High temperature ablation behavior of pressureless sintered Ta0.8Hf0.2C-based ultra-high temperature ceramics
文献类型：期刊论文
| 作者 | Zhang, Buhao; Yin, Jie; Zheng, Jiaqi; Liu, Xuejian; Huang, Zhengren; Dusza, Jan; Jiang, Dongliang |
| 刊名 | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
 |
| 出版日期 | 2020 |
| 卷号 | 40期号:4页码:1784-1789 |
| 关键词 | OXIDATION BEHAVIOR HFC TAC DENSIFICATION COMPOSITES CARBIDE |
| DOI | 10.1016/j.jeurceramsoc.2019.11.043 |
| 英文摘要 | Ablation behavior of Ta0.8Hf0.2C and Ta0.6Hf0.2C-10 vol%SiC ceramics was investigated by plasma flame ablation test in air. Linear ablation rate was used for the characterization of ablation resistance and grazing-incidence Xray diffraction (GIXRD), scanning electron microscopy (SEM) and electron backscattered diffraction (EBSD) were used for characterization. Ta0.6Hf0.2C-10 vol%SiC exhibited significantly higher ablation resistance, with ablation rate of 0.7 mu m/sec in comparison to the monolithic system with 3.5 mu m/sec. An unstable single oxide layer of monolithic Ta0.8Hf0.2C with thickness approximately 20 mu m was observed after ablation. Oxidation reactions happened individually as TaC and HfC while 'self-sacrificial' volatilization was mainly controlled by active oxidation of TaC. Hf6Ta2O17 was generated by the combination of HfO2 and TaO. A more stable double reaction-layer was observed after ablation of Ta0.5Hf0.2C-10 vol%SiC ceramic. Passive oxidation of TaC was dominant. Textured Ta2O5 skeleton, filled with Hf-containing TaO6, stopped consumption of SiC and hampered oxygen further diffusion. |
| 学科主题 | Materials Science |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/19838]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Yin, J 2.Huang, ZR (corresponding author), Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhang, Buhao,Yin, Jie,Zheng, Jiaqi,et al. High temperature ablation behavior of pressureless sintered Ta0.8Hf0.2C-based ultra-high temperature ceramics[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2020,40(4):1784-1789. |
| APA | Zhang, Buhao.,Yin, Jie.,Zheng, Jiaqi.,Liu, Xuejian.,Huang, Zhengren.,...&Jiang, Dongliang.(2020).High temperature ablation behavior of pressureless sintered Ta0.8Hf0.2C-based ultra-high temperature ceramics.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,40(4),1784-1789. |
| MLA | Zhang, Buhao,et al."High temperature ablation behavior of pressureless sintered Ta0.8Hf0.2C-based ultra-high temperature ceramics".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 40.4(2020):1784-1789. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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