The mechanism of formation of copper aluminide in the thermal explosion mode

The mechanism of formation of copper aluminides in the thermal explosion mo de was studied. A molded mixture of copper and aluminum powders was heated to the self-ignition temperature by the radiation of a tungsten heater. The phase transformations were detected by time-resolved X-ray diffraction (TR XRD). The kinetics of heat release due to the chemical reaction was studied by measuring the temperature of the sample. The macrokinetic stages of the process were revealed, and the apparent activation energy of each stage wa s estimated.