Corrosion behavior of newly developed Ti-Ag-Fe dental alloys in neutral saline solution

The corrosion behavior of Ti-5Ag-xFe alloys (x = 1, 2.5, 5wt%) in neutral saline solution was investigated by the open-circuit potential (OCP), potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and potentiostatic tests. The microstructural observation indicated that beta-Ti phase was retained by the addition of Fe into Ti-Ag alloys. Compared with commercially pure (CP) Ti, Ti-5Ag-xFe alloys exhibited higher corrosion potentials, lower current densities, and larger impedance, these suggested that Ti-5Ag-xFe alloys have nobler electrochemical corrosion behavior when compared with CP Ti in neutral saline solution.