Manganese as fuel in slow-burning pyrotechnic time delay compositions
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Date
Authors
Swanepoel, Darren
Del Fabbro, Olinto
Focke, Walter Wilhelm
Conradie, Corrie
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley
Abstract
Manganese metal was evaluated as a fuel for slow-burning delay compositions press-filled in aluminium or compaction-rolled
in lead tubes. Oxides of antimony, bismuth, copper, manganese and vanadium were considered as oxidants. Measured burn rates
for binary mixtures varied between 5 and 22 mm s 1 but slower burning ternary and quaternary compositions were also found.
The addition of fumed silica to the Mn/MnO2 system had little effect on the propagation rate but a low level addition of hollow
glass sphere significantly reduced the burn rate. Mn MnO2
mixtures showed reliable burning over a wide stoichiometric range. In this system the fuel and the oxidant share a common
metal. They combine to form the more stable intermediate oxide (MnO) releasing considerable quantities of heat in the process.
Description
Keywords
Antimony oxide, Fumed silica, Manganese, Pyrotechnics, Time delay
Sustainable Development Goals
Citation
Swanepoel, D, Del Fabbro, O, Focke, WW & Conradie, C 2010, 'Manganese as fuel in slow-burning pyrotechnic time delay compositions', Propellants, Explosives, Pyrotechnics, vol. 35, no. 2, pp. 105-113. [http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-4087/issues]