Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5440264 | Journal of the European Ceramic Society | 2017 | 13 Pages |
Abstract
The ablation/oxidation resistance of a carbon fibre (Cf)/carbon matrix (C)-SiC-TiC-TaC ceramic matrix composite (CMC) produced by melt infiltration of alloy into a Cf/C preform and tested in severely oxidising conditions was quantitatively determined and discussed. An oxyacetylene flame shot of 7.5Â s (4Â MW/m2 nominal heat flux), as well as oxidising conditions imposed by a radiant furnace in air at 1873Â K up to 480Â s were the selected testing conditions. Detailed post-test microstructure investigations of the oxidised/ablated infiltrated CMC samples, compared to unprotected CMCs tested in nominally identical conditions, enabled to establish an increase in ablation/oxidation resistance of one order of magnitude. The occurrence of a self-generating protective high-temperature glass-ceramic, disclosed by microstructure analyses, played a substantial role for that performance jump during oxidation/ablation. The Cf/C-SiC-TiC-TaC composite herein tested can be a valuable candidate for uses in severe aerospace applications (propulsion and hypersonic flight).
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Phylis Makurunje, Frédéric Monteverde, Iakovos Sigalas,