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

dc.contributor.advisorFocke, Walter Wilhelmen
dc.contributor.emailkolela.ilunga@aelms.comen
dc.contributor.postgraduateIlunga, Kolelaen
dc.date.accessioned2013-09-07T12:55:24Z
dc.date.available2011-10-10en
dc.date.available2013-09-07T12:55:24Z
dc.date.created2011-09-06en
dc.date.issued2011-10-10en
dc.date.submitted2011-09-22en
dc.descriptionDissertation (MSc)--University of Pretoria, 2011.en
dc.description.abstractThe 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.availabilityunrestricteden
dc.description.departmentChemical Engineeringen
dc.identifier.citationIlunga, 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/gmen
dc.identifier.upetdurlhttp://upetd.up.ac.za/thesis/available/etd-09222011-094345/en
dc.identifier.urihttp://hdl.handle.net/2263/28125
dc.language.isoen
dc.publisherUniversity of Pretoriaen_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.subjectThermiteen
dc.subjectPyrotechnicsen
dc.subjectIgnition temperatureen
dc.subjectNanoparticlesen
dc.subjectMelting temperatureen
dc.subjectTenderen
dc.subjectUCTDen_US
dc.titleThe effect of Si-Bi2O3 system on the ignition of the AI-CuO thermiteen
dc.typeDissertationen

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
dissertation.pdf
Size:
2.51 MB
Format:
Adobe Portable Document Format
Download

Collections

Theses and Dissertations (University of Pretoria)
Theses and Dissertations (Chemical Engineering)
Simple item page