Effect of Rare Earth Elements on Stability and Sintering Resistance of Tetragonal Zirconia for Advanced Thermal Barrier Coatings

The effect of dopant species on the sintering resistance zirconia-based ceramics remains a huge challenge in terms both experiment and theory. As one most popular materials for high-temperature protective coatings, it is still urgent to obtain rare earth-doped ZrO2 with high good phase stability. Here, stability earth oxides (La2O3, Nd2O3, Gd2O3, Y2O3)-stabilized zirconia (ZrO2) were thoroughly studied by theoretical experimental methods. According data, doped ions larger radii (La3+, Nd3+, Gd3+) exhibited improved at reduced tetragonal Molecular dynamics simulation results revealed that ionic are prone segregation grain boundaries, which can more effectively reduce boundary energy under consideration. Therefore, proposed approach involving doping NdO1.5 (~1 mol%) YO1.5 (YbO1.5, 6 considered be promising route effective preparation sinter-resistant ZrO2-based refractory thermal barrier materials.