Solid-phase Relationships in the Tl2Te-Tl2Te3-TlTbTe2 System and Thermodynamic Properties of Thallium–Terbium Tellurides
| Autor: | Dunya M. Babanly, S. Z. Imamaliyeva, Vagif A. Qasymov, Mahammad B. Babanly |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Ternary numeral system Electromotive force 0211 other engineering and technologies General Engineering Thermodynamics chemistry.chemical_element Terbium Partial molar property 02 engineering and technology 021001 nanoscience & nanotechnology EMF measurement Concentration cell chemistry Phase (matter) General Materials Science 0210 nano-technology Ternary operation 021102 mining & metallurgy |
| Zdroj: | JOM. 73:1503-1510 |
| ISSN: | 1543-1851 1047-4838 |
| DOI: | 10.1007/s11837-021-04623-z |
| Popis: | This work presents new data on the solid-phase equilibria of the Tl-Tb-Te ternary system in the Tl2Te-Tl2Te3-TlTbTe2 composition region and the thermodynamic functions of the TlTbTe2, and Tl9TbTe6 ternary compounds. Studies were carried out by using the electromotive forces method (EFM) and the powder x-ray diffraction technique. From the EMF measurements of the concentration cells of the type (−) TbTe (s) | glycerol + KCl + TbCl3 | (Tb in Tl-Tb-Te alloys) (s) (+) in the 300-450 K temperature interval, the relative partial thermodynamic functions of TbTe and Tb in alloys of the Tl2Te3-TlTe-TlTbTe2, and TlTe-TlTbTe2-Tl9TbTe6 three-phase regions were determined. Based on the solid-phase equilibria diagram, the potential-forming reactions responsible for the indicated partial molar quantities were determined and the standard thermodynamic functions of formation and standard entropies of the TlTbTe2 and Tl9TbTe6 ternary compounds were calculated. |
| Databáze: | OpenAIRE |
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