ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Electrolytic deposition of composite coatings on 316L SS and its in vitro corrosion resistive behavior in simulated body fluid solution

S. Arul Xavier Stango and U. Vijayalakshmi

Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, India

E-mail: vijayalakshmi.u@vit.ac.in

Received: 14 December 2020  Accepted: 12 April 2021

Abstract:

Graphene oxide incorporated hydroxyapatite hybrid films were coated on 316L stainless steel substrate with the aid of electrochemical studies at the voltage of −1.5 V for 30 min using three electrode arrangements. Purity and crystallinity of the formed HAP/GO composite coatings were examined using X-ray diffraction and Fourier transform infrared spectroscopic studies. Phase of the hydroxyapatite was not affected with incorporation of graphene oxide into its matrix. Well-ordered and compact coating morphology was observed for the electrochemically deposited HAP/GO on 316L substrate using the scanning electron microscopy. High-resolution transmission electron microscopic studies reveal the tight bonding and growth of HAP particles on to the sidewalls of GO sheets. Electrochemical studies for the HAP/GO composite coating against the physiological solution showed improved corrosion efficiency. Addition of GO into HAP enhances the apatite precipitation and bone-bonding ability. These results concluded that the electrochemical deposition of bioceramic coatings on implant may be treated as an effective method for orthopedic repair and replacements.

Keywords: 316L SS; Electrochemical; Hydroxyapatite; Graphene oxide; Corrosion Resistance; Hardness

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-021-01657-0

Chemical Papers 75 (9) 4779–4791 (2021)