Thermodynamic analysis and phase characterization of high-entropy oxide Sr(Ce0.05Sn0.08Zr0.2Ti0.16Y0.3Nb0.11Al0.1)O2.9: Insights into stability, microstructure, and mechanical properties

The high-entropy oxide (HEO) Sr(Ce0.05Sn0.08Zr0.2Ti0.16Y0.3Nb0.11Al0.1)O2.9 with a significant B-sublattice cation size deviation, was predicted by thermodynamic approach and synthesized via a conventional solid-state route at 1500–1600 °C. The thermodynamic findings revealed an energy minimum at 62...

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Bibliographic Details
Published in:Ceramics international 2024-05, Vol.50 (9), p.15348-15355
Main Authors: Shishkin, Roman, Zhuravlev, Victor
Format: Article
Language:English
Subjects:
Hardness
High entropy oxide
Microstructure
Perovskite
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Summary:The high-entropy oxide (HEO) Sr(Ce0.05Sn0.08Zr0.2Ti0.16Y0.3Nb0.11Al0.1)O2.9 with a significant B-sublattice cation size deviation, was predicted by thermodynamic approach and synthesized via a conventional solid-state route at 1500–1600 °C. The thermodynamic findings revealed an energy minimum at 623 °C, influencing the stability of the HEO. These insights highlight the temperature limitations for synthesis (
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2024.01.316