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Cyclic Oxidation and Ablation Behavior of ZrC-HfC-TaC Modified C/SiC Composites
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Aerospace Institute of Advanced Materials and Processing Technology, Beijing 100074, China

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National Natural Science Foundation of China (22102165)

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    Abstract:

    Refractory metal carbides have been widely proven to be an effective strategy to enhance the oxidation resistance of ceramic matrix composites. The modification effect of ZrC-HfC-TaC system on cyclic oxidation and ablation behavior has rarely been explored. Herein, ZrC-HfC-TaC modified C/SiC composites were fabricated by polymer infiltration and pyrolysis and chemical vapor deposition processes. The mechanical strength, chemical composition and microstructure after cyclic static oxidation test under 1600 °C/5 h were investigated, and the corresponding oxidation mechanism was proposed according to the characterization results. The cyclic oxyacetylene torch tests under 1700 °C/4000 s were also employed to verify the effectiveness of ZrC-HfC-TaC modification on C/SiC composites. Results suggest that ZrC-HfC-TaC modified C/SiC composites possess outstanding cyclic oxidation and ablation behavior.

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[Chen Haoran, Liu Wei, Sun Yanan, Feng Shijie, Yang Tong, Yang Liangwei, Zhang Baopeng, Song Huanjun, Sun Tongchen. Cyclic Oxidation and Ablation Behavior of ZrC-HfC-TaC Modified C/SiC Composites[J]. Rare Metal Materials and Engineering,2022,51(12):4429~4435.]
DOI:10.12442/j. issn.1002-185X.20220009

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History
  • Received:January 05,2022
  • Revised:December 03,2022
  • Adopted:March 07,2022
  • Online: January 11,2023
  • Published: December 30,2022