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Abstract
The standard molar enthalpy of formation of CrSi 2 has been determined by mixing calorimetry at (1400 ± 2) K. In these experiments the liquid alloy Cu 0.70Si 0.25Cr 0.05 is formed in the calorimeter from the elements or from CrSi 2. The following result is reported: Δf H m o(298.15 K) = −(77.4 ± 13.2) kJ · mol −1. This result is compared with earlier experimental values and with the recently predicted value of Niessen and Miedema. Among the disilicides of the first-row transition metals from Sc to Cr the least negative enthalpy of formation is found for CrSi 2.
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