The effect of Si-Bi2O3 system on the ignition of the AI-CuO thermite

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dc.contributor.advisor Focke, Walter Wilhelm en
dc.contributor.postgraduate Ilunga, Kolela en
dc.date.accessioned 2013-09-07T12:55:24Z
dc.date.available 2011-10-10 en
dc.date.available 2013-09-07T12:55:24Z
dc.date.created 2011-09-06 en
dc.date.issued 2011-10-10 en
dc.date.submitted 2011-09-22 en
dc.description Dissertation (MSc)--University of Pretoria, 2011. en
dc.description.abstract The ignition temperature of the aluminium copper oxide (Al-CuO) thermite was measured using differential thermal analysis (DTA) at a scan rate of 50 °C/min in an inert nitrogen atmosphere. Thermite reactions are difficult to start as they require very high temperatures for ignition, e.g. for the Al-CuO thermite comprising micron particles it is ca. 940 °C. It was found that the ignition temperature is significantly reduced when the binary Si-Bi2O3 system is used as sensitiser. Further improvement is achieved when nano-sized particles are used. For the composition CuO + Al + Bi2O3 + Si (65.5:14.5:16:4 wt %), when all components except the aluminium fuel are nano-sized, the observed ignition temperature is reduced to ca. 615 °C and results in a thermal runaway. en
dc.description.availability unrestricted en
dc.description.department Chemical Engineering en
dc.identifier.citation Ilunga, K 2011, The effect of Si-Bi2O3 system on the ignition of the AI-CuO thermite, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/28125 > E11/9/133/gm en
dc.identifier.upetdurl http://upetd.up.ac.za/thesis/available/etd-09222011-094345/ en
dc.identifier.uri http://hdl.handle.net/2263/28125
dc.language.iso en
dc.publisher University of Pretoria en_ZA
dc.rights © 2011, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. en
dc.subject Thermite en
dc.subject Pyrotechnics en
dc.subject Ignition temperature en
dc.subject Nanoparticles en
dc.subject Melting temperature en
dc.subject Tender en
dc.subject UCTD en_US
dc.title The effect of Si-Bi2O3 system on the ignition of the AI-CuO thermite en
dc.type Dissertation en


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