2-ZrC-SiC涂層。微米-亞微米增強(qiáng)結(jié)構(gòu)由微米級(jí)的碳化硅為骨架，亞微米級(jí)的超高溫陶瓷顆粒（UHTCs）為填充料組成。采用等離子火焰對(duì)復(fù)合材料進(jìn)行了燒蝕試驗(yàn)。結(jié)果表明，在燒蝕過(guò)程中由聚集的碳化硅顆粒和超高溫陶瓷顆粒組成的微米-亞微米增強(qiáng)結(jié)構(gòu)在燒蝕氣流的侵蝕下易于形成較大的缺陷。已形成的較大缺陷容易與缺陷周?chē)牧鸭y相連形成較大的凹坑，從而導(dǎo)致部分涂層脫落，并導(dǎo)致整個(gè)涂層系統(tǒng)失效。;ZrB2-ZrC-SiC coating with micro-submicron reinforced structure was prepared on the C/C composites by vacuum infiltration and reactive melt infiltration. The micro-submicron reinforced structure consisted of micron-sized SiC as the skeleton and submicron-sized ultra-high temperature ceramic particles (UHTCs) as the filler. The ablation resistance of the composites was tested by plasma flame. Results show that during ablation, the micro-submicron reinforced structure composed of concentrated SiC particles and UHTCs is prone to form larger defects under the erosion of ablative airflow. The defects induce ablation gaps that are connected with the surrounding cracks to form larger pits, which cause part of the coating to fall off, and the failure of the whole coating system."/>