Studies on the Electrochemical Behaviour of Ti-Mo Alloys In Fluoride Medium to assess their Suitability for Dental Implant Applications (OLP-0073)

Abstract

The corrosion behaviour of Ti-Mo (5 to 25 wt.% Mo) alloys in 0.15M NaCl containing varying concentration of NaF (0.01, 0.03, 0.06 and 0.5 M) is addressed. The corrostion protective ability of Ti-Mo alloys when comparted to that of CP-Ti is evaluated using potentiodynamic polarization, EIS and chronoamperometric studies. The microstructure and structural characteristics of the Ti-Mo alloys are also evalated to correlate the corrosion resistance to their microstrucutral characteristics. In 0.15M NaCl containing 0.01 and 0.03 M NaF, Ti-10Mo exhibits lowest passive current density, however at higher concentration of NaF (0.06 and 0.5 M NaF) CP-Ti exhibits the lowest passive current density as compared to the Ti-Mo alloys. In 0.15M NaCl, Ti-25Mo alloys exhibits the lowest passive current density and hence is promising alloy for orthopedic material. From corrosion protection point of view Ti-10Mo seems to be a better choice among the Ti-Mo alloys in fluoride containing environment.