Effect of Mg and Si co-substitution on microstructure and strength of tricalcium phosphate ceramics

Mg and Si additions were found to be effective to improve densification and associated strength of TCP bioceramics due to the enhancement of sintering by the low viscosity liquids formed. The highest density and strength were obtained for the TCP ceramic containing 5 wt% CaMg(SiO3)2 sintered at 1300 °C. Cracking and porosity increased at higher temperatures due to grain growth and swelling.