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Title: Heat flux mapping of oxyacetylene flames and their use to characterise Cf-HfB2 composites
Authors: Paul, Anish
Binner, J.G.P.
Vaidhyanathan, Bala
Heaton, A.
Brown, Peter M.
Issue Date: 2016
Publisher: © Institute of Materials, Minerals and Mining Published by Taylor & Francis on behalf of the Institute
Citation: PAUL, A. ... et al., 2016. Heat flux mapping of oxyacetylene flames and their use to characterise Cf-HfB2 composites. Advances in Applied Ceramics, 115 (3), pp. 158 - 165.
Abstract: Cost effective and fast ultra-high-temperature testing methods such as oxyacetylene torch testing are extremely useful for the rapid screening of ultra-high-temperature ceramic (UHTC) materials for hypersonic applications. There is no report in the literature, however, of an organised study to measure the heat flux and how it varies with gas flow rate, gas flow ratio and distance from the nozzle tip for an oxyacetylene flame. In this paper, the authors report for the first time the heat flux mapping of an oxidising, neutral and reducing flame. The measured heat flux was as high as ∼17 MW m-2 at a distance of 10 mm from the nozzle, which is much higher than that previously reported in the literature. Torch testing was carried out for Cf-HfB2 UHTC composites at this heat flux and the results are presented along with detailed microstructural characterisation.
Description: Closed access
Sponsor: The authors thank the Defence Science and Technology Laboratory (DSTL), UK, for providing the financial support for this work under contract number DSTLX- 1000015267.
Version: Published
DOI: 10.1080/17436753.2015.1104050
URI: https://dspace.lboro.ac.uk/2134/23586
Publisher Link: http://dx.doi.org/10.1080/17436753.2015.1104050
ISSN: 1743-6753
Appears in Collections:Closed Access (Materials)

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