The effect of Si-Bi2O3 on the ignition of the Al-CuO thermite
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Date
Authors
Ilunga, K.
Del Fabbro, Olinto
Yapi, L.
Focke, Walter Wilhelm
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
The ignition temperature of the Al–CuO thermite was measured using DTA at a scan rate of 50 °C min−1 in a
nitrogen atmosphere. Thermite reactions are difficult to start as they require very high temperatures for ignition,
e.g. for Al–CuO thermite comprising micron particles it is ca. 940 °C. Itwas found that the ignition temperature is
significantly reduced when the binary Si–Bi2O3 system is added as sensitizer. Further improvement is achieved
when the reagents are nano-sized powders. For the composition Al+CuO+Si+Bi2O3 (65.3:14.7:16:4 wt.%),
with all components nano-sized, the observed ignition temperature is ca. 613 °C and a thermal runaway reaction
is observed in the DTA.
Description
Keywords
Pyrotechnics, Thermite, Ignition temperature, Nanoparticles
Sustainable Development Goals
Citation
Ilunga, K, Del Fabbro, O, Yapi, L & Focke, WW 2011, 'The effect of Si-Bi2O3 on the ignition of the Al-CuO thermite', Powder Technology, vol. 205, no. 1-3, pp. 97-102. [http://www.elsevier.com/locate/powtec]