Porosity Evaluation of Sintered Powder Compacts and Its Effect on Some Properties of Bioactive (Na2O – CaO – SiO2 – P2O5 ) Glass - Ceramic System

The aim of this research is the preparation and characterization of glass-ceramic that is able to mimic the structure of the natural bone, formed by cortical and cancellous bone and to study the effect of formed porosity on the prepared system. the method and materials described herein provide biocompatible materials, e.g. na2o - cao - sio2- p2o5 glasses prepared by melt – quench rout, ground, and sieved to obtain powder of specific size. the samples were characterized through morphological observation i.e. (sem and opm) to identify the porose formation also x- ray diffraction used to identify the major phases, i.e. sodium calcium silicate, calcium silicate and calcium phosphate. as well as porosity porosemetry test was used to reveal the volume & % of porosity and density measurements, some of mechanical tests also were done represented by hardness and fracture toughness.