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Heat flux mapping of oxyacetylene flames and their use to characterise Cf-HfB2 composites

journal contribution
posted on 2017-01-05, 16:05 authored by Anish Paul, J.G.P. Binner, Vaidhy VaidhyanathanVaidhy Vaidhyanathan, A. Heaton, Peter M. Brown
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.

Funding

The authors thank the Defence Science and Technology Laboratory (DSTL), UK, for providing the financial support for this work under contract number DSTLX- 1000015267.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Advances in Applied Ceramics

Volume

115

Issue

3

Pages

158 - 165

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.

Publisher

© Institute of Materials, Minerals and Mining Published by Taylor & Francis on behalf of the Institute

Version

  • VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

2015-09-28

Publication date

2016-02-09

Copyright date

2016

Notes

Closed access

ISSN

1743-6753

eISSN

1743-6761

Language

  • en

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