Abstract
Sm2TiO5 and Sm2Ti2O7 rare earth are synthesized by solid state reaction in air at temperature 1673 K using Sm2O3 and TiO2 oxides as starting materials. Their high temperature heat capacities and phase transformation properties are determined by differential scanning calorimetry and ultra-high temperature differential thermal analysis, respectively. This work detects the structure transformation between orthorhombic and hexagonal Sm2TiO5 and confirms the existence of Sm4Ti3O12 above 1945 K by quenching the laser melted samples. CALPHAD assessment of Sm2O3–TiO2 system is performed based on new and published experimental data.
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