C/C-SiC-ZrB_(2)-ZrC复合材料在等离子体高频脉冲达2000次过程中的烧蚀特性  

High-frequent pulsing ablation of C/C-SiC-ZrB_(2)-ZrC composite for different cycles to 2000 times in plasma

作　　者：冯薇 张妍 刘磊 李博岩 张佳平[2] 陈曦 何子博[1] 唐成伟 张海军 韩秦鑫 Wei FENG;Yan ZHANG;Lei LIU;Bo-yan LI;Jia-ping ZHANG;Xi CHEN;Zi-bo HE;Cheng-wei TANG;Hai-jun ZHANG;Qin-xin HAN(School of Materials and Chemical Engineering,Xi’an Technological University,Xi’an 710021,China;State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an 710072,China;Xi’an Rare Metal Materials Institute Co.,Ltd.,Xi’an 710072,China)

机构地区：[1]西安工业大学材料与化工学院,西安710021 [2]西北工业大学凝固技术国家重点实验室,西安710072 [3]西安稀有金属材料研究院有限公司,西安710072

出　　处：《Transactions of Nonferrous Metals Society of China》2023年第2期553-562,共10页中国有色金属学报（英文版）

基　　金：the financial supports from the National Natural Science Foundation of China(No.51902239);the Natural Science Foundation of Shaanxi Province,China(No.2020JQ-808);the National Innovation and Entrepreneurship Training Program for College Students,China(No.202110702040)。

摘　　要：研究等离子体单次毫秒级加载条件下C/C-SiC-ZrB_(2)-ZrC复合材料在不同次数高频脉冲过程中的烧蚀行为与机理。烧蚀试验在自研台架上进行,测试过程中等离体子体-空气射流交替冲击试样表面。结果表明,随冲击次数增加,前1000次内烧蚀率迅速下降,随后在达2000次过程中烧蚀率缓慢降低。微结构、物相及烧蚀表面温度特征说明烧蚀试样表面形成一层不完整的混合陶瓷烧蚀产物层,且裸露的碳含量在1000次冲击烧蚀以后趋于稳定。烧蚀产物层削弱了热应力诱发的机械剥蚀并保护其亚层的碳不被侵蚀,进而导致烧蚀率的演变。The high-frequent pulsing ablation of C/C-SiC-ZrB_(2)-ZrC composites under millisecond-scaled single loading for different cycles was studied.The sample was ablated and cooled by plasma and airflow alternately on a self-developed bench.Results indicated that the ablation rates decreased quickly before 1000 cycles and then declined gradually until impact for 2000 cycles.Microstructure,phase and surface temperature analyses suggested that an incomplete layer of mixed ceramic ablation product was formed on the surfaces of the tested composites and the amount of the bare carbon tended to be steady after 1000 cycles.The ablation product layer weakened the thermal stress-induced mechanical erosion and protected the carbon from erosion,which led to the evolution of ablation rates.

关 键 词：往复烧蚀 脉冲烧蚀 C/C复合材料 SiC-ZrB_(2)-ZrC 循环次数 

分 类 号：TB332[一般工业技术—材料科学与工程]