SURFACES OF CRYSTALLIZATION AND PHASE RELATIONS IN THE 6Ag2Se+Ag8SiTe6↔6Ag2Te+Ag8SiSe6 RECIPROCAL SYSTEM QARŞILIQLI 6Ag2Se+Ag8SiTe6↔6Ag2Te+Ag8SiSe6 SİSTEMİNDƏ KRİSTALLAŞMA SƏTHLƏRİ VƏ FAZA TARAZLIQLARI

Amiraslanova A., Babanly K., İMAMƏLİYEVA S., Akhmedov E., Yusibov Y. A., Babanlı M.

Azerbaijan Chemical Journal, vol.2023, no.3, pp.6-17, 2023 (Scopus) identifier

  • Nəşrin Növü: Article / Article
  • Cild: 2023 Say: 3
  • Nəşr tarixi: 2023
  • jurnalın adı: Azerbaijan Chemical Journal
  • Jurnalın baxıldığı indekslər: Scopus
  • Səhifə sayı: pp.6-17
  • Açar sözlər: argyrodites, phase equilibria, polymorphic transformation, reciprocal system, silver-silicon selenide, silver-silicon telluride, solid solutions
  • Açıq Arxiv Kolleksiyası: Məqalə
  • Adres: Bəli

Qısa məlumat

The paper presents the results of a study of phase equilibria in the 6Ag2Se+Ag8SiTe6↔6Ag2Te+Ag8SiSe6 reciprocal system by DTA and XRD methods. The projection of the liquidus surface, isothermal sections at 300, 500, 1150 K, and some polythermal sections of the phase diagram are constructed. It is shown that the system is reversible-reciprocal. It is characterized by the formation of continuous high-temperature solid solutions along the Ag8SiSe6-Ag8SiTe6 (δ) and Ag2Se-Ag2Te (α) boundary systems. It has been established that the liquidus surface of the reciprocal system consists of two fields of primary crystallization α-and δ-phases. These surfaces are delimited by a eutectic curve with monovariant equilibrium L↔α+δ. In the subsolidus part of the system, a complex interaction is observed associated with the polymorphism of the initial compounds and phases based on them.