Evaluation of the high temperature performance of HfB2 UHTC particulate filled Cf/C composites

Research output: Contribution to journalArticlepeer-review

Authors

  • Bala Vaidhyanathan
  • Andrew Heaton
  • Peter Brown

Abstract

Room and high temperature flexural strength and coefficient of thermal expansion (CTE) of HfB2 ultra-high temperature ceramic (UHTC) particulate filled Cf/C composites are determined along with UHT oxidation behavior. Both room and high temperature strength of the composites were found to be broadly comparable to those of other thermal protection system materials currently being investigated. The CTE of the composites was measured both along and perpendicular to the fiber direction up to 1700°C and the values were found to depend on fiber orientation by approximately a factor of 3. Arc-jet testing of the UHTC composites highlighted the excellent ultra-high temperature oxidation performance of these materials.

Details

Original languageEnglish
Pages (from-to)344-353
JournalInternational Journal of Applied Ceramic Technology
Volume14
Issue number3
Early online date11 Feb 2017
Publication statusPublished - 3 May 2017