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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 .
The phase diagram of YO1 .5 - Ce O2 binary system was optimized and the estimated thermodynamic parameters were obtained by using the replacement solution model. Combining the previously optimized binary systems of Zr O2 - Ce O2 and Zr O2 - YO1.5, Bonnier method was used to extrapolate the phase diagram of isothermal cross section of Zr O2 - YO1 .5 - Ce O2 ternary system at 1973K and 1873K. The results are in good agreement with the experimental results.