Effect of sodium-ion implantation on the corrosion resistance and bioactivity of titanium (original) (raw)

The corrosion resistance and bioactivity of titanium after sodium-ion implantation were examined. Polished samples were implanted with a dose of 10 17 Na + /cm 2 at a beam energy of 25 keV. The chemical composition of the surface layer formed during the implantation was determined by X-ray photoelectron spectroscopy (XPS) and secondary ion mass spectrometry (SIMS). The bioactivity of the samples was evaluated by soaking them in a simulated body fluid (SBF) at 37 1C for 168 and 720 h. The corrosion resistance in SBF at 37 1C was determined by electrochemical methods after exposure in SBF for various times. The results obtained indicate that sodium-ion implantation improve the corrosion resistance after short-term exposures. During an exposure in SBF, calcium phosphates precipitate on the sample surface but they do not form a continuous layer. r