The effect of Si-Bi2O3 on the ignition of the Al-CuO thermite

dc.contributor.authorIlunga, K.
dc.contributor.authorDel Fabbro, Olinto
dc.contributor.authorYapi, L.
dc.contributor.authorFocke, Walter Wilhelm
dc.contributor.emailwalter.focke@up.ac.zaen_US
dc.date.accessioned2011-02-18T09:11:56Z
dc.date.available2011-02-18T09:11:56Z
dc.date.issued2011-01
dc.description.abstractThe 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.en_US
dc.description.sponsorshipFinancial support from the THRIP programme of the Department of Trade and Industry and the National Research Foundation as well as African Explosives Limited is gratefully acknowledged.en_US
dc.identifier.citationIlunga, 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]en_US
dc.identifier.issn0032-5910
dc.identifier.other10.1016/j.powtec.2010.08.071
dc.identifier.urihttp://hdl.handle.net/2263/15875
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rights© 2010 Elsevier B.V.en_US
dc.subjectPyrotechnicsen_US
dc.subjectThermiteen_US
dc.subjectIgnition temperatureen_US
dc.subjectNanoparticlesen_US
dc.subject.lcshNanochemistryen
dc.subject.lcshMetal powdersen
dc.subject.lcshNanosiliconen
dc.subject.lcshBismuth trioxideen
dc.subject.lcshAluminum-copper alloys -- Thermal propertiesen
dc.subject.lcshNanoparticlesen
dc.titleThe effect of Si-Bi2O3 on the ignition of the Al-CuO thermiteen_US
dc.typePostprint Articleen_US

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