文章信息/Info

Title:

Modification and Ablation Behaviors of Ultrahigh Temperature Ceramic Matrix Composites

 

作者:

段劉陽; 羅磊; 王一光 *

Author(s):

Duan Liuyang;  Luo Lei;  Wang Yiguang

Science and Technology on Thermostructural Composite Materials Laboratory, Center，

Northwestern Polytechnical University

關鍵詞:

超高溫陶瓷基復合材料; 涂層改性; 基體改性; 燒蝕

DOI:

10.7502/j.issn.1674-3962.2015.10.03

文獻標志碼:

A

摘要:

高超音速飛行器熱防護系統需要超高溫陶瓷基復合材料，基于C/SiC復合材料的涂層和基體耐高溫、抗燒蝕改性是制備超高溫陶瓷基復合材料的有效方法。本文簡述了C/SiC復合材料的制備方法和燒蝕性能，并在此基礎上綜述了超高溫陶瓷單一組元和多元復合組元對C/SiC復合材料涂層及基體改性的研究進展及其燒蝕行為，指出難熔金屬硼化物和碳化物，如ZrB2、ZrC、TaC、HfC等單一或復合組元可有效提高C/SiC復合材料高溫抗氧化和抗燒蝕性能。針對未來往返飛行器對材料重復燒蝕需求，初步闡述了基于C/SiC復合材料的超高溫陶瓷基復合材料改性方法，并給出了在氧乙炔焰下重復燒蝕結果。

Abstract:

The development of hypersonic vehicles requires ultrahigh temperature ceramic matrix composites (UHTCMCs) for their thermal protection system. The effective way to fabricate the UHTCMCs isto enhance the ablation resistance of coatings and matrix of C/SiC composites. In this paper, we briefly introduced the fabrication of C/SiC composites and their ablation behaviors. The modification of the coatings and matrix of C/SiC composites by adding single- or multi- UHTC components was reviewed, and their ablation behaviors as well. The results indicated that the refractory borides or carbides, such as ZrB2 、 ZrC 、 TaC and HfC were good candidates to enhance the high temperature resistance and the ablation resistance. Base on the requirements of multiple ablation resistance for future reentry vehicles, the modification of UHTCMCs to meet these requirements was also reported. The preliminary results of multiple ablation under oxyacetylenetorch flame was given.