Abstract
Control of the microstructure and pore characteristics of porous hydroxyapatite was examined. Porous hydroxyapatites were prepared with using different starting hydroxyapatite powders and sintering at various temperatures by pressureless-sintering method. The overall microstructure porosity characteristics, such as the fraction of open porosity and the pore size distribution, of porous hydroxy-apatites were evaluated. The pore volume and size distribution greatly depended on sintering temperature and the morphology of the starting hydroxyapatite powders. The fraction of open porosity of whisker hydroxyapatite powder sintered at 900 and 1000°C was 100 and 96%, respectively. The pore diameter and pore volume of porous hydroxyapatites prepared from whisker-like hydroxyapatite powder were larger than that from spherical and rod-like powders. Furthermore, the pore size distribution of the porous hydroxy-apatites body from whisker-like powder was very narrow. According to these results, various porous microstructure hydroxyapatite can be designed and the porosity characteristics reliably controlled.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
