查看文章

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 that 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 the fuel particle size. Combustion wave speed (CWS) was measured as a function of the composition and Mn particle …