| 一种制备C/C复合材料的高效等温ICVI工艺 |
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| 引用本文： | 白瑞成,李贺军,徐向阳,熊信柏,李爱军.一种制备C/C复合材料的高效等温ICVI工艺[J].航空学报,2005,26(2):254-256. |
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| 作者姓名： | 白瑞成 李贺军 徐向阳 熊信柏 李爱军 |
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| 作者单位： | 西北工业大学,超高温复合材料重点实验室,陕西,西安,710072 |
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| 基金项目： | 国家杰出青年基金( 52225210 )，国家自然科学基金(50372050)资助项目 |
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| 摘 要： | 将传统的负压等温化学气相渗透(ICVI)工艺加以改进,在常压条件下以丙烯为气态前驱体,氮气为稀释气体,通过定向扩散和控制滞留时间,经 100h沉积后制备出密度为 1 72g/cm3 的 C/C复合材料。该方法克服了传统等温CVI工艺致密化速率较慢的问题,提高了致密化效率,有利于降低C/C复合材料的制备成本。
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| 关 键 词： | 化学气相渗透 C/C复合材料 滞留时间 定向扩散 致密化 |
| 文章编号： | 1000-6893(2005)02-0254-03 |
| 修稿时间： | 2004年2月26日 |
Highly Efficient ICVI Technology for Preparing Carbon/Carbon Composites |
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| BAI Rui-cheng,LI He-jun,XU Xiang-yang,XIONG Xin-bo,LI Ai-jun.Highly Efficient ICVI Technology for Preparing Carbon/Carbon Composites[J].Acta Aeronautica et Astronautica Sinica,2005,26(2):254-256. |
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| Authors: | BAI Rui-cheng LI He-jun XU Xiang-yang XIONG Xin-bo LI Ai-jun |
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| Abstract: | A novel highly efficient ICVI process, which is realized at ambient pressure by using propylene as feeding precursor gas and nitrogen as diluted gas, is developed to improve the tranditional ICVI processes. Adjusting the residence time of the gas mixture inside the reactor, the C/C composite with the bulk density( 1.72g/cm~3) is acquired after 100 h densification via the directional diffusion of gas transport inside the preform. Compared with the traditional ICVI processes, the new technology dramatically shoterns the densification time, indicating an enhanced densification efficiency and further a reduced production cost of C/C composites. |
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| Keywords: | CVI carbon/carbon composite residence time directional diffusion densification |
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