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http://dx.doi.org/10.4150/KPMI.2010.17.6.443

Fabrication of Ultra Fine β-phase Ti-Nb-Sn-HA Composite by Pulse Current Activated Sintering  

Woo, Kee-Do (Division of Advanced Material Engineering and Research Center of Advanced Materials Technology(RCAMD), Chonbuk National University)
Wang, Xiaopeng (School of Material Science and Engineering, Harbin Institute of Technology)
Kang, Duck-Soo (Division of Advanced Material Engineering and Research Center of Advanced Materials Technology(RCAMD), Chonbuk National University)
Kim, Sang-Hyuk (Division of Advanced Material Engineering and Research Center of Advanced Materials Technology(RCAMD), Chonbuk National University)
Woo, Jeong-Nam (Biologics Research Divison, National Institute of Food and Drug Safety Evaluations)
Park, Sang-Hoon (Division of Advanced Material Engineering and Research Center of Advanced Materials Technology(RCAMD), Chonbuk National University)
Liuc, Zhiguang (Department of Materials and Process Engineering, The University of Waikato)
Publication Information
Journal of Powder Materials / v.17, no.6, 2010 , pp. 443-448 More about this Journal
Abstract
The $\beta$ phase Ti-Nb-Sn-HA bio materials were successfully fabricated by high energy mechanical milling and pulse current activated sintering (PCAS). Ti-6Al-4V ELI alloy has been widely used as biomaterial. But the Al has been inducing Alzheimer disease and V is classified as toxic element. In this study, ultra fine sized Ti-Nb-Sn-HA powder was produced by high energy mechanical milling machine. The $\beta$ phase Ti-Nb-Sn-HA powders were obtained after 12hr milling from $\alpha$ phase. And ultra fine grain sized Ti-Nb-Sn-HA composites could be fabricated using PCAS without grain growth. After sintering, the microstructures and phase-transformation of Ti-Nb-Sn-HA biomaterials were analyzed by scanning electron microscope (SEM) and X-ray diffraction (XRD). The relative density was obtained by Archimedes principle and the hardness was measured by Vickers hardness tester. The $\beta$-Ti phase was obtained after 12h milling. As result of hardness and relative density, 12h milled Ti-Nb-Sn-HA composite has the highest values.
Keywords
Ti-Nb-Sn-HA composite; High energy mechanical milling (HEMM); Pulse current activated sintering (PCAS);
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