Experimental determination of the thermodynamic properties of the Laves phases in the Cr–Fe–Nb system
•The Cr–Fe–Nb system was investigated using drop solution calorimetry.•The standard enthalpies of formation of the 8 Laves phases were measured.•Values of the enthalpies of formation from this work differ from previous studies. Standard enthalpies of formation, ΔfH, of the Laves-phases within their...
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Published in | Thermochimica acta Vol. 624; pp. 47 - 54 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
20.01.2016
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Subjects | |
Online Access | Get full text |
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Summary: | •The Cr–Fe–Nb system was investigated using drop solution calorimetry.•The standard enthalpies of formation of the 8 Laves phases were measured.•Values of the enthalpies of formation from this work differ from previous studies.
Standard enthalpies of formation, ΔfH, of the Laves-phases within their solid solutions along the Cr2Nb–Fe2Nb section were measured using drop solution calorimetry for the first time. The enthalpy values change linearly from −2.9kJmol−1atom−1 for binary C15-Cr2Nb to −13.6kJmol−1atom−1 for C14-Fe2Nb. The obtained values are compared with some earlier results on the binary compounds gathered mostly from ab initio calculations. |
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ISSN: | 0040-6031 1872-762X |
DOI: | 10.1016/j.tca.2015.12.001 |