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BaO-CaO-ZrO2是一个重要的锆酸盐陶瓷材料三元体系,但该体系的相图和热力学资料却很少。在评估BaO-CaO,BaZrO3-CaZrO3二元体系现有相图和热力学数据的基础上,采用CALPHAD(calculation of phase diagram)技术进行了相图优化计算,并对一些存在分歧的相进行了分析。利用子二元体系CaO-ZrO2,BaO-ZrO2相图预测了BaO-CaO-ZrO2体系在1941K和2041K时的等温截面。最后,以BaZrO3和CaZrO3为基元材料设计出新型复合耐火材料Ba0.96Ca0.04ZrO3。它能为开发用于钛合金熔炼和铸造用的耐火材料提供参考。
BaO-CaO-ZrO2 is an important zirconate ternary ceramic material system, but the system phase diagram and thermodynamic data is very small. Based on the existing phase diagrams and thermodynamic data of BaO-CaO and BaZrO3-CaZrO3 binary systems, the phase diagram calculation is carried out by using CALPHAD (calculation of phase diagram) technique, and some disaggregated phases are analyzed. The isothermal cross section of BaO-CaO-ZrO2 system at 1941K and 2041K was predicted by using the binary binary systems CaO-ZrO2 and BaO-ZrO2. Finally, a new composite refractory Ba0.96Ca0.04ZrO3 was designed based on BaZrO3 and CaZrO3. It provides a reference for the development of refractories for the melting and casting of titanium alloys.