摘要
在碳纳米管的辅助下制备含锆沥青,利用扫描电镜（SEM）、X射线衍射（XRD）、X射线光电子能谱（XPS）、热重分析（TG）等方法对含锆沥青及其碳化产物进行分析,利用液相浸渍法制备C/C复合材料,并对其进行动态烧蚀实验。结果表明：含锆碳基体内部均匀分布纳米陶瓷微球堆积成的陶瓷层,主要成分为t-ZrO2;陶瓷相提升了含锆碳基体的抗烧蚀能力;C/C复合材料基体中的陶瓷相在烧蚀过程中烧结为陶瓷层,有效提高了材料的抗烧蚀性能。
Zirconium-containing pitch was prepared with the assist of carbon nanotube. The zirconium-containing pitch and its carbonization products were analyzed by means of scanning electron microscopy（ SEM）,X-ray diffraction（ XRD）,X-ray photoelectron spectroscopy（ XPS） and thermogravimetric analysis（ TG）. C/C composites were prepared by liquid phase impregnation method,and dynamic ablation tests were carried out. The results show that the ceramic layer deposited by nano-ceramic microspheres is uniformly distributed inside the Zirconium-containing carbon matrix,and its main component is t-ZrO2,the ceramic phase enhances the ablation resistance of the zirconium containing carbon matrix. The ceramic phase in the C/C composites is sintered as a ceramic layer during the ablation process,which effectively improves the ablation resistance of the material.
作者
刘禺
赵东林
迟伟东
刘辉
LIU Yu;ZHAO Dong-lin;CHI Wei-dong;LIU Hui(National Carbon Fiber Engineering Research Center, Beijing University of Chemical Technology, Beijing 100029, China)
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2018年第6期7-13,共7页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(51572012)
关键词
C/C复合材料
二氧化锆
抗烧蚀
C/C composite
zirconium dioxide
ablation resistance
