The system Ag-As-S: Phase relations between 920° and 575°c

Phase relations between 920° and 575°C in the system Ag-As-S were studied at the vapor pressure of the system by quenching experiments using sealed silica capsules as sample containers. Only liquids and binary solids were encountered in this temperature interval. Three extensive liquid-immiscibility fields are present at 920°C; two of these persist within the ternary system at 575°C. Condensed isothermal diagrams at 920°, 625°, and 575°C are presented and reactions occurring between these temperatures are discussed. Formerly Research Associate, Lehigh University, Bethlehem, Pa.