Thermodynamical models for phase changes between tetragonal and cubic phases in zro2-ceo2 solid solution
Thermodynamical models for phase changes between tetragonal and cubic phases in zro2-ceo2 solid solution
复制标题
zro2-ceo2固溶体中四方相和立方相之间相变的热力学模型
DOI：
10.1143/jjap.31.l1614
复制
发表时间：
1992
影响因子：
1.5
通讯作者：
M. Yoshimura
中科院分区：
文献类型：
--
作者：
M. Yashima;M. Yoshimura
通过两个模型评估了 Zr1-XCeXO2 准二元固溶体中立方相 (c-) 和四方相 (t-) 的吉布斯能。常规解模型（其中端元 c 相和 t 相之间的吉布斯能量差被假定为温度的线性函数）无法同时解释稳定相图和亚稳定相图。基于朗道二阶相变理论的数学表达式解释了这两者。
The Gibbs energies of cubic (c-) and tetragonal (t-) phases in pseudobinary solid solutions of Zr1-XCeXO2 were assessed by two models. A regular solution model in which the Gibbs energy differences between c- and t-phases of end members were assumed to be linear functions of temperature, could not explain simultaneously the stable and metastable phase diagrams. A mathematical expression on the basis of Landau's theory for the second-order phase transition explained both of them.