| ZrB2改性C/C复合材料微观结构及烧蚀性能的研究（英文） |
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| 引用本文： | 孙慧慧,李贺军,沈学涛,曹高翔,强新发,任晓斌,付前刚.ZrB2改性C/C复合材料微观结构及烧蚀性能的研究（英文）[J].无机材料学报,2011(6):669-672. |
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| 作者姓名： | 孙慧慧 李贺军 沈学涛 曹高翔 强新发 任晓斌 付前刚 |
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| 作者单位： | 西北工业大学凝固技术国家重点实验室; |
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| 基金项目： | National Natural Science Foundation of China(50832004,90716024); the “111” Project(08040) |
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| 摘 要： | 采用超声波真空浸渍-碳热还原法将ZrB2引入碳纤维预置体,结合热梯度化学气相渗透、高温石墨化工艺制备了ZrB2改性C/C复合材料.氧-乙炔烧蚀测试结果表明,添加了6.87 wt%ZrB2后,C/C复合材料的线烧蚀率和质量烧蚀率分别下降了64.9%和67.5%.分析表明,C/C复合材料的烧蚀主要是由热化学和热物理反应控制,机械剥蚀在烧蚀过程中仅起到次要作用.烧蚀产物ZrO2/B2O3在烧蚀过程中的挥发会带走大量的热,从而减少了烧蚀火焰对烧蚀表面的热冲击.
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| 关 键 词： | 烧蚀 ZrB2 C/C复合材料 ZrO2 |
Microstructure and Ablation Behavior of C/C Composites Doped with ZrB_2 |
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| SUN Hui-Hui,LI He-Jun,SHEN Xue-Tao,CAO Gao-Xiang,QIANG Xin-Fa,REN Xiao-Bin,FU Qian-Gang.Microstructure and Ablation Behavior of C/C Composites Doped with ZrB_2[J].Journal of Inorganic Materials,2011(6):669-672. |
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| Authors: | SUN Hui-Hui LI He-Jun SHEN Xue-Tao CAO Gao-Xiang QIANG Xin-Fa REN Xiao-Bin FU Qian-Gang |
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| Affiliation: | (State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an 710072,China) |
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| Abstract: | ZrB2 was first introduced into carbon preforms through ultrasonic and vacuum immersion-carbonthermal reduction method.After densification using thermal gradient chemical vapor infiltration and graphitization,ZrB2 doped C/C composites were prepared.The oxyacetylene ablation results show that the linear and mass ablation rates of the composites after doping with 6.87wt% ZrB2 decreased by 64.9% and 67.5%,respectively.The ablation of C/C com-posites is mainly controlled by thermochemical and thermophysical reac... |
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| Keywords: | ablation ZrB2 C/C composites ZrO2 |
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