Features of the thermal structure of reaction waves in the Ti - Mo – N₂ system

Abstract The thermal structure of filtration combustion waves in the metallic Mo – Ti system in nitrogen is studied by dynamic color pyrometry. It’s shown that the combustion of the samples is conducted in the surface mode. This mode is characterized by the propagation of a reaction wave in a narrow near-surface layer of the sample followed by the penetration of combustion from the surface to the centre. The peculiarities of combustion observed are the presence of local reaction sources in the surface reaction wave and the complex three-dimensional structure of the temperature field in the reaction wave (local reaction source – surface reaction wave - inside reaction wave). The measurements have shown that with increasing nitrogen pressure, the maximum temperature inside the sample rises by 200 K.

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