Production and anodising of highly porous Ti–Ta–Zr–Co alloy for biomedical implant applications

Abstract

In the present study, beta-type low elastic modulus Ti-Ta-Zr-Co alloy foams were manufactured by powder metallurgy-mechanical alloying based space holder route for hard tissue implant purposes. Ta was included to the alloy for low elastic modulus beta-Ti phase stabilisation in order to prevent stress shielding effect between implant and bone. Zr was introduced for corrosion resistance. Co addition was lowered the sintering temperature of the alloy, provided easier machining, and introduced aging capacity. Electrochemical anodisation (oxidation) surface treatment was carried out to produce a surface oxide film in order to improve the corrosion resistance and bioactivity. Corrosion properties of the surface passive oxide film were investigated in artificial saliva. Digital radiography and computed tomography studies were used for three-dimensional defect and pore structure characterisation.

Corrosion resistance of Ni–Cr alloy in artificial tears in the presence of excess of glucose and sodium chloride

“…Influence of contact configuration and lubricating conditions on the microtriboactivity of the zirconia-Ti6Al4V pair used in dental applications has been studied by Branco et al [8]. Soran and Mutlu have studied on production and anodizing of highly porous Ti-Ta-Zr-Co alloy for biomedical implant applications [9]. Effect of the heat treatment on corrosion and mechanical properties of CoCrMo alloys manufactured by selective laser melting has been investigated by Zhang et al [10].…”