A Study on Corrosion Behaviour of SS316L and Ti-6Al-4V Dental Implant Materials

Abstract

This paper represents the study carried out on the corrosion behaviour of SS316L and Ti-6Al-4V, which
are used as implants in dental applications. This study was carried out to determine the corrosion performance
and corrosion resistance of implant materials in physiological conditions of the human body. The results were
evaluated through precision measurement of parameters namely electrochemical impedance spectroscopy (EIS) and
open circuit potential (OCP). The corrosion tests were carried out in a three electrode cell system for a duration of 3
hours at 37◦C in hanks balanced salt solution, which was used as the corrosion testing medium. The results showed
that the corrosion potential (Ecorr) was increasing and reached a maximum value of 0.147 and 0.108 for SS316L and
Ti-6Al-4V, respectively. Hence the study revealed that SS316L exhibits better corrosion properties than Ti-6Al-4V to
overcome problems encountered with vanadium.