A coupled experimental phase diagram study and thermodynamic modeling of the Li₂O-CaO-Al₂O₃ and Li₂O-CaO-SiO₂ systems was conducted at 1 atm total pressure. Differential scanning calorimetry (DSC) measurements were performed in the Li₂O-CaO-Al₂O₃ and Li₂O-CaO-SiO₂ systems. In addition, the phase relations in the Li₂O-CaO-Al₂O₃ system were determined by equilibration/quenching experiments at 1643 and 1743 K, and the phases were characterized with X-ray diffraction (XRD) and Electron-probe micro analysis-wavelength dispersive spectroscopy (EPMA-WDS). The absence of ternary compounds or solid solutions was confirmed. Congruent melting of Li₂CaSiO₄ compound in the Li₂O-CaO-SiO₂ system was determined at 1350 ± 5 K. Thermodynamic optimization of the Li₂O-CaO-Al₂O₃ and Li₂O-CaO-SiO₂ systems was carried out based on new phase diagram experiments and critically evaluated literature data. The phase diagrams of the quaternary Li₂O-CaO-Al₂O₃-SiO₂ system were predicted using the thermodynamic models with optimized model parameters.

在总压力为1 atm的条件下进行了Li ₂ O-CaO-Al ₂ O ₃和Li ₂ O-CaO-SiO ₂系统的耦合实验相图研究和热力学建模。在Li ₂ O-CaO-Al ₂ O ₃和Li ₂ O-CaO-SiO ₂系统中进行差示扫描量热法（DSC）测量。另外，Li ₂ O-CaO-Al ₂ O _3中的相位关系通过在1643和1743 K上的平衡/猝灭实验确定了该体系，并通过X射线衍射（XRD）和电子探针显微分析-波长色散光谱（EPMA-WDS）对相进行了表征。确认不存在三元化合物或固溶体。李的全等熔化₂ CASIO ₄在锂化合物₂ -O-CaO系的SiO ₂体系在1350±李的5 K.热力学优化来确定₂ -O-CaO系的Al ₂ ö ₃和Li ₂ O形CaO系的SiO ₂系统是根据新的相图实验和严格评估的文献数据进行的。四元锂的相图使用具有优化模型参数的热力学模型预测了₂ O-CaO-Al ₂ O ₃ -SiO ₂系统。