Synthesis and sinterability of hydroxyapatite-coated zirconia nanopowders

Hydroxyapatite (HAp), is a well-known and a valuable implant material with biocompatibility and bioactive properties. Full utilisation of the unique properties of hydroxyapatite bulk ceramics is, however, possible only after its proper reinforcement, i.e. by preparation of composites. In zirconia reinforced hydroxyapatite composites (HAp-ZrO2) it is possible to combine extremely advantageous properties of both biomaterials, previously applied separately. The goal of this study was to synthesized a HAp-coated zirconia composite powder by the precipitation of HAp in presence of zirconia. HAp was precipitated in order to obtain 3, 5, 10, 15, 30 and 50 wt % zirconia reinforced composite powders. The obtained powders were fully characterized in order to determine their properties and sinterability.