UHTC-carbon fibre composites: Preparation, oxyacetylene torch testing and characterisation

Research output: Contribution to journalArticle

Authors

  • A. Paul
  • S. Venugopal
  • B. Vaidhyanathan
  • A. C J Heaton
  • P. M. Brown

External organisations

  • Loughborough University
  • DSTL

Abstract

Current generation carbon-carbon (C-C) and carbon-silicon carbide (C-SiC) materials are limited to service temperatures below 1800°C and materials are sought that can withstand higher temperatures and ablative conditions for aerospace applications. One potential materials solution is carbon fibre-based composites with matrices composed of one or more ultra-high temperature ceramics (UHTCs); the latter are intended to protect the carbon fibres at high temperatures whilst the former provides increased toughness and thermal shock resistance to the system as a whole. Carbon fibre-UHTC powder composites have been prepared via a slurry impregnation and pyrolysis route. Five different UHTC compositions have been used for impregnation, viz. ZrB 2, ZrB 2-20vol% SiC, ZrB 2-20vol% SiC-10vol% LaB 6, HfB 2 and HfC. Their high-temperature oxidation resistance has been studied using a purpose built oxyacetylene torch test facility at temperatures above 2500°C and the results are compared with that of a C-C benchmark composite.

Details

Original languageEnglish
Pages (from-to)423-432
Number of pages10
JournalJournal of the European Ceramic Society
Volume33
Issue number2
Early online date13 Sep 2012
Publication statusPublished - Feb 2013

Keywords

  • Oxidation, Oxyacetylene torch testing, Ultra-high temperature