Hossein Aghajani - School of Metallurgy & Materials Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran
Arvin Taghizadeh Tabrizi - School of Metallurgy & Materials Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran- Nanotechnology Research & Application Center, Sabanci University, Tuzla ۳۴۹۵۶, Istanbul, Turkey
Salva Arabpour Javadi - Materials Engineering Department, University of Tabriz, Tabriz, Iran
Mohammad Ehsan Taghizadeh Tabrizi - Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran
Aytak Homayouni - Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran
Sahand Behrangi - Department of Physical Electronics, Masaryk University, Brno, Czech

Understanding the phase formation mechanisms in self-propagating high-temperature synthesis from the thermodynamical aspect of view is important. In this study, the phase formation of the ternary system of nickel-titanium-silicon was studied by using the HSC software V۶.۰, and phase formation is predicted by calculating the adiabatic temperature of exothermic reaction between reagents. Then, by using X-ray diffractometer analysis, the results of the simulation were evaluated by experimental achievements. Results showed a good correlation between thermodynamical calculation and prediction with experimental. It could be concluded that the equilibrium mechanism is the dominant mechanism in phase formation in the SHS synthesis method. NiTiSi solid solution phase is obtained from the reaction between Ti۵Si۳ and Ni۲Si and Ni.

Thermodynamic, Adiabatic temperature, Self-propagating high-temperature synthesis, Phase formation