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Heat dissipation of carbon shell in ZrC–SiC/TaC coating to improve protective ability against ultrahigh temperature ablation
- Source :
- Journal of Advanced Ceramics, Vol 13, Iss 7, Pp 1080-1091 (2024)
- Publication Year :
- 2024
- Publisher :
- Tsinghua University Press, 2024.
-
Abstract
- To efficiently decrease ablation heat accumulation and improve the ability of ZrC–SiC/TaC coatings to protect carbon/carbon (C/C) composites, a thermally conductive nanonetwork with a ceramic@carbon core–shell structure was designed and constructed. Polymer-derived SiC/TaC with a graphene carbon shell was synthesized and introduced into a ZrC coating by supersonic atmospheric plasma spraying (SAPS). Graphene shell paths increased the heat transfer capability by lowering the surface temperature to approximately 200 °C during oxyacetylene ablation. The heat dissipation of the graphene shell in the ZrC–SiC/TaC@C coating reduced the volatilization of low-melting-point phases and delayed the sintering of ZrO2 particles. Thus, the graphene shell in ZrC–SiC/TaC@C coating decreased the mass and linear ablation rates by 91.4% and 93.7% compared to ZrC–SiC/TaC coating, respectively. This work provided a constructive idea for improving the ablation resistance of the coatings by incorporating carbon nanomaterials as a function of heat dissipation.
Details
- Language :
- English
- ISSN :
- 22264108 and 22278508
- Volume :
- 13
- Issue :
- 7
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of Advanced Ceramics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.9f3c9e6d26e04d2bb9d4de399e5ce4bd
- Document Type :
- article
- Full Text :
- https://doi.org/10.26599/JAC.2024.9220921