IN VITRO CORROSION BEHAVIOR OF A BIODEGRADABLE ZnMg-Ti ALLOY IN DPBS

Ramona CIMPOEȘU, Romeu CHELARIU, Alexandra-Tamara ȘUTIC, Adrian ALEXANDRU, Ana-Maria ROMAN, Gheorghe BĂDĂRĂU, Raluca-Maria FLOREA, Cătălin-Andrei ȚUGUI, Mihai-Adrian BERNEVIG, Marius TELIȘCĂ, Nicanor CIMPOEȘU

Abstract


Biodegradable alloys are increasingly being used in the medical field for procedures that do not require permanent implants or extensive healing times. The slower degradation rate of zinc-based alloys compared to magnesium-based alloys enables the solution of a wider range of medical concerns. After obtaining a ZnMgTi alloy by classical casting in an induction furnace, its behavior in Dulbecco's Phosphate Buffered Saline (DPBS) was studied. Characterizing the interaction between the alloy and DPBS led to possible explanations for the alloy's corrosion behavior. These hypotheses were confirmed by analyzing the solution's pH evolution, as well as by conducting chemical analyses using X-ray energy spectroscopy (EDS) and scanning electron microscopy (SEM), and by assessing mass loss after immersion.

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