Effect of V2O5 Additives to the Sintering of Y_2O_3

摘要

The effect of sintering additive on the microstructure development of yttrium oxide was investigated at different sintering temperature (700, 900, 1100, 1300 °C) under static air. Different combinations of yttrium oxide with V2O5 were used as a ceramic composite material. X-ray diffraction, differential thermal analysis (DTA) were investigated and microstructure of resulting compacts were characterized by, using scanning electron microscopy, porosity and sintering density reflected the optimum values for the combination Y_2O_3-3 wt% V2O5 sintered at temperature 1300 °C. Mechanical properties representative by hardness and compression were tested. Brake down voltage and dielectric strength were measured for all compacted samples sintered at 1300 °C.