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.

引用

页数：12

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