Thermodynamic Calculation and 3D Modeling of Immiscibility Boundaries for Liquid Alloys of Copper, Lead and Sulfur

Mammadov A., Ibragimova F., Tagiev D., Babanlı M.

12th International Conference on Theory and Application of Soft Computing, Computing with Words and Perception and Artificial Intelligence, CSCCW 2024, Budva, Montenegro, 26 - 27 August 2024, vol.1472 LNNS, pp.251-257, (Full Text) identifier

  • Nəşrin Növü: Conference Paper / Full Text
  • Cild: 1472 LNNS
  • Doi nömrəsi: 10.1007/978-3-031-94788-9_31
  • Çap olunduğu şəhər: Budva
  • Ölkə: Montenegro
  • Səhifə sayı: pp.251-257
  • Açar sözlər: 3D modeling, Cu-Pb-S phase diagram, Multipurpose Genetic Algorithm, Phase boundaries, Thermodynamics
  • Açıq Arxiv Kolleksiyası: Konfrans Materialı
  • Adres: Bəli

Qısa məlumat

The homogeneity boundaries of liquid two-component solutions of sulfur with copper, lead of three component Cu-Pb-S melts are determined and approximated by solving the thermodynamic equations of heterogeneous P-T-x phase equilibrium using MGA. Experimental data were used for state diagrams of boundary systems Copper-Sulfur Lead-Sulfur and the quasi-binary section Copper (I) Sulfide -Lead (II) Sulfide. For the first time, critical temperatures (Tcr) and pressure (Pcr) were determined for the immiscibility regions of sulfur-rich liquid alloys, which have high values: Pcr = 170 ÷ 510 atm and Tcr = 1520 ÷ 1880 K. Lead (II) sulfide crystallization surfaces p-type PbS1 + x and n-type conductivity Pb1 + xS, as well as the saturated vapor pressure of diatomic sulfur molecules above the liquidus surface of lead sulfide of variable composition were calculated and modeled. All functional relationships Temperature (T)-Pressure (P)-Mole fraction (X) for the phase diagram of the Cu-Pb-S system are 3D modeled and visualized using the OriginLab computer program.