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Combustion Modes of Mixtures of Copper (II) Oxide with Aluminum and Titanium

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Combustion, Explosion, and Shock Waves Aims and scope

Abstract

The influence of the ratio of the initial components on the combustion parameters and modes of mixtures of aluminum with copper oxide has been studied. It has been shown that under normal conditions, such mixtures can burn stably when they contain not less than 30% copper oxide. Moreover, with an increase in the content of copper oxide to the stoichiometric ratio, there is a regular change in combustion mode: self-oscillatory, spin, combined convective and multi-hotspot, flame, and fireball combustion modes. In addition, the effect of the ratio of the components on the combustion of copper oxide–aluminum–titanium ternary mixtures was studied, and concentration regions were determined for four main modes of their combustion: the self-oscillatory, hotspot, flame, and fireball modes. It has been shown that the hotspot combustion of such mixtures can proceed in five different modes: a spin mode, a multi-hotspot mode, a combined convective and multi-hotspot mode, a multi-hotspot mode with the formation of a counter front, and a multi-hotspot mode with periodic ejection of combustion products. Depending on the ratio of the initial components, the condensed combustion products of mixtures of copper oxide with aluminum and titanium were found to contain copper, Al3Ti, Ti3Al, and CuAl5Ti2 intermetallic compounds, and Al2O3, TiO2, TiO, Cu2O, Al2TiO5, and Cu3Ti3O oxides.

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432, Chernogolovka, Russia

    Yu. M. Mikhailov & V. V. Aleshin

  2. Merzhanov Institute of Structural Macrokinetics and Problems of Materials Science, Russian Academy of Sciences, 142432, Chernogolovka, Russia

    V. I. Vershinnikov, T. I. Ignat’eva & D. Yu. Kovalev

Authors
  1. Yu. M. Mikhailov
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  2. V. V. Aleshin
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  3. V. I. Vershinnikov
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  4. T. I. Ignat’eva
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  5. D. Yu. Kovalev
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Corresponding authors

Correspondence to V. V. Aleshin or V. I. Vershinnikov.

Additional information

Translated from Fizika Goreniya i Vzryva, 2021, Vol. 57, No. 5, pp. 67-73.https://doi.org/10.15372/FGV20210506.

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Mikhailov, Y.M., Aleshin, V.V., Vershinnikov, V.I. et al. Combustion Modes of Mixtures of Copper (II) Oxide with Aluminum and Titanium. Combust Explos Shock Waves 57, 570–575 (2021). https://doi.org/10.1134/S0010508221050063

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  • DOI: https://doi.org/10.1134/S0010508221050063

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