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Nanosized Hydroxyapatite Precipitation on the Ti—30Ta—xHf Alloys
Lee, Kang,Jang, Jae-In,Han-CheolChoe, American Scientific Publishers 2017 Journal of Nanoscience and Nanotechnology Vol.17 No.4
<P>In this study, we prepared hydroxyapatite (HAp) layer on the alkali treated Ti-30Ta-xHf alloys using electrochemical deposition method. Ti-30Ta-xHf alloys was anodized in 5 M NaOH solution at 0.3 A for 10 min. Alkali treated Ti-30Ta-xHf surface formed by anodization step which acted as templates and anchorage for growth of the HAp during subsequent pulsed electrochemical deposition process at 85 degrees C. The phase and morphologies of deposited HAp layer were affected by the Hf contents of Ti-30Ta-xHf alloys. The nano-scale rod-like HAp layer was formed on untreated Ti-30Ta-xHf alloys with partially low crystallinity. In the case of alkali treated Ti-30Ta-xHf, nano-sized needle-like layers were transferred to nano-flake surface and denser morphology as Hf content increased.</P>