| TiC—TiB2／Cu复合材料的抗热震及抗烧蚀行为研究 |
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| 引用本文： | 朱春城,李垚,赫晓东,张幸红,韩杰才.TiC—TiB2／Cu复合材料的抗热震及抗烧蚀行为研究[J].航空材料学报,2003,23(3):15-19. |
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| 作者姓名： | 朱春城 李垚 赫晓东 张幸红 韩杰才 |
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| 作者单位： | 哈尔滨工业大学复合材料研究所,黑龙江,哈尔滨,150001 |
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| 基金项目： | 黑龙江省杰出青年科学基金(JC-02-13) |
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| 摘 要： | 采用SHS/PHIP工艺制备了TiC-TiB2/xCu复合材料,分析了材料的组成及显微结构,利用等离子火炬加热器考察了材料的抗热震及抗烧蚀性能.结果表明,随着金属Cu含量的增加,TiC-TiB2/xCu复合材料的抗热震性增强,而抗烧蚀性能降低;在经过15s烧蚀后,材料的质量损失为1.7g,质量烧蚀率为0.11g/s.材料的抗烧蚀机理为耐高温、耐冲刷的高强度陶瓷骨架以及高温下挥发吸热的金属Cu粘接剂,二者的综合作用使材料具有抗烧蚀性.
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| 关 键 词： | TiC-TiB2/xCu复合材料 抗热震性能 抗烧蚀性能 |
| 文章编号： | 1005-5053(2003)03-0015-05 |
| 修稿时间： | 2003年2月28日 |
Study on the behavior in thermal shock and ablation resistance of TiC-TiB2/Cu ceramic-matrix composite |
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| ZHU Chun-cheng,LI Yao,HE Xiao-dong,ZHANG Xing-hong,HAN Jie-cai.Study on the behavior in thermal shock and ablation resistance of TiC-TiB2/Cu ceramic-matrix composite[J].Journal of Aeronautical Materials,2003,23(3):15-19. |
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| Authors: | ZHU Chun-cheng LI Yao HE Xiao-dong ZHANG Xing-hong HAN Jie-cai |
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| Abstract: | The TiC-TiB2/xCu ceramic-matrix composites were produced by self-propagating high-temperature combustion synthesis combined with pseudo hot isostatic pressing(SHS/PHIP). The microstructure and the components of the synthesized compacts were analyzed. To investigate their behaviors of ablation resistance, the TiC-TiB2/xCu cermets were heated with plasma torch. The results showed that along with increase of the Cu content,the thermal shock resistance of the TiC-TiB2/xCu was enhanced, but the ablation resistance was descended. The loss mass of the cermet after ablation for 20 seconds was 1. 7g and the mass loss ratio was 0. 11g/s. The ablation resistance was obtained due to the combined action of both the high strength cermet with the durability to erosion and high temperature and the metal binder, Cu, performing decalescence and volatilization at high temperature. |
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| Keywords: | TiC-TiB2/xCu composites ablation resistance properties thermal shock resistance properties |
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