Oxyacetylene torch testing and microstructural characterization of tantalum carbide

Research output: Contribution to journalArticle

Authors

  • A. Paul
  • Jon Binner
  • B. Vaidhyanathan
  • A. C J Heaton
  • P. M. Brown

External organisations

  • Loughborough University
  • DSTL

Abstract

Tantalum carbide samples have been subjected to high-temperature testing at ∼2300°C using an oxyacetylene torch to evaluate their potential for ultra-high temperature applications. While large samples cracked during the rapid heating, indicating their inability to withstand thermal shock, small samples survived the severe test conditions. The oxidation products formed were characterized and found to comprise different phases of Ta2O5. The ultra-high temperature experienced by the samples resulted in the formation of many interesting microstructures, including the formation of submicron sized grains, which has not been reported previously in the literature, as well as the expected evidence of melting.

Details

Original languageEnglish
Pages (from-to)122-129
Number of pages8
JournalJournal of Microscopy
Volume250
Issue number2
Early online date12 Mar 2013
Publication statusPublished - May 2013

Keywords

  • Oxyacetylene, Tantalum carbide, Ultra-high temperature