Estudos eletroquímicos de ligas Ti-Mo de interesse para biomateriais

ti alloys are being developed to be used in orthopedic implants due their mechanical properties, biocompatibility and corrosion resistance. at this paper are reported electrochemical studies on the as-cast ti-mo alloys with 6, 10 and 20 mo (wt.%), in 0.15 mol/l na2so4 solution and ringer physiological solution. analyses of the rest-potential indicated that all alloys present the same tendency to a spontaneous passivation, while cyclic voltammograms showed not transpassivation up to potentials of 8,0 v (vs ecs), indicating high corrosion resistance. the comparison among open-circuit profiles of the anodic oxides growth in ringer and na2so4 solutions, are showing that the presence of chloride ions during the anodization is not influencing the oxides chemical stability.