Abstract
The porous hydroxyapatite ceramics with various porosity values were prepared using molten wax colloidal process. Graphite powders were used as combustible pore-forming agents. The total porosity of porous hydroxyapatite increased with the graphite content added. The total porosity, mean pore sizes were controlled by changing the content of graphite, the mean graphite particle diameter and sintering temperature. Most of the pores in the resulting ceramics were regarded as the open pores. The flexural strength of porous ceramics markedly decreased with the total porosity.
