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

建立了ZrO_2-La_2O_3-Y_2O_3-Al_2O_3体系的自洽热力学数据库。包括二元和三元体系的参数将使用现有的实验相平衡数据和热力学值测量使用Calphad方法进行评估。实验研究了ZrO_2-La_2 O_3-Y_2 O_3和La_2 O_3-Y_2 O_3-Al_2 O_3体系的相平衡。初步计算的基础上外推从二元系统到三元系将用于选择组合物进行研究。所得的热力学描述将被应用于计算平衡相图重要的理解层之间的相互作用在热障涂层（TBC）系统和阴极材料和固体电解质之间的相互作用在固体氧化物燃料电池。无扩散转变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.