Calorimetric determination of the enthalpy of formation and the description of the constitutional defects of the ordered (Ni, Co)1-y Aly phase

摘要: The enthalpy of formation the ordered phase (Ni x Co 1-x ) 0.50 Al , 0.58 0.42 with (0 < 1) and 0.30 0.15 0.55 B2 (CsCl) structure was measured by differential solution calorimetry at 1073 K as a function composition in order to describe constitutional defects. binary Ni -phase exhibits most negative (-71.27 kJ mol -1 absolute value decreases substituting nickel for cobalt constant aluminium content. dependence can be described disorder model Wagner Schottky. provides information about concentration existing defects (vacancy, antistructure atom) ternary phases.