An electrochemical approach to development of a method for accele strength evaluation of hard tissue replacement materials

Abstract

To develop a method of accelerating the strength evaluation of hard tissue replacement materials (Ti-6Al-4V alloy) with an electrochemical approach in the short term, corrosion tests were carried out on Ti-6Al-4V alloy by means of applying a uniform current to a simulated physiological environment and the potential difference was scanned to check the variations in the resistance of the specimens. As a result, the corrosion behavior was monitored by scanning the potential difference and an empirical formula for controlling the corrosion behavior of the Ti-6Al-4V alloy in the simulated physiological environment was proposed.

Fatigue properties on the failure mode of a dental implant in a simulated body environment

“…For the acceleration test conditions here, we used the research details that numerically express the relationship between the current density and the corrosion time with the application of the maximum size of the corrosion pit based on the experimental result [21].…”

“…An actual case of corrosion damage, as shown in Fig. 2, was discovered on the stem surface of a coxa implant (9 years and 2 months after the surgical operation) that was removed from a human body [21]. The passive film used in these applications can fracture especially when some type of stress other than that from the bio-environmental elements is repeatedly applied.…”