Thermodynamic and Kinetic Considerations in Production of γ-TiAl by KRH Combustion Synthesis Process

KRH is a new combustion synthesis process for production of gamma titanium aluminide. This process is on the basis of reaction between TiO2, Al, Ca and KClO4. Thermodynamic and kinetic considerations of KRH process has been investigated in this article. On the basis of measurements, this process ignites at 505°C and temperature reaches to 1950°C. On the other hand, thermodynamic calculations showed that the maximum temperature of system is 2050°C. These temperatures are high enough for melting of TiAl and CaAl4O7 and evaporation of KCl.