Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1606829 | Journal of Alloys and Compounds | 2016 | 7 Pages |
Abstract
Making use of the fact that the experimental equilibrium temperature of the reaction, Al4C3 + 6Al3V â 3V2AlC + 19Al, is 1211 ± 1 K, we calculated the standard enthalpy of formation of the MAX phase, V2AlC at 298 K and then used heat capacity results to derive its thermodynamic parameters over the 300-1400 K temperature range for the first time. Based on this work, the temperature dependence of the free energy of formation of V2AlC is given by: ÎGf0 (kJ/mol) = (â192.5 ± 14.1) + 0.0284 T. The enthalpy of formation of V2AlC, from it elements, at 298 K, is â188,300 ± 14,100 J.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Matthias T. Agne, Michel W. Barsoum,