Contribution to the Calorimetric Study of the Bi-Ni-Sn Ternary System: Experimental and Theoretical Data

Abstract

In the present work, the partial and integral enthalpies of mixing ternary Bi-Ni-Sn liquid alloys were measured at 1000°C using the drop calorimetry method. The measurements were performed along five binary isopleths BixSn1-x by addition of nickel and three binary isopleths BixNi1-x by addition of tin. These same thermodynamic quantities were also calculated using three geometric models. A zone of non-miscibility was identified. The study showed that the integral and partial enthalpies are exothermic, particularly for nickel-rich sections (F, G, and H sections). On the other hand, this work has indicated the possible presence of a domain of immiscibility as reported in other works.