Enthalpies of formation of the compounds of ternary phases equilibria in the Al-Ni-Ti system at 1073 K

Ternary phases in the al-ni-ti system have been investigated by direct reaction calorimetry at high temperature at t = 1073 k. enthalpies of formation of ternary intermetallic compounds of various phases have been measured. the results have been compared with the available experimental values based on calorimetric measurements and with the calculated values from theoretical models. x-ray powder diffraction (xrd) and electron probe microanalysis (epma) were used to check the crystal structure and the homogeneity of the calorimetric products. the concentration variation effect on the enthalpies of formation values has been studied, for any given element at temperature of 1073 k.