Microstructure and ablation properties of C/C-Zr-Si-O composites prepared by carbothermal reduction of hydrothermal co-deposited oxides
C/C-Zr-Si-O composites were prepared by carbothermal reduction of hydrothermal co-deposited ZrO2, SiO2, and C. The bulk density of composites reached 1.71 g/cm3 with 8 cycles of co-deposition. The matrix of the composites includes ZrC, SiC, ZrO2, and SiO2 with fine grain size (300–500 nm) and homoge...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-12-01
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| Series: | Materials & Design |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127518306683 |
| _version_ | 1819105142389080064 |
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| author | Haibo Ouyang Guibiao Li Cuiyan Li Jianfeng Huang Jie Fei Jing Lu |
| author_facet | Haibo Ouyang Guibiao Li Cuiyan Li Jianfeng Huang Jie Fei Jing Lu |
| author_sort | Haibo Ouyang |
| collection | DOAJ |
| description | C/C-Zr-Si-O composites were prepared by carbothermal reduction of hydrothermal co-deposited ZrO2, SiO2, and C. The bulk density of composites reached 1.71 g/cm3 with 8 cycles of co-deposition. The matrix of the composites includes ZrC, SiC, ZrO2, and SiO2 with fine grain size (300–500 nm) and homogeneous distribution. The mass and linear ablation rate of C/C-Zr-Si-O composites were 0.112 mg/cm2·s and 0.46 μm/s, respectively, under a plasma flame for 120 s. The attractive ablation resistance of the composites resulted from its unique structure, which tends to form a continuous ZrO2-SiO2 glass layer in the ablation center, a layer of SiO2-ZrO2 bubbles in the transition region, and fluffy SiO2 nanowires layer in the heat-affected region. These ablation layers were barriers to restrain the diffusion of oxidative gas and heat. The C/C-Zr-Si-O composites provide an alternative ceramics system with attractive ablation resistance, while carbothermal reduction of hydrothermal co-deposited oxides is a feasible method for the structural design of carbon fiber reinforced ultra-high temperature ceramic. Keywords: Ultra-high temperature ceramic composites, Hydrothermal synthesis, Carbothermal reduction, Microstructure, Ablation resistance |
| first_indexed | 2024-12-22T02:17:33Z |
| format | Article |
| id | doaj.art-255d0c76d8224834b91b3c4b665ee370 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-22T02:17:33Z |
| publishDate | 2018-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-255d0c76d8224834b91b3c4b665ee3702022-12-21T18:42:13ZengElsevierMaterials & Design0264-12752018-12-01159145154Microstructure and ablation properties of C/C-Zr-Si-O composites prepared by carbothermal reduction of hydrothermal co-deposited oxidesHaibo Ouyang0Guibiao Li1Cuiyan Li2Jianfeng Huang3Jie Fei4Jing Lu5Corresponding authors.; School of Materials Science & Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, ChinaSchool of Materials Science & Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, ChinaCorresponding authors.; School of Materials Science & Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, ChinaSchool of Materials Science & Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, ChinaSchool of Materials Science & Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, ChinaSchool of Materials Science & Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, ChinaC/C-Zr-Si-O composites were prepared by carbothermal reduction of hydrothermal co-deposited ZrO2, SiO2, and C. The bulk density of composites reached 1.71 g/cm3 with 8 cycles of co-deposition. The matrix of the composites includes ZrC, SiC, ZrO2, and SiO2 with fine grain size (300–500 nm) and homogeneous distribution. The mass and linear ablation rate of C/C-Zr-Si-O composites were 0.112 mg/cm2·s and 0.46 μm/s, respectively, under a plasma flame for 120 s. The attractive ablation resistance of the composites resulted from its unique structure, which tends to form a continuous ZrO2-SiO2 glass layer in the ablation center, a layer of SiO2-ZrO2 bubbles in the transition region, and fluffy SiO2 nanowires layer in the heat-affected region. These ablation layers were barriers to restrain the diffusion of oxidative gas and heat. The C/C-Zr-Si-O composites provide an alternative ceramics system with attractive ablation resistance, while carbothermal reduction of hydrothermal co-deposited oxides is a feasible method for the structural design of carbon fiber reinforced ultra-high temperature ceramic. Keywords: Ultra-high temperature ceramic composites, Hydrothermal synthesis, Carbothermal reduction, Microstructure, Ablation resistancehttp://www.sciencedirect.com/science/article/pii/S0264127518306683 |
| spellingShingle | Haibo Ouyang Guibiao Li Cuiyan Li Jianfeng Huang Jie Fei Jing Lu Microstructure and ablation properties of C/C-Zr-Si-O composites prepared by carbothermal reduction of hydrothermal co-deposited oxides Materials & Design |
| title | Microstructure and ablation properties of C/C-Zr-Si-O composites prepared by carbothermal reduction of hydrothermal co-deposited oxides |
| title_full | Microstructure and ablation properties of C/C-Zr-Si-O composites prepared by carbothermal reduction of hydrothermal co-deposited oxides |
| title_fullStr | Microstructure and ablation properties of C/C-Zr-Si-O composites prepared by carbothermal reduction of hydrothermal co-deposited oxides |
| title_full_unstemmed | Microstructure and ablation properties of C/C-Zr-Si-O composites prepared by carbothermal reduction of hydrothermal co-deposited oxides |
| title_short | Microstructure and ablation properties of C/C-Zr-Si-O composites prepared by carbothermal reduction of hydrothermal co-deposited oxides |
| title_sort | microstructure and ablation properties of c c zr si o composites prepared by carbothermal reduction of hydrothermal co deposited oxides |
| url | http://www.sciencedirect.com/science/article/pii/S0264127518306683 |
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