ZrO_2-YO_(1.5)-CeO_2体系的相图估算

Phase Diagram Prediction of the ZrO_2-YO_(1.5)-CeO_2 System

利用置换溶液模型优化计算了 YO1 .5 - Ce O2 二元系的相图 ,并得到了估算的热力学参数 .结合以前优化的Zr O2 - Ce O2 和 Zr O2 - YO1 .5 二元系 ,并根据 Bonnier方法进行外推 ,估算了 Zr O2 - YO1 .5 - Ce O2 三元系在 1973K和 1873K下的等温截面相图 ,其结果与试验结果较吻合 .

Oxide system YO 1.5 CeO 2 has been optimized with the substitutional solution model. The obtained thermodynamic parameters are combined with the previous assessments of ZrO 2 YO 1.5 and ZrO 2 CeO 2 systems to predict the ZrO 2 YO 1.5 CeO 2 system by means of Bonnier's equation. The calculated isothermal sections are shown, which can satisfactorily account for the available experimental data.