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Sequential analysis of electrochemical properties of β-tricalcium phosphate/chitosan coatings obtained on 316L stainless steel

Abstract:

Biocompatible coatings ofβ-Tricalcium phosphate-Chitosan were deposited on 316L stainless steel (316L SS) substrates via electrodeposition. The aim of this work is determinate the electrochemical behavior of AISI 316L substrates by usingβ-Tricalcium phosphate-Chitosan as a protective coating. The coatings were characterized by Fourier Transformed Infrared spectroscopy (FTIR spectroscopy) that showed bands associated toβ-Tricalcium phosphate (β-TCP) and Chitosan (Ch). By using electrochemical impedance spectroscopy with (EIS) and Tafel curves it was possible to determinate electrochemical behavior of 316L SS substrates coated withβ-TCP-Ch in Hanks solution (HBSS). Dispersive X-ray analysis (EDX) and Scanning electron microscopy (SEM) were performed to analyze chemical changes and morphological surfaces changes onβ-TCP-Ch coatings due to the reaction in HBSS/β-TCP-Ch surface coatings interface. Electrochemical behavior in HBSS indicates the coatings may be a promising material for biomedical industry application for temporal invasive prosthesis. © 2013 by ESG.