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Nanocrystalline Zinc Coating on Steel Substrate Using Condensation Product of Glycyl-Glycine [GGL] and Vanillin [VNL] and its Corrosion Study

H. B. Muralidhara, Y. Arthoba Naik, J. Balasubramanyam, K. Yogesh Kumar, H. Hanumanthappa and M. S. Veena

Nanostructured surface layer of zinc was electrodeposited on mild steel by simple electrochemical route. Bath composition, pH, current density and temperature were optimized through Hull cell experiments. Salt spray tests, cyclic voltammetric and linear polarization measurements were made in order to assess the corrosion behavior of the zinc deposit. The bath in presence of GGL and VNL produced highly corrosion resistant bright zinc deposit. The surface morphology and thickness of the zinc deposits were studied by scanning electron microscopic (SEM) studies. The preferred orientation and average particle size of the zinc electrodeposits were obtained by X-ray diffraction (XRD) analysis