Surface and in vitro corrosion properties of spark plasma sintered Ti-Zr-Nb-Ta-Ag high entropy alloy for dental implant applications.

ABSTRACT: In this study, the surface and in vitro corrosion behaviors of Ti-Zr-Nb-Ta-Ag high-entropy alloys (HEA) processed through mechanical alloying and spark plasma sintering (SPS) were investigated to assess their potential for dental bioimplant applications. The results showed that the SPS HEA yielded a dual-phase body-centered cubic structure and an ultrafine Zr-based phase. The HEA exhibits nearly double the hardness (8.2 GPa) and significantly higher resistance to plastic deformation (H³/E² =0.0312 GPa) compared to Ti6Al4V, which showed a hardness of 4.11 GPa, and H³/E² value of 0.00349 GPa. X-ray photoelectron spectroscopy revealed the formation of biocompatible surface oxides including TiO₂, ZrO₂, Nb₂O₅, Ta₂O₅ and Ag. The p

SUBMITTER: Hussein MA 

PROVIDER: S-EPMC12475246 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature