Thermodynamic Analysis of Fe-Ti-C System

The thermodynamics of Fe-Ti-C system was calculated by the calculation of phase diagram (CALPHAD) method to investigate the influences of Fe content and C/Ti atomic ratio on the adiabatic temperature (Tad) and equilibrium phases. It is revealed that Fe content has more effects on the adiabatic temperature than on equilibrium phases. The desired equilibrium phases (TiC+Fe) can be obtained no matter how Fe content value varies when C/Ti (atomic ratio) is fixed as about 1.0. The combustion synthesis reaction of Fe-Ti-C system can be ignited thermodynamically with Fe weight content up to 55%. C/Ti atomic ratio has more effects on the equilibrium phases than on adiabatic temperature. The temperature of graphite appearing decreases when C/Ti (atomic ratio) reduces. And the graphite content varies from about 1% to 16% when C/Ti (atomic ratio) varies from 1.0 to 1.4 at low combustion temperature.