Experimental investigation of the 3Tl2Se + Sb2Te 3 ↔ 3Tl2Te + Sb2Se3 phase diagram

Jafarov Y. I., Babanlı M., Shevelkov A. V., Aliev Z. S.

Journal of Alloys and Compounds, vol.555, pp.184-192, 2013 (SCI-Expanded, Scopus) identifier

  • Nəşrin Növü: Article / Article
  • Cild: 555
  • Nəşr tarixi: 2013
  • Doi nömrəsi: 10.1016/j.jallcom.2012.11.202
  • jurnalın adı: Journal of Alloys and Compounds
  • Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Səhifə sayı: pp.184-192
  • Açar sözlər: Antimony telluride, Electro-motive force, Phase diagram, Quaternary system, Thallium selenide, Thermodynamic properties
  • Açıq Arxiv Kolleksiyası: Məqalə
  • Adres: Bəli

Qısa məlumat

Phase equilibriums were established in the 3Tl2Se + Sb 2Te3 ↔ 3Tl2Te + Sb2Se 3 mutual system mainly by the X-ray powder diffraction and differential thermal analyses, with the aid of microhardness and EMF measurements applied to equilibrated alloys. According to the obtained experimental results the phase diagrams in form of the polythermal section and isothermal section at 300 K as well as the projection of the liquids surface have been constructed. It was found experimentally that the system is mutually reversible and is characterized by a wide solid solubility fields along the TlSbSe2-TlSbTe2 subsystem and within the Tl 2Se-Tl9SbSe6-Tl9SbTe 6-Tl2Te subsystem. The homogeneity and primary crystallization fields as well as the types and coordinates of non- and monovariant equilibriums were determined. The dependencies of crystallographic parameters, microhardness and EMF values upon the composition are discussed. From the EMF measurements, the partial molar functions of thallium (ΔḠ,ΔH̄,ΔS̄) were calculated for the revealed nonstoichiometric quaternary phases. © 2012 Elsevier B.V. All rights reserved.