Kai Xu, Taowen Zheng, Xuezhen Che, Liumei Su, Dandan Huang
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引用次数: 0
Abstract
The phase relationship in the Gd2O3-Nd2O3-ZrO2 system at 1673 K and 1873 K was investigated by X-ray diffraction, scanning electron microscopy and electron probe microanalysis. Samples with different compositions were annealed in air at temperatures of 1673 K and 1873 K after preparation. The isothermal section of the Gd2O3-Nd2O3-ZrO2 ternary system has been developed. No ternary compound was found at 1673 K and 1873 K. There exist fields of solid solution based on cubic (C) and monoclinic (B) modifications of Gd2O3, tetragonal (T) and cubic modifications of ZrO2, A-Nd2O3, and pyrochlore-type Nd2Zr2O7 phase.
通过 X 射线衍射、扫描电子显微镜和电子探针显微分析，研究了 1673 K 和 1873 K 下 Gd2O3-Nd2O3-ZrO2 系统的相关系。不同成分的样品在制备后分别在 1673 K 和 1873 K 的温度下进行空气退火。开发出了 Gd2O3-Nd2O3-ZrO2 三元体系的等温段。Gd2O3 的立方（C）和单斜（B）、ZrO2 的四方（T）和立方、A-Nd2O3 和火成岩型 Nd2Zr2O7 相都存在固溶体。
期刊介绍：
The design of industrial processes requires reliable thermodynamic data. CALPHAD (Computer Coupling of Phase Diagrams and Thermochemistry) aims to promote computational thermodynamics through development of models to represent thermodynamic properties for various phases which permit prediction of properties of multicomponent systems from those of binary and ternary subsystems, critical assessment of data and their incorporation into self-consistent databases, development of software to optimize and derive thermodynamic parameters and the development and use of databanks for calculations to improve understanding of various industrial and technological processes. This work is disseminated through the CALPHAD journal and its annual conference.
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