Evaluation of the high temperature performance of HfB 2 UHTC particulate filled C f /C composites

Room and high temperature flexural strength and coefficient of thermal expansion ( CTE ) of HfB 2 ultra‐high temperature ceramic ( UHTC ) particulate filled C f /C composites are determined along with UHT oxidation behavior. Both room and high temperature strength of the composites were found to be...

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Bibliographic Details
Published in:International journal of applied ceramic technology 2017-05, Vol.14 (3), p.344-353
Main Authors: Paul, Anish, Rubio, Virtudes, Binner, Jon, Vaidhyanathan, Bala, Heaton, Andrew, Brown, Peter
Format: Article
Language:English
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Summary:Room and high temperature flexural strength and coefficient of thermal expansion ( CTE ) of HfB 2 ultra‐high temperature ceramic ( UHTC ) particulate filled C f /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.
ISSN:1546-542X
1744-7402
DOI:10.1111/ijac.12659