Evaluation of thermodynamic data and phase equilibria in the system Ca-Cr-Cu-Fe-Mg-Mn-S Part II: Ternary and quasi-ternary subsystems. (March 2017)

• Record Type: Journal Article
• Authors: Jantzen, Tatjana; Hack, Klaus; Yazhenskikh, Elena; Müller, Michael
• Is Part Of: Calphad. Volume 56(2017)
• Page Start: 286
• Page End: 302
• Publication Date: 2017-03
• Subjects: Sulfide -- Phase diagrams -- Thermodynamic modeling -- Thiospinel -- Chalcopyrite -- Brezinaite; Phase diagrams -- Data processing -- Periodicals; Thermochemistry -- Data processing -- Periodicals; Diagrammes de phases -- Informatique -- Périodiques; Thermochimie -- Informatique -- Périodiques; Thermodynamica; Electronic journals; 541.363
• DOI: 10.1016/j.calphad.2017.01.007
• Languages: English
• ISSNs: 0364-5916

Abstract

Abstract: The Ca-Cr-Cu-Fe-Mg-Mn-S system has been thermodynamically assessed using all available experimental data. Sulfur is introduced into the thermodynamic description of 8 solid solution phases such as Thiospinel, Digenite, Oldhamite, Cu2 S-I, Cu2 S-II, Pyrrhotite, Brezinaite, Chalcopyrite-HT using available experimental information. Particular attention was given to the phase Pyrrhotite which forms at high temperatures a solid solution with end-members Fe1−x S and Cr1−x S in the ternary Cr-Fe-S system, and also the phase Digenite, which exhibits very wide solubility toward Pyrrhotite in the Cu-Fe-S system. In this part of the report ternary and quasi-ternary subsystems are presented while all relevant binary systems as well as pseudo-binary sections have already been presented in Part I of this series. Highlights: Ca-Cr-Cu-Fe-Mg-Mn-S system thermodynamically assessed. Ternary Me1 -Me2 -S and quasi-ternary systems Me1 S-Me2 S-Me3 S considered here. Modified associate species model used for the liquid phase. 8 solid solutions introduced using the multi-sublattice approach. Calculated phase diagrams and thermodynamic properties in good agreement with the experimental data.