Thermodynamic predictions for the manufacture of Ti2AlC MAX-phase ceramic by combustion synthesis
Letter
Thomas, T, Bowen, CR. (2014). Thermodynamic predictions for the manufacture of Ti2AlC MAX-phase ceramic by combustion synthesis
. JOURNAL OF ALLOYS AND COMPOUNDS, 602 72-77. 10.1016/j.jallcom.2014.02.149
Thomas, T, Bowen, CR. (2014). Thermodynamic predictions for the manufacture of Ti2AlC MAX-phase ceramic by combustion synthesis
. JOURNAL OF ALLOYS AND COMPOUNDS, 602 72-77. 10.1016/j.jallcom.2014.02.149
This paper presents an analysis of the SHS reaction for the manufacture of Ti2AlC MAX phase materials using self-propagating high-temperature synthesis (SHS). Enthalpy-temperature calculations are presented for the reaction 2Ti + (1 + y)Al + C → Ti2AlC + yAl. The analysis and data presented allows the determination of the adiabatic combustion temperature as a function of a variety of conditions including (i) reactant pre-heating to increase the combustion temperature or (ii) the addition of excess aluminium as a diluent to reduce the combustion temperature. As excess Al is added as a diluent, there is a decrease in Tad but it offers the potential to control the exothermicity of the SHS process and to form metal-ceramic composites. The range of criteria used for the determination of the appropriate combustion condition for SHS, such as Tad ≥ 1800 K and -ΔHr298K/Cp298K.
