Experimental Thermodynamic Study on the Ag-Sb System at Elevated Temperatures

In this paper, the standard thermodynamic properties of Ag₃Sb and Ag₆Sb intermetallic compounds have been studied by the solid state EMF-method, using Ag+ ion conducting ß-alumina and AgI. The intermetallic compounds were synthesized from pure substances in evacuated silica ampoules and their formation were confirmed by the SEM-EDS analyses. The EMF measurements were made on electrochemical cells of the type [Ag | ß-alumina | Ag-Sb] and [Ag | AgI | Ag-Sb]. The usage of ß-alumina electrolyte, in this study, enabled thermodynamic measurements of the Ag-Sb-intermetallic compounds above 710 K, hitherto unreported. Based on the new experimental data, thermodynamic properties of the Ag-Sb-intermetallic compounds have been determined. The obtained experimental values have been compared with the available literature data.