Peer-Reviewed Journal Details
Mandatory Fields
Tribelhorn, M. J.,Venables, D. S.,Brown, E.;
Thermochimica Acta
Combustion of some zinc-fueled binary pyrotechnic systems
Optional Fields
Combustion studies of several binary pyrotechnic systems using zinc as fuel and one of the oxidants: PbO2, Pb3O4, PbO, BaO2, SrO2 or KMnO4, are reported. Combustion was very sensitive to compaction, and only mixtures of Zn/PbO2, Zn/Pb3O4 and Zn/KMnO4 sustained combustion when compacted. In all of the systems studied, the temperatures measured during passage of the combustion front past an imbedded thermocouple rapidly rose above the melting point of zinc. Burning rates were recorded for the Zn/PbO, system compacted under 50 MPa, and the Zn/KMnO, system under 50, 100 and 150 MPa. Thermochemical and kinetic data were determined where possible. Combustion mechanisms are suggested, involving condensed phase, diffusion-controlled reactions and gas-phase reactions occurring in parallel. Analysis of residues shows that ZnO is the major product in the Zn/PbO, and Zn/Pb3O4 systems, and that mixed zinc oxides are possibly the major products of the Zn/KMnO4, Zn/BaO2 and Zn/SrO2 systems.
Grant Details