Abstract
ABSTRACTIn 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.
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