CALORIMETRIC INVESTIGATION ON THE CD-TE BINARY-ALLOYS

The enthalpy of formation of the Cd-Te solid and liquid alloys was mea sured by direct reaction calorimetry (DRC) (drop method)at 737 and 125 9 K with the help of a Tian-Calvet high temperature calorimeter. The D RC procedure used was very simple at 737 K but more sophisticated at 1 259 K due to the high vapor pressures of both components. This allowed us to determine the enthalpy of formation of the CdTe solid compound in agreement with the data of the literature and the enthalpy of forma tion of the melts in the whole range of concentration. (C) 1997 Elsevi er Science S.A.