Articles
  • Properties of hydroxyapatite synthesize by wet chemical method
  • S. Ramesha,*, S. Adzilaa,b, C.K.L. Jeffreya, C.Y. Tana, J. Purbolaksonoa, A.M. Noora, M.A. Hassana, I. Sopyanc and W.D. Tengd
  • a Centre of Advanced Manufacturing & Material Processing (AMMP), Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia b Department of Materials Engineering and Design, University of Tun Hussein Onn Malaysia, Johor, Malaysia c Department of Manufacturing and Materials Engineering, Faculty of Engineering, International Islamic University Malaysia, Malaysia d Ceramics Technology Group, SIRIM Berhad, 40911 Shah Alam, Selangor, Malaysia
Abstract
The sintering behavior of a commercial HA and synthesized HA was investigated over the temperature range of 700 oC to 1400 oC in terms of phase stability, bulk density, Young's modulus and Vickers hardness. In the present research, a wet chemical precipitation reaction was successfully employed to synthesize a submicron, highly crystalline, high purity and single phase stoichiometric HA powder that is highly sinteractive particularly at low temperature regimes below 1100 oC. It has been revealed that the sinterability of the synthesized HA was significantly greater than that of the commercial HA. The temperature for the onset of sintering and the temperature required to achieve densities above 98% of theoretical value were approximately 150 oC lower for the synthesized HA than the equivalent commercial HA. Nevertheless, decomposition of HA phase upon sintering was not observed in the present work for both powders.

Keywords: Hydroxyapatite, Wet chemical method, Sintering, Mechanical properties.

This Article

  • 2013; 14(4): 488-452

    Published on Aug 31, 2013