Ag2Se-AgTlSe-TlBiSe2 quasi-ternary system

Babanly N., Aliev I., Azizov G., Babanlı M.

Russian Journal of Inorganic Chemistry, vol.51, no.4, pp.642-644, 2006 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 51 Issue: 4
  • Publication Date: 2006
  • Doi Number: 10.1134/s0036023606040231
  • Journal Name: Russian Journal of Inorganic Chemistry
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.642-644
  • Open Archive Collection: Article
  • Azerbaijan State University of Economics (UNEC) Affiliated: Yes

Abstract

Phase equilibria in the Ag-Tl-Bi-Se system in the region Ag 2Se-AgTlSe-TlBiSe2 (I) have been investigated by DTA, X-ray powder diffraction analysis, microstructural analysis, and microhardness measurements. The Ag2Se-TlBiSe2, AgTlSe-AgBiSe 2 (0-50 mol % AgBiSe2), and Ag3TlSe 2-TlBiSe2 polythermal sections and the projection of the liquidus surface have been constructed. It has been found that system I is quasi-ternary; it consists of the primary crystallization fields of the phases based on the Ag2Se, TlBiSe2, AgTlSe, Ag 3TlSe2, and Ag7TlSe4 compounds. The system is characterized by peritectic and eutectic four-phase equilibria. The coordinates of the invariant points are the following: 690 K, 50 mol % Ag 2Se, 7 mol % TlBiSe2 (P 3); 658 K, 39 mol % Ag2Se, 4 mol TlBiSe2 (P 4); and 650 K, 32 mol % Ag2Se, 3.5 mol % TlBiSe2 (E). © Pleiades Publishing, Inc., 2006.