Corrosion resistance of β-phase titanium alloys under simulated inflammatory conditions: Exploring the relevance of biocompatible alloying elements
Agata Sotniczuk, Jeremy L. Gilbert, Yinong Liu, Magdalena Matczuk, Witold Chromiński, Damian Kalita, Marcin Pisarek, Halina Garbacz
Abstract
In this study we compared the corrosion behavior of single β-phase alloys: (i) Ti-29Nb-13Ta-4.6Zr and (ii) Ti-45Nb, that contain similar amount of β-phase stabilizers. Corrosion resistance was analyzed in the PBS+H2O2 solution, which simulates the conditions as can be found during post-operative inflammation. Results of electrochemical impedance spectroscopy, and ion-release measurements revealed that Ti-29Nb-13Ta-4.6Zr alloy demonstrated significantly higher corrosion resistance compared to Ti-45Nb. Post-immersion microscopic analysis demonstrated that a thinner layer of oxidation products was formed on Ti-29Nb-13Ta-4.6Zr alloy surface. Overall results allowed to exclude the beneficial role of Nb in tailoring corrosion resistance of Ti-29Nb-13Ta-4.6Zr under simulated inflammatory conditions. Data will be made available on request.