UDC 544.3:669.71
Yu. Belokon doctoral candidate, c.t.s.
J. Oginskiy, head. of department, d.t.s.
K. Belokon , associate professor, c.t.s.
A. Zherebtsov, senior teacher

THEORETICAL AND EXPERIMENTAL DETERMINATION OF ENERGY OF
ACTIVATION FOR FORMATION OF INTERMETALLIDES IN SYSTEMS
«NICKEL-ALUMINIUM» AND «TITAN-ALUMINIUM»

Zaporizhska state engineering academy

Two methods of determination of activation energy for reaction of formation of
intermetallides are considered: theoretical method of calculation which is based on the
results of thermodynamics analysis of flowing of SHS-reactions, and experimental method,
based on research of kinetics of formation of intermetallide phases. It is set that activation
energies for the systems Ni-Al and Ti-Al fold ~45 and ~82 kJou/mole respectively. It is
shown that a difference between the values of activation energies, got noted methods,
does not exceed 5 %. Got results can be applied for the further calculations of physical
and chemical model of flowing of reactions for the intermetallide systems at non-stationary
temperature conditions.

Keywords: activation energy, SHS-reaction, thermodynamics analysis, kinetics,
intermetallides

THEORETICAL AND EXPERIMENTAL DETERMINATION OF ENERGY OF
ACTIVATION FOR FORMATION OF INTERMETALLIDES IN SYSTEMS
«NICKEL-ALUMINIUM» AND «TITAN-ALUMINIUM»