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

ZrO2-La2O3-Y2O3-Al2O3 体系中的相关系

• 批准号: 5455729
• 负责人: Professor Dr. Fritz Aldinger
• 金额: --
• 依托单位: Max-Planck-Institut für Intelligente Systeme
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2005-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5455729?language=en
• 关键词: Phase; relations; ZrO2; La2O3; Y2O3

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.

自洽的热力学数据库将会建立起来。将使用现有的实验相平衡数据和使用CALPHAD方法测量的热力学数值来评估包括二元和三元体系在内的参数。实验研究了ZrO_2-La_2O_3-Y_2O_3和La_2O_3-Y_2O_3-Al_2O_3系统的相平衡。基于从二元体系到三元体系的外推的初步计算将用于选择要研究的成分。所得到的热力学描述将被用于计算平衡相图，该相图对于理解热障涂层(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阴极材料与固体电解质之间的相互作用具有重要意义。无扩散相变的计算将被用来理解掺杂对TBC稳定性和耐久性的影响。