Combustion of thermite mixtures based on mechanically alloyed aluminum-iodine material

Sergio E. Guerrero, Edward L. Dreizin, Evgeny Shafirovich

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Halogen-containing reactive materials could be used for mitigating the spread of hazardous, active biological microorganisms aerosolized as a result of explosion. Here we present experimental results on combustion of mechanically alloyed aluminum-iodine (Al·I2) powder mixed with Fe2O3, CuO, MoO3, Bi2O3, and I2O5. The mixtures were compacted into pellets and ignited with a CO2 laser. High-speed video recording was used for observations. Mixtures of the Al·I2 powder with Fe2O3 did not ignite, while mixtures of this powder with the other oxides exhibited a self-sustained propagation of the combustion front with similar burn rates. Comparison experiments with a finer, micron-sized Al powder have shown a more rapid combustion of mixtures based on metal oxides and, in contrast, a slower and unsteady combustion of Al/I2O5 thermite. These observations are interpreted based on the analysis of reaction mechanisms.

Original languageEnglish (US)
Pages (from-to)164-166
Number of pages3
JournalCombustion and Flame
Volume164
DOIs
StatePublished - Feb 1 2016

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

Keywords

  • Biocidal reactive materials
  • Heterogeneous combustion
  • Laser ignition
  • Thermites

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