Phase relations in the ZrO2-La2O3-Y2O3-Al2O3 system

得到了ZrO2-La2O3-Y2O3-Al2O3的自洽热力学数据库。包括二元和三元体系的参数将使用可用的实验相平衡数据和使用calphhad方法测量的热力学值进行评估。实验研究了ZrO2-La2O3-Y2O3和La2O3-Y2O3-Al2O3体系的相平衡。基于从二元系统到三元系统的外推的初步计算将用于选择要研究的成分。所获得的热力学描述将用于计算平衡相图，这对于理解热障涂层（TBC）系统中各层之间的相互作用以及固体氧化物燃料电池中正极材料和固体电解质之间的相互作用至关重要。无扩散变换的计算将用于理解掺杂对TBC稳定性和耐久性的影响。

The self-consistent thermodynamic database for the ZrO2-La2O3-Y2O3-Al2O3 will be arrived. The parameters of including binary and ternary systems will be assessed using available experimental phase equilibrium data and thermodynamic values measurement using Calphad approach. The phase equilibria will be experimentally studied in the ZrO2-La2O3-Y2O3 and La2O3-Y2O3-Al2O3 systems. The preliminary calculations based on extrapolations from binary systems into ternaries will be used for selection of compositions to be investigated. The obtained thermodynamic description will be applied to calculate equilibrium phase diagrams important for understanding interactions between layers in thermal barrier coating (TBC) systems and interaction between cathode material and solid electrolyte in solid oxide fuel cell. The calculations of diffusionless transformations will be used to understand effect of doping on TBC stability and durability.