EuI_2-KI二元系相图的研究

Study of Phase Diagram of EuI_2-KI Binary System

用差热分析(DTA) 和X 射线衍射(XRD) 的方法则定了EuI2 - KI二元体系在3 ×10 -4Pa 压强下的低压相图,并应用CALPHAD(CALculation of PHAse Diagram ,相图计算) 技术对这一实验相图进行热力学优化计算,获得一组描述该体系液相的热力学数据,并根据这些数据计算了热力学自洽的相图。

The phase diagram of EuI 2-KI binary system under 3×10 -4 Pa was measured by DTA and XRD methods.And the experimetal phase diagram was optimized and calculated thermodynamicaly by using CALPHAD (CALculation of PHAse Diagram)technique.A set of thermodynamic parameters for description of liquid phase of the system was obtained,which was applied to calculate the self-consistent thermodynamic phase diagram.