Evaluation of the microstructural, mechanical and anti‐corrosive properties of a new ternary Ti–15Zr–5Nb alloy in simulated oral environment
作者： J. M. Calderon Moreno , C. Vasilescu , S. I. Drob , E. I. Neacsu , M. Popa
关键词:
摘要: A new ternary Ti–15Zr–5Nb alloy was elaborated with the aim to satisfy most stringent requirements of a good implant material. The has α + β bi-phase microstructure (by XRD and optical microscopy) presents proper combination between Young's modulus, elasticity ultimate tensile strength 0.2% yield (from stress–strain curve), indicating suitability as Electrochemical behaviour in artificial Carter-Brugirard saliva different pH values (3.96, 7.84, 9.11) composition (un-doped doped 0.05 M NaF) that simulate severe functional conditions oral cavity evaluated. All electrochemical parameters revealed more favourable than those CP Ti Ti–6Al–4V ELI alloy, showing compact, resistant passive film formed on surface. corrosion rates corresponding ion release for exhibited very low (hundreds times smaller) comparison similar commercial biomaterials. impedance spectra distinguished bi-layered by inner, barrier layer outer, porous layer. X-ray photoelectron scanning electron microscopy (SEM) observations proved time, protective compounds were deposited from surface, enhancing its resistance.
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