A coupled phase diagram experimental study and thermodynamic optimization of the Li2O-CaO-Al2O3 and Li2O-CaO-SiO2 systems, and prediction of the phase diagrams of the Li2O-CaO-Al2O3-SiO2 system

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A coupled phase diagram experimental study and thermodynamic optimization of the Li2O-CaO-Al2O3 and Li2O-CaO-SiO2 systems, and prediction of the phase diagrams of the Li2O-CaO-Al2O3-SiO2 system

机译：Li2O-CaO-Al2O3和Li2O-CaO-SiO2系统的耦合相图实验研究和热力学优化，以及Li2O-CaO-Al2O3-SiO2系统的相图预测

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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.

机译：Li2O-CaO-Al2O3和Li2O-CaO-SiO2系统的耦合实验相图研究和热力学建模在1atm总压力下进行。在Li 2 O-CaO-Al2O3和Li 2 O-CaO-SiO2系统中进行差扫描量热法（DSC）测量。此外，通过1643和1743k的平衡/猝灭实验确定Li 2 O-CaO-Al2O3系统中的相位关系，并用X射线衍射（XRD）和电子探针微分析 - 波长分散光谱表征各相（EPMA-WDS）。确认不存在三元化合物或固溶体。 Li2Ca-CaO-SiO2系统中的Li2CasiO4化合物的一致性熔化在1350 +/- 5K中测定。基于新的相图实验，对Li2O-CaO-Al2O3和Li2O-CaO-SiO2系统进行热力学优化，并批判性地进行评估文献数据。使用具有优化模型参数的热力学模型来预测第四级Li2O-CaO-Al2O3-SiO2系统的相图。

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《Journal of the European Ceramic Society》 |2020年第5期|共15页
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正文语种 eng
中图分类陶瓷工业;
关键词
Li2O-CaO-Al2O3; Li2O-CaO-SiO2; Li2CaSiO4; Phase diagram; Thermodynamic modeling; Ceramics;

机译：Li2O-CaO-Al2O3;Li2O-CaO-SiO2;Li2casio4;相图;热力学建模;陶瓷;

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机译：Li2O-CaO-Al2O3和Li2O-CaO-SiO2系统的耦合相图实验研究和热力学优化，以及Li2O-CaO-Al2O3-SiO2系统的相图预测
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A coupled phase diagram experimental study and thermodynamic optimization of the Li2O-CaO-Al2O3 and Li2O-CaO-SiO2 systems, and prediction of the phase diagrams of the Li2O-CaO-Al2O3-SiO2 system

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