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Bioactivity of Ti-27Nb-10Ta-3.5Zr Alloy Modified by Anodic Oxidation and Precalcification Treatments
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Àü¿ì¿ë ( Jeon Woo-Yong ) - ±¤¾çº¸°Ç´ëÇÐ Ä¡±â°ø°ú
KMID : 0362220130400030179
Abstract
This study was performed to investigate the bioactivity of Ti-24Nb-17Ta-5Zr alloy modified by an anodic oxidation and an precalcification treatments. Ti-27Nb-10Ta-3.5Zr alloy was anodized to form the nanotubular TiO2 layer. To increase the bioactivity, calcium phosphate deposition was carried out by an immersion treatment in 0.5 M CaHPO4 solution at 90¡É for 30 min . Bioactivities were evaluated by the apatite forming ability in simulated body fluid (SBF) for 10 days. Nanotubular TiO2 layer showed the dense and self-organized structure. Nanotubes showed the separately connected tube structures and it was opened and enlarged as going down. The bioactivity of nanotubular TiO2 layer on Ti-27Nb-10Ta-3.5Zr alloy was improved with precalcification treatment in 0.5 M CaHPO4 at 90¡É. These results suggest that the bioactivity of Ti-27Nb-10Ta-3.5Zr alloy could be improved with the formation of nanotubular TiO2 layer and the precalcification treatment in 90¡É 0.5 M CaHPO4 solution.
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Ti-27Nb-10Ta-3.5Zr alloy; nanotubular TiO2 layer; precalcification treatment
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