摘要
难熔金属碳化物的加入可有效提高C/C材料的抗烧蚀性能,并成为近年来国内外研究的热点。文章主要介绍了中南大学在难熔金属碳化物TaC改性C/C材料制备技术方面的研究工作,主要包括含有Ta2O5的树脂/沥青浸渍-高温处理原位反应生成TaC的工艺方法、用含有有机Ta的树脂浸渍-高温处理原位反应生成TaC的工艺方法、预制体编织过程中加入TaC制备C/C-TaC的工艺方法、基于化学气相渗透法制备TaC及SiC/TaC中间界面层改性C/C材料的工艺技术以及基于化学气相沉积法制备抗烧蚀TaC及SiC/TaC难熔金属碳化物涂层的工艺技术。
The anti-ablation properties of C/C composites can be improved effectively by the addition of refractory metal carbide,as is widely studied in recent years.This paper reviews recent studies on the modification and coating techniques of C/C composites with TaC that have been carried out in Central South University,including the process of resin /pitch impregnation containing Ta2O5 and in situ reaction under high temperature,the process of resin /pitch impregnation containing tantalum ethoxide and in situ reaction under high temperature,the addition of TaC in the braiding of carbon fiber preforms,TaC and SiC/TaC multi-interlayer modification technique of C/C composites prepared by chemical vapor infiltration,TaC and SiC/TaC refractory metal carbide coating on C/C composites prepared by chemical vapor deposition technique.
出处
《航天器环境工程》
2010年第1期45-49,4,共5页
Spacecraft Environment Engineering
基金
国家自然科学基金项目(50872154
50721003)资助
