{"title":"Phase relations at 1573 K and 1673 K and thermodynamic assessment of ZrO2-SrO-BaO system","authors":"","doi":"10.1016/j.calphad.2024.102754","DOIUrl":null,"url":null,"abstract":"<div><div>The thermodynamic database of ZrO<sub>2</sub>-SrO-BaO system was essential for the development of high-stability refractories. Thirteen samples were prepared using the solid-state reaction method to investigate the isothermal sections of ZrO<sub>2</sub>-SrO-BaO system at 1573 K and 1673 K. Four solid solution phases, (Ba, Sr)ZrO<sub>3</sub>, (Ba, Sr)<sub>2</sub>ZrO<sub>4</sub>, (Ba, Sr)<sub>3</sub>Zr<sub>2</sub>O<sub>7</sub>, and (Ba, Sr)<sub>4</sub>Zr<sub>3</sub>O<sub>10</sub>, were identified. Based on the re-assessment of SrO-BaO sub-binary system, a self-consistent thermodynamic database of ZrO<sub>2</sub>-SrO-BaO system was obtained. Calculated isothermal sections at 1573 K and 1673 K and liquidus projection showed good agreement with existing experimental data. Finally, a potential refractory (Sr<sub>0.06</sub>, Ba<sub>0.94</sub>)ZrO<sub>3</sub> with better stability was designed using the thermodynamic database of ZrO<sub>2</sub>-SrO-BaO system.</div></div>","PeriodicalId":9436,"journal":{"name":"Calphad-computer Coupling of Phase Diagrams and Thermochemistry","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Calphad-computer Coupling of Phase Diagrams and Thermochemistry","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0364591624000968","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The thermodynamic database of ZrO2-SrO-BaO system was essential for the development of high-stability refractories. Thirteen samples were prepared using the solid-state reaction method to investigate the isothermal sections of ZrO2-SrO-BaO system at 1573 K and 1673 K. Four solid solution phases, (Ba, Sr)ZrO3, (Ba, Sr)2ZrO4, (Ba, Sr)3Zr2O7, and (Ba, Sr)4Zr3O10, were identified. Based on the re-assessment of SrO-BaO sub-binary system, a self-consistent thermodynamic database of ZrO2-SrO-BaO system was obtained. Calculated isothermal sections at 1573 K and 1673 K and liquidus projection showed good agreement with existing experimental data. Finally, a potential refractory (Sr0.06, Ba0.94)ZrO3 with better stability was designed using the thermodynamic database of ZrO2-SrO-BaO system.
期刊介绍:
The design of industrial processes requires reliable thermodynamic data. CALPHAD (Computer Coupling of Phase Diagrams and Thermochemistry) aims to promote computational thermodynamics through development of models to represent thermodynamic properties for various phases which permit prediction of properties of multicomponent systems from those of binary and ternary subsystems, critical assessment of data and their incorporation into self-consistent databases, development of software to optimize and derive thermodynamic parameters and the development and use of databanks for calculations to improve understanding of various industrial and technological processes. This work is disseminated through the CALPHAD journal and its annual conference.