Phase relationships in the 1.5GeS2 + Cu2GeSe3 虠 1.5GeSe2 + Cu2GeS3 reciprocal system

Bagheri S. M., Alverdiyev I. J., Aliev Z. S., Yusibov Y. A., Babanlı M.

Journal of Alloys and Compounds, vol.625, pp.131-137, 2015 (SCI-Expanded, Scopus) identifier

  • Nəşrin Növü: Article / Article
  • Cild: 625
  • Nəşr tarixi: 2015
  • Doi nömrəsi: 10.1016/j.jallcom.2014.11.118
  • jurnalın adı: Journal of Alloys and Compounds
  • Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Səhifə sayı: pp.131-137
  • Açar sözlər: Copper disulfide, Cu2GeS3, Cu2GeSe3, Germanium diselenide, Reciprocal system, Solid solutions
  • Açıq Arxiv Kolleksiyası: Məqalə
  • Adres: Bəli

Qısa məlumat

The phase relations in the 1.5GeS2 + Cu2GeSe3 虠 1.5GeSe2 + Cu2GeS3 system have been investigated over the entire concentration range mainly by thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques, with the aid of microhardness and electro-motive force measurements (EMF) applied to equilibrated alloys. The liquidus surface projection, isothermal section at 800 K and the phase diagrams of the two vertical sections have been constructed. The homogeneity ranges and primary crystallization fields of phases as well as the character and temperature of non- and monovariant equilibria were determined in the system. It was found that the system is reciprocally reversible and is featured by continuous solid solubility fields along the boundary GeS2-GeSe2 and Cu2GeS3-Cu2GeSe3 systems. The partial molar thermodynamic functions (ΔG¯,ΔH¯,ΔS¯) of copper were calculated for the Cu2GeS3-xSex (for x = 0.6; 1.2; 1.8; 2.4) solid solutions based on the results of the EMF measurements.