Analyzing Energy Propagation in Non-Gas Generating Nanocomposite Reactive Materials

Keerti Kappagantula, Billy Clark, Michelle Pantoya

Research output: Contribution to journalArticlepeer-review

Abstract

Nanoenergetic composites are being examined for their use as energy storage and delivery materials. For this application, non-gas generating mixtures that produce enough energy to sustain reaction propagation are ideal. A potentially promising formulation for this application is comprised of Manganese (Mn) powder mixed with Manganese dioxide (MnO2) because thermoequilibrium calculations predict the Mn/MnO2 reaction is non-gas generating and highly exothermic. The objectives of this study were to examine the flame propagation behavior of various mass percentages of Mn and MnO2 and evaluate the influence of fuel particle size. Results showed that conduction is the dominant energy transfer mechanism for the reaction even in the loose powder configuration regardless of fuel particle size. Combustion wave speed (CWS) was measured as a function of composition and Mn particle diameter. Nanometric Mn particles (referred to as nano Mn) produced higher CWS than micrometric Mn particles (referre
Original languageEnglish
Pages (from-to)640-646
JournalEnergy and Fuels
StatePublished - 2011

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