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Standard enthalpy of formation of Sc5Si3

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Abstract

The standard enthalpy of formation of Sc5Si3 has been determined by solute-solvent drop calorimetry at (1473±2) K. The following value is reported: ΔH of (mean)=−(719.1±34.0) kJ mol−1. This result is compared with corresponding published values for the enthalpies of formation of Me5Si3, with Me=Mn, Cr, V, Ti. This comparison shows regularly increasing negative enthalpies of formation from Mn5Si3 to Sc5Si3.

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LETTTIA TOPOR, formerly Senior Research Associate, The James Franck Institute, The University of Chicago,

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Topor, L., Kleppa, O.J. Standard enthalpy of formation of Sc5Si3 . Metall Trans B 20, 879–882 (1989). https://doi.org/10.1007/BF02670193

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