| SiC界面涂层对碳纤维针刺毡增强Al2O3复合材料力学性能的影响(英文) |
| |
| 引用本文： | 曾宽宏,马青松,顾星宇. SiC界面涂层对碳纤维针刺毡增强Al2O3复合材料力学性能的影响(英文)[J]. 中国有色金属学会会刊, 2020, 30(2): 463-471. DOI: 10.1016/S1003-6326(20)65226-8 |
| |
| 作者姓名： | 曾宽宏 马青松 顾星宇 |
| |
| 作者单位： | 国防科技大学新型陶瓷纤维及其复合材料重点实验室 |
| |
| 摘 要： | 分别采用3D碳纤维针刺毡为增强体以及聚碳硅烷(PCS)衍生SiC涂层为界面相,通过溶胶-浸渍-干燥-热处理(SIDH)技术制备C/Al2O3复合材料,研究SiC界面涂层对C/Al2O3复合材料力学性能、抗氧化性能和抗热震性能的影响。结果表明,C/Al2O3复合材料的断裂韧性显著优于Al2O3单体陶瓷,引入SiC界面涂层后,尽管断裂功有一定程度下降,但C/Al2O3复合材料的强度得到明显提高;得益于SiC涂层和C纤维之间的强结合,C/SiC/Al2O3复合材料在静态空气中表现出明显优于C/Al2O3复合材料的抗氧化和抗热震性能。
|
| 关 键 词： | 氧化铝 碳纤维增强体 界面涂层 力学性能 抗氧化性能 抗热震性能 |
| 收稿时间： | 2019-07-02 |
Effects of SiC interfacial coating on mechanical properties of carbon fiber needled felt reinforced sol-derived Al2O3 composites |
| |
| Affiliation: | 1. School of Materials Science and Engineering, Central South University, Changsha 410083, China;2. Hunan Provincial Key Laboratory of Electronic Packaging and Advanced Functional Materials, Changsha 410083, China;1. Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, PR China;2. University of Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing 100049, PR China |
| |
| Abstract: | 3D carbon fiber needled felt and polycarbosilane-derived SiC coating were selected as reinforcement and interfacial coating, respectively, and the sol−impregnation−drying−heating (SIDH) route was used to fabricate C/Al2O3 composites. The effects of SiC interfacial coating on the mechanical properties, oxidation resistance and thermal shock resistance of C/Al2O3 composites were investigated. It is found that the fracture toughness of C/Al2O3 composites was remarkably superior to that of monolithic Al2O3 ceramics. The introduction of SiC interfacial coating obviously improved the strengths of C/Al2O3 composites although the fracture work diminished to some extent. Owing to the tight bonding between SiC coating and carbon fiber, the C/SiC/Al2O3 composites showed much better oxidation and thermal shock resistance over C/Al2O3 composites under static air. |
| |
| Keywords: | alumina carbon fiber reinforcement interfacial coating mechanical properties oxidation resistance thermal shock resistance |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
