| 单柏荣,马青松,曾宽宏.C/YAG复合材料的抗烧蚀性能研究[J].装备环境工程,2019,16(10):27-31. SHAN Bo-rong,MA Qing-song,ZENG Kuan-hong.Anti-ablation Properties of C/YAG Composite[J].Equipment Environmental Engineering,2019,16(10):27-31. |
| C/YAG复合材料的抗烧蚀性能研究 |
| Anti-ablation Properties of C/YAG Composite |
| 投稿时间：2019-03-15 修订日期：2019-04-18 |
| DOI：10.7643/issn.1672-9242.2019.10.005 |
| 中文关键词: 钇铝石榴石 碳纤维针刺毡 抗烧蚀性能 |
| 英文关键词:yttrium aluminum garnet carbon fiber needled felt anti-ablation property |
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| Author | Institution |
| SHAN Bo-rong | a. College of Aerospace Science and Engineering, b. Key Laboratory of Advanced Ceramic Fibers & Composites, National University of Defense Technology, Changsha, 410073, China |
| MA Qing-song | a. College of Aerospace Science and Engineering, b. Key Laboratory of Advanced Ceramic Fibers & Composites, National University of Defense Technology, Changsha, 410073, China |
| ZENG Kuan-hong | a. College of Aerospace Science and Engineering, b. Key Laboratory of Advanced Ceramic Fibers & Composites, National University of Defense Technology, Changsha, 410073, China |
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| 中文摘要: |
| 目的 对C/YAG复合材料的烧蚀性能和烧蚀机理进行研究。方法 以高固相含量Y2O3-Al2O3溶胶为原料，低成本的碳纤维针刺毡为增强体，通过浸渍-干燥-热处理工艺制备C/YAG复合材料，利用SEM和XRD对烧蚀后材料的微观结构和物相组成进行分析。结果 复合材料的质量烧蚀率和线烧蚀率分别为0.05 g/s和0.12 mm/s。结论 C/YAG复合材料高的质量烧蚀率和线烧蚀率主要归因于氧乙炔焰高热流和强剪切力作用。烧蚀后材料的微观形貌可以分为中心区、过渡区和边缘区三个区域。其中烧蚀中心区主要受到热化学腐蚀和机械剥蚀的作用，而过渡区和边缘区主要受到热化学腐蚀和热物理侵蚀的作用。 |
| 英文摘要: |
| Objective To investigate theablation properties and mechanism of C/YAG composite Methods The composite was prepared through impregnation-drying-heat treatment route with Y2O3-Al2O3 sols of high solid content as precursor and low-cost 3D carbon fiber needled felt as reinforcement. The composition and microstructure of the ablated sample were characterized with XRD and SEM, respectively. Results The linear and mass ablation rate of C/YAG composites were 0.05 g/s and 0.12 mm/s, respectively. Conclusion The high linear and mass ablation rate of C/YAG composites are mainly ascribed to the powerful shearing scouring of oxyacetylene torch in high heat flux. The microstructure of the ablated sample can be divided into three regions which are center region, transition region and border region. Thermo-chemical erosion and mechanical erosion are the main ablation behaviors in the center region; while thermo-chemical erosion and thermo-physical erosion are the main ablation behaviors in the transition region and the border region. |
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