Phosphate of calcium ceramics

摘要

A strong and biocompatible sintered phosphate of calcium ceramics are obtained by sintering a powdery material substantially consisting of phosphate of calcium having a Ca/P ratio of 1.4-1.75, e.g. apatite group and/or tricalcium phosphate, and not exceeding 15% by weight of CaO-P2O5 frit having a Ca/P ratio of 0.2-0.75. Y2O3 incorporation therein improves the bending strength of the ceramics. Furthermore, a P2O5-metal oxide frit wherein metal oxide being one or more selected from BaO, CaO, MgO, ZnO, NaO and K2O provides a more improved bending strength. The Y2O3 incorporation herein still improves the strength of the sintered product.