Phase diagram and thermodynamic properties of the GdBr3–CsBr binary system
| Autor: | Madjid Berkani, Jan Kapała, Leszek Rycerz, Salima Haroune, Yassine Bounouri, Anna Dańczak |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Phase transition Materials science General Chemical Engineering 0211 other engineering and technologies Thermodynamics 02 engineering and technology General Chemistry Mole fraction 01 natural sciences Computer Science Applications Differential scanning calorimetry 0103 physical sciences Binary system CALPHAD Stoichiometry 021102 mining & metallurgy Phase diagram Eutectic system |
| Zdroj: | Calphad. 68:101736 |
| ISSN: | 0364-5916 |
| Popis: | Phase diagram of the GdBr3-CsBr binary system was established by Differential Scanning Calorimetry (DSC) method. This system exhibits three stoichiometric compounds, namely Cs3GdBr6, Cs3Gd2Br9 and CsGd2Br7; and three eutectics located at GdBr3 molar fraction x = 0.11 (T = 847 K), x = 0.52 (T = 798 K) and x = 0.72 (T = 859 K), respectively. Cs3GdBr6 undergoes a solid–solid phase transition at 701 K and melts congruently at 1077 K. Cs3Gd2Br9 melts incongruently at 841 K and finally CsGd2Br7 undergoes a solid–solid phase transition at 788 K and melts congruently at 880 K. Experimentally determined phase diagram was optimized by CALPHAD method and thermodynamic properties of compounds existing in the system were estimated. Phase transition of pure GdBr3were determined at 533 K and ΔHtr = 0.41 kJ mol-1. |
| Databáze: | OpenAIRE |
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