An investigation on Mechanical Properties of Apatite-Wollastonite-Diopside Glass-Ceramics Composites

In the present study, Apatite-Wollastonite-Diopside glassceramic composites were prepared by the pressureless sintering process at the temperature range of 1100-1160 °C. The weight percentage of phlogopite was varied between 10% and 50%. In addition, the bending strengths were increased from 100 to 170 Mpa by increasing the content of phlogopite up to 20 wt%. Furthermore, the sintering conditions were studied via characterizing the linear shrinkages and the relative densities of sintered samples. The relative density of composites increased through increasing the content of phlogopite up to 83% at 1050 °C in C55 sample (with 50:50 weight percent). The XRD results showed that the forsterite as well as the phlogopite phase caused the maximum hardness of 16 GPa in C28 sample .