Abstract
Thermal, structural and emissive characteristics of the combustion of metal composite Ni-Al fibers in an inert and oxidizing media are studied using high-speed video recording, dynamic spectrometry and Langmuirprobe. The measurements have shown that combustion wave propagates at a velocity of 0.15÷0.3 m/s depending on the pressure and composition of gas media and the maximum process temperature is in the range of 2600÷3720 K. The kinetics of combustion is shown to be controlled by capillary mass transfer in metalmelts. The effects of emission of nonequilibrium gas plasma and the spontaneous electric polarization of reaction wave are found, where the difference in electrical potentials of the condensed and gas-dust phases can exceed (2÷3) 103V.
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