Experimental investigation and thermodynamic evaluation of the ZrO2-TiO2-SrO system

被引：1
|
作者：
Feng, Qisheng [1 ,2 ]
Lv, Mingrui [1 ,2 ]
Mao, Lu [1 ,2 ]
Chen, Guangyao [1 ,2 ]
Zou, Xingli [1 ,2 ]
Lu, Xionggang [1 ,2 ,3 ]
Li, Chonghe [1 ,2 ]
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, State Key Lab Adv Special Steel, Shanghai Key Lab Adv Ferrometallurgy, Shanghai 200444, Peoples R China
[2] Shanghai Special Casting Engn Technol Res Ctr, Shanghai 201605, Peoples R China
[3] Shanghai Dianji Univ, Sch Mat Sci & Engn, Shanghai 201306, Peoples R China
来源：
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2023年 / 83卷
基金：
中国国家自然科学基金;
关键词：
ZrO2-TiO2-SrO system; CALPHAD; Thermodynamic model; Thermodynamic evaluation; Phase diagram; PHASE-EQUILIBRIA; DEGREES-C; DIAGRAM; SRTIO3; MICROSTRUCTURE; CONDUCTIVITY;
D O I：
10.1016/j.calphad.2023.102613
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In the present work, a series of ZrO2-TiO2-SrO ceramic samples were prepared through solid-state reactions, and the phase relationships at 1473 K were systematically characterized. For the TiO2-SrO binary system, the presence of Sr4Ti3O10 was confirmed and the binary system was reassessed through CALPHAD method by using both the latest experimental data and first-principles calculations. The thermodynamic parameters of the TiO2-SrO system were combined with those of the ZrO2-TiO2 and ZrO2-SrO systems, and a set of self-consistent thermodynamic parameters of the ZrO2-TiO2-SrO system was optimized according to our measurements. Finally, the isothermal sections at 1473 K and 1733 K, the vertical section of SrTiO3-SrZrO3 and the liquidus surface projection were calculated. The calculated results agree well with the available experimental data, which proves the self-consistency and reliability of the present thermodynamic database.
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页数：12
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