The thermophysical properties and the molten CMAS resistance performance of Ytterbium Tantalate

The development of YSZ TBCs has been limited by the CMAS corrosion and thermophysical characteristics. The Ytterbium Tantalate (YbTaO4) ceramic was selected in this study to evaluate its potential to replace traditional YSZ. The thermal and mechanical properties of YbTaO4 show great advantages over YSZ, especially the hardness (191.3 ± 7.6 Hv0.3). The CMAS hot corrosion results indicate that the maximum thickness of the reaction layer at 1350 °C...