首页 | 本学科首页   官方微博 | 高级检索  
     


Novel one-step formed composite reinforcement of "Spider web like" SiCnw networks and "Z-pins like" SiC rods for ablation resistance improvement of C/C-ZrC-SiC
Affiliation:1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China;2. National Key Laboratory of Science and Technology for High-strength Structural Materials, Central South University, Changsha, 410083, China;3. General Design Department of Beijing Mechanical and Electrical Engineering, Beijing, 100089, China;1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;2. Advanced Research Center, Central South University, Changsha 410083, China;1. School of Materials Science & Engineering, Chang''an University, Xi''an, 710061, China;2. Carbon/Carbon Composites Research Center, Northwestern Polytechnical University, Xi''an, 710072, China;3. Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi''an, 710072, Shaanxi, China;1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;2. Science and Technology of Advanced Functional Composite Laboratory, Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China;3. Advanced Research Center, Central South University, Changsha 410083, China;1. School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing, 400074, China;2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, 710072, China
Abstract:A novel composite reinforcement with horizontal multilayer "Spider web like" SiC nanowire networks and vertical interconnected "Z-pins like" SiC rods was designed and prepared by facile one-step figuration. The linear ablation rate of "Spider web like" SiC nanowire networks and "Z-pins like" SiC rods collectively reinforced C/C-ZrC-SiC composites at 2610 ± 20 ℃ was 0.4 ± 0.03 μm/s with a 74.19 % reduction. The improved ablation resistance was attributed to a denser gradient oxide layer composed of central ZrO2 layer, transitional ZrO2-SiO2 layer and marginal SiO2 layer generated under the initial sticky net effect from SiCnw networks and subsequent oxide compensation from "Z-pins like" SiC rods.
Keywords:SiC nanowire networks  'Z-pins like' SiC rods  Ablation resistance  Oxide compensation
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号