Preparation and ablation behavior of solid solution ceramic Ta0·2Zr0·8C–SiC matrix-modified C/C composites under high heat flux
To further enhance the ablation resistance of C/C composites, solid solution ceramic Ta0·2Zr0·8C was used to replace traditional ultra-high-temperature ceramic carbides for matrix modification of C/C composites. The C/C–Ta0.2Zr0·8C–SiC composite was fabricated by a high-solid-loading slurry impregna...
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425000882 |
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| author | Yuanming Zhou Zhenxiao Tang Ruizhi Liu Zhe Zhou Maozhong Yi Ke Peng |
| author_facet | Yuanming Zhou Zhenxiao Tang Ruizhi Liu Zhe Zhou Maozhong Yi Ke Peng |
| author_sort | Yuanming Zhou |
| collection | DOAJ |
| description | To further enhance the ablation resistance of C/C composites, solid solution ceramic Ta0·2Zr0·8C was used to replace traditional ultra-high-temperature ceramic carbides for matrix modification of C/C composites. The C/C–Ta0.2Zr0·8C–SiC composite was fabricated by a high-solid-loading slurry impregnation combined with the precursor infiltration and pyrolysis process. The comparative samples of C/C–ZrC–SiC and C/C–TaC–SiC were also prepared using these same technologies. The microstructure, flexural properties, and ablation performance of the composite were investigated. Results showed that the C/C–Ta0.2Zr0·8C–SiC exhibited excellent overall flexural properties. During the ablation test under an oxyacetylene flame with high heat flux, the ablation resistance of C/C–Ta0.2Zr0·8C–SiC improved with prolonged ablation time, reaching mass and linear ablation rates of 0.67 mg/s and 0.18 μm/s after 120 s of ablation. Compared to the C/C–ZrC–SiC and C/C–TaC–SiC, the mass ablation rate of the composite was reduced by 49.24% and 68.70%, and the linear ablation rate was reduced by 97.22% and 97.71%, respectively. The enhanced ablation resistance was primarily attributed to the formation of the Ta–Zr–O oxide layer, composed of TaZr2·75O8, ZrO2, and Ta2O5, on the composites surface. In the oxide layer, the Ta-rich oxides served as a binder, filling gaps in the interface. Meanwhile, the Zr-rich oxides formed the skeleton that pinned the molten liquid oxides. The combined effects of Ta-rich and Zr-rich oxides made the Ta–Zr–O oxide layer more compact and strongly bonded to the matrix. |
| format | Article |
| id | doaj-art-539b9ecf41b548ab9bbee8aa6f4e54b4 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-539b9ecf41b548ab9bbee8aa6f4e54b42025-01-26T05:03:55ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013518751888Preparation and ablation behavior of solid solution ceramic Ta0·2Zr0·8C–SiC matrix-modified C/C composites under high heat fluxYuanming Zhou0Zhenxiao Tang1Ruizhi Liu2Zhe Zhou3Maozhong Yi4Ke Peng5Powder Metallurgy Research Institute, Central South University, Changsha 410083, ChinaPowder Metallurgy Research Institute, Central South University, Changsha 410083, ChinaPowder Metallurgy Research Institute, Central South University, Changsha 410083, ChinaCollege of Materials Science and Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaPowder Metallurgy Research Institute, Central South University, Changsha 410083, China; Corresponding author.Powder Metallurgy Research Institute, Central South University, Changsha 410083, China; Corresponding author.To further enhance the ablation resistance of C/C composites, solid solution ceramic Ta0·2Zr0·8C was used to replace traditional ultra-high-temperature ceramic carbides for matrix modification of C/C composites. The C/C–Ta0.2Zr0·8C–SiC composite was fabricated by a high-solid-loading slurry impregnation combined with the precursor infiltration and pyrolysis process. The comparative samples of C/C–ZrC–SiC and C/C–TaC–SiC were also prepared using these same technologies. The microstructure, flexural properties, and ablation performance of the composite were investigated. Results showed that the C/C–Ta0.2Zr0·8C–SiC exhibited excellent overall flexural properties. During the ablation test under an oxyacetylene flame with high heat flux, the ablation resistance of C/C–Ta0.2Zr0·8C–SiC improved with prolonged ablation time, reaching mass and linear ablation rates of 0.67 mg/s and 0.18 μm/s after 120 s of ablation. Compared to the C/C–ZrC–SiC and C/C–TaC–SiC, the mass ablation rate of the composite was reduced by 49.24% and 68.70%, and the linear ablation rate was reduced by 97.22% and 97.71%, respectively. The enhanced ablation resistance was primarily attributed to the formation of the Ta–Zr–O oxide layer, composed of TaZr2·75O8, ZrO2, and Ta2O5, on the composites surface. In the oxide layer, the Ta-rich oxides served as a binder, filling gaps in the interface. Meanwhile, the Zr-rich oxides formed the skeleton that pinned the molten liquid oxides. The combined effects of Ta-rich and Zr-rich oxides made the Ta–Zr–O oxide layer more compact and strongly bonded to the matrix.http://www.sciencedirect.com/science/article/pii/S2238785425000882Solid solution ceramicMatrix-modified C/C compositeFlexural propertiesAblation resistance |
| spellingShingle | Yuanming Zhou Zhenxiao Tang Ruizhi Liu Zhe Zhou Maozhong Yi Ke Peng Preparation and ablation behavior of solid solution ceramic Ta0·2Zr0·8C–SiC matrix-modified C/C composites under high heat flux Journal of Materials Research and Technology Solid solution ceramic Matrix-modified C/C composite Flexural properties Ablation resistance |
| title | Preparation and ablation behavior of solid solution ceramic Ta0·2Zr0·8C–SiC matrix-modified C/C composites under high heat flux |
| title_full | Preparation and ablation behavior of solid solution ceramic Ta0·2Zr0·8C–SiC matrix-modified C/C composites under high heat flux |
| title_fullStr | Preparation and ablation behavior of solid solution ceramic Ta0·2Zr0·8C–SiC matrix-modified C/C composites under high heat flux |
| title_full_unstemmed | Preparation and ablation behavior of solid solution ceramic Ta0·2Zr0·8C–SiC matrix-modified C/C composites under high heat flux |
| title_short | Preparation and ablation behavior of solid solution ceramic Ta0·2Zr0·8C–SiC matrix-modified C/C composites under high heat flux |
| title_sort | preparation and ablation behavior of solid solution ceramic ta0·2zr0·8c sic matrix modified c c composites under high heat flux |
| topic | Solid solution ceramic Matrix-modified C/C composite Flexural properties Ablation resistance |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425000882 |
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