| SiC/C功能梯度材料的制备 |
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| 引用本文： | 曹文斌,武安华,李江涛,葛昌纯.SiC/C功能梯度材料的制备[J].北京科技大学学报,2001,23(1):32-34. |
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| 作者姓名： | 曹文斌 武安华 李江涛 葛昌纯 |
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| 作者单位： | 北京科技大学特种陶瓷研究室，北京100083 |
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| 基金项目： | 国家高技术研究发展计划(863计划);863-715-0230; |
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| 摘 要： | 以经典无限大叠板理论和热弹性力学为基础，通过自选开发的计算机辅助设计系统对SiC/C FGM中的热应力分布进行了理论分析，得到制备SiC/C的功能梯度材料最佳工艺参数，采用热压烧结工艺，在1950℃，25MPa和保温1h的条件下制备出了F4和F7两种无宏观缺陷的块体SiC/C功能梯度材料，采用SEM对FGM微观结构进行了观察。500℃室温淬水实验表明，按最佳参数制备的功能梯度材料F7具有良好的抗热震性能。
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| 关 键 词： | 功能梯度材料 碳化硅／碳 热压烧结工艺 制备 热应力分布 微观结构 抗热震性能 |
| 修稿时间： | 2000年6月29日 |
Fabrication of SiC/C Functionally Graded Material |
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| CAO Wenbin,Wu Anhua,Li Jiangtao,Ge Changchun.Fabrication of SiC/C Functionally Graded Material[J].Journal of University of Science and Technology Beijing,2001,23(1):32-34. |
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| Authors: | CAO Wenbin Wu Anhua Li Jiangtao Ge Changchun |
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| Abstract: | The thermal stress in SiC/C FGM in steady temperature field was analyzed based on the classical lamination theory and thermo-elastic mechanics. The optimum composition distribution parameters for fabricating SiC/C FGM were obtained through the above analysis. SiC/C FGM F4 and F7 were fabricated successfully by hot pressing. The microstructure was observed by SEM. Thermal shock resistance of SiC/C FGM was repeatedly tested by quenching from 500 ℃ into water with room temperature. It has been proved that FGM F7, which was fabricated with the optimized parameters, has better thermal shock resistance. |
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| Keywords: | SiC/C functionally graded material thermal stress relaxation |
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