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- W3174442290 abstract "Ta0.78Hf0.22C solid solution ceramic was synthesized and introduced into carbon/carbon (C/C) composites by polymer infiltration and pyrolysis (PIP). Effect of the introduction of Ta0.78Hf0.22C on the microstructure, ablation resistance, and flexural performance of C/C composites were investigated. Results showed that the flexural strength and modulus of the composites were increased by 108 % and 117 %, respectively, after adding Ta0.78Hf0.22C solid solution into C/C composites. In addition, the introduction of Ta0.78Hf0.22C improved the ablation resistance of C/C composites under oxyacetylene ablation environment, over 2200 °C. The linear and mass ablation rates were decreased 73 % and 70 %, respectively. The oxide with low melting point, Ta2O5, exhibited good sealing and oxygen-barrier capacity, and the formation of new solid solution oxide particles, Hf6Ta2O17, could pin cracks during ablation, both of them were contributed to better ablation resistance of modified C/C composites." @default.
- W3174442290 created "2021-07-05" @default.
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- W3174442290 date "2021-10-01" @default.
- W3174442290 modified "2023-10-14" @default.
- W3174442290 title "Ablation-resistant Ta0.78Hf0.22C solid solution ceramic modified C/C composites for oxidizing environments over 2200 °C" @default.
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- W3174442290 doi "https://doi.org/10.1016/j.jeurceramsoc.2021.06.031" @default.
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