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Research Article | Open Access | Just Accepted

Heat dissipation of carbon shell in ZrC–SiC/TaC coating to improve protective ability against ultrahigh temperature ablation

Yuyu ZhangaXuemeng ZhangaHongkang OuaBozhe WangbJia Suna( )Qiangang Fua( )

a Science and Technology on Thermostructural Composite Materials Laboratory, Shaanxi Key Laboratory of Fiber Reinforced Light-Weight Composites, Northwestern Polytechnical University, Xi’an 710072, China

b System Design Institute of Hubei Aerospace Technology Academy, Wuhan 430040, China

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Abstract

To efficiently decrease the ablation heat accumulation and improve the ablation protective ability of ZrC-SiC/TaC coating on carbon/carbon composites, a thermally conductive nano-network with ceramic@carbon core-shell structure was designed and constructed. Polymer-derived SiC/TaC with graphene carbon shell was synthesized and introduced into ZrC coating by supersonic atmospheric plasma spraying. Graphene shell paths were benefitted in increasing the heat transfer capability by lowering the surface temperature of about 200 °C during oxyacetylene ablation. The heat dissipation of the graphene shell in 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 to improve the ablation resistance of the coatings by incorporating carbon nanomaterials with a function of heat dissipation.

Journal of Advanced Ceramics
Cite this article:
Zhang Y, Zhang X, Ou H, et al. Heat dissipation of carbon shell in ZrC–SiC/TaC coating to improve protective ability against ultrahigh temperature ablation. Journal of Advanced Ceramics, 2024, https://doi.org/10.26599/JAC.2024.9220921

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Received: 25 February 2024
Revised: 31 May 2024
Accepted: 03 June 2024
Available online: 04 June 2024

© The author(s) 2024

The articles published in this open access journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).

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