Combustion of micro- and nanothermites under elevating pressure

K. Monogarov, Alia Pivkina, N. Muravyev, D. Meerov, D. Dilhan

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Non-equilibrium process of combustion-wave propagation of thermite compositions (Mg/Fe203) inside the sealed steel tube have been investigated to study the burning rate at elevating pressure. Under confinement the hot gas-phase products, formed during thermite combustion result in considerable overpressure inside the tube that reverses the gas flow and leads to pressure-driven preheating effect of the burned-gas permeation. Convective origin of this preheating effect is discussed. The pressure-time dependency is obtained experimentally. The composition was pressed inside the steel tube in pellets; the size of each part was measured to obtain burning rate-pressure dependency. Both micro- and nanosized components were used to prepare thermite compositions under study. The significant difference in burning parameters of micron- and nanosized thermites is observed and analyzed. Based on obtained results, the combustion mechanism of thermites with the micro- and nanosized components is discussed.

Original languageEnglish
Pages (from-to)362-365
Number of pages4
JournalPhysics Procedia
Volume72
DOIs
Publication statusPublished - 2015
Externally publishedYes

Keywords

  • Burning
  • Combustion
  • Heating
  • Nanothermite
  • Thermite

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Monogarov, K., Pivkina, A., Muravyev, N., Meerov, D., & Dilhan, D. (2015). Combustion of micro- and nanothermites under elevating pressure. Physics Procedia, 72, 362-365. https://doi.org/10.1016/j.phpro.2015.09.111