaneous influence of deposition current density in the presence of the PEG+SGA mixture on the deposit surface morphology, texture, and grain size were systematically studied. The effects of these additives on cathodic current efficiency and throwing power of the bath and corrosion resistance of the deposit were analyzed. The presence of the PEG and SGA mixture remarkably changes both the morphology and orientation of growing zinc platelets. This study revealed the synergistic influence of additives on enhancing the corrosion resistance property of the deposit.