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- Fabrication of Ultra Fine β-phase Ti-Nb-Sn-HA Composite by Pulse Current Activated Sintering
- Kee-Do Woo, Xiaopeng Wang, Duck-Soo Kang, Sang-Hyuk Kim, Jeong-Nam Woo, Sang-Hoon Park, Zhiguang Liuc
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Journal of Korean Powder Metallurgy Institute 2010;17(6):443-448
DOI: https://doi.org/10.4150/KPMI.2010.17.6.443
2School of Material Science and Engineering, Harbin Institute of Technology
3Division of Advanced Material Engineering and Research Center of Advanced Materials Technology(RCAMD), Chonbuk National University
4Division of Advanced Material Engineering and Research Center of Advanced Materials Technology(RCAMD), Chonbuk National University
5Biologics Research Divison, National Institute of Food and Drug Safety Evaluations
6Divi
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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.
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