About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Phase Transformations and Microstructural Evolution
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Presentation Title |
Phase Equilibrium and New Solid Solutions in the Sc2O3-TiO2-Fe2O3 System at 1300 °C |
Author(s) |
Victor Emmanuel Alvarez Montano, Francisco Brown, Subhash Sharma, Miguel Olivas Martínez, Alejandro Durán |
On-Site Speaker (Planned) |
Victor Emmanuel Alvarez Montano |
Abstract Scope |
In the quest for innovative materials for technological applications, this study investigates the phase relations in the ternary system Sc2O3-TiO2-Fe2O3 at 1300 °C in air. Using the quenching method and powder X-ray diffractometry, we identified stable phases at this temperature. The binary phases Fe2TiO5, Sc2TiO5, and Sc4Ti3O12 are stable within the system. In the Fe2O3-Sc2O3 binary system, terminal solid solutions with C-type cubic structures (Sc2-2xFe2xO3, 0 ≤ x ≤ 0.57) and hematite-type hexagonal structures (Fe2-2xSc2xO3, 0 ≤ x ≤ 0.23) were observed. A solid solution with the formula Sc2-2xFe2xTiO5 (0 ≤ x ≤ 1) and pseudobrookite-type structure exists along the Sc2TiO5-Fe2TiO5 phase junction, with lattice parameters conforming to Vegard's law. Additionally, the ternary system Sc2O3-TiO2-Fe2O3 features solid solutions with cubic C-type, hexagonal hematite-type, and orthorhombic pseudobrookite-type structures. |
Proceedings Inclusion? |
Planned: |
Keywords |
Energy Conversion and Storage, Characterization, Phase Transformations |