On the Sintering Behavior of NbO and TaO Mixed Oxide Powders.

A mixed oxide system consisting of NbO and TaO was subjected to annealing in air/hydrogen up to 950 °C for 1-4 h to study its sintering behavior. The thermogravimetric-differential scanning calorimetry (TGA-DSC) thermograms indicated the formation of multiple endothermic peaks at temperatures higher than 925 °C. Subsequently, a 30% TaO and 70% NbO (mol%) pellet resulted in good sintering behavior at both 900 and 950 °C.