| |
| |
| |
|
Energetika tvorby sigma fází v Mo-X (X=Co, Cr, Fe) systémech
Houserová, Jana ; Šob, Mojmír
In systems Mo-Co, Mo-Cr and Mo-Fe, we performed calculations of the total energies of formation of all 32 possible occupations of sublattices in sigma phase structure. The optimisation of the lattice parameters of all structures was included. Sigma phases in studied systems exhibit positive values of energies of formation and it is supposed that the stability of the really existing sigma phases (i.e. Mo-Fe and Mo-Co) is due to configurational and vibrational entropies.
|