Microflower like Zinc Oxide/Cerium, Lanthanum Substituted Hydroxyapatite Bilayer Coating on Surgical Grade Stainless Steel for Corrosion Resistance, Antibacterial and Bioactive Properties

C. Sridevi1, P. Karthikeyan2, D. Dhivyapriya1, L. Mitu3, P. Maheswaran1 and S. Sathishkumar4,*

1Department of Chemistry, P.G.P. College of Arts and Science, Namakkal-637207, India

2Department of Chemistry, Periyar University Constituent College of Arts and Science, Idappadi, Salem-637102, India

3Department of Physics & Chemistry, University of Pitesti, Pitesti 110040, Romania

4Department of Chemistry, Sri Vijay Vidyalaya College of Arts and Science, Dharmapuri-636807, India

*Corresponding author: E-mail: sathish.sskg@gmail.com

Abstract

The growing evidence of beneficial role of zinc in bone has increased the interest of developing zinc-containing biomaterials for medical applications and specifically biocompatible coatings that can be deposited on metallic implants to benefit from their load-bearing capabilities. In present work, zinc oxide/cerium, lanthanum substituted (ZnO/Ce,La-HAP) hydroxyapatite bilayer coatings have been fabricated by electrodeposition technique. As developed, ZnO/Ce,La-HAP bilayer coatings were then structurally, morphologically and chemically characterized using Fourier-transform infrared spectroscopy(FT-IR), X-ray diffraction (XRD), higher resolution scanning electron microscopy (HRSEM) and energy dispersive X-ray spectroscopy (EDAX). The properties of corrosion performance of 316L SS were explored in Ringers solution using electrochemical analysis. The potentiodynamic polarization and impedance analysis demonstrated that the anticorrosion behavior of 316L SS was significantly increased by the bilayer coating. Cell viability in vitro, antibacterial activity and live/dead assay of ZnO/Ce,La-HAP bilayer coating were investigated. Hence, development of ZnO/Ce,La-HAP bilayer coating on 316L SS to make it suitable for biomedical applications.

Keywords

Lanthanum, Hydroxyapatite, Bilayer coating, Anti-corrosion, Antibacterial activity.

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