Effect of PyC interface phase on the cyclic ablation resistance and flexural properties of two-dimensional Cf/HfC composites |
| |
Authors: | Tao Feng Mingde Tong Shuotian Yao Hejun Li Shifeng Wen Hongjiao Lin |
| |
Affiliation: | 1. School of Mechanics, Civil Engineering & Architecture, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, PR China;2. State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, PR China |
| |
Abstract: | Composites based on hafnium carbide and reinforced with continuous naked carbon fiber with and without PyC interface were prepared at low temperature by precursor infiltration and pyrolysis and chemical vapor deposition method. The microstructure, mechanical property, cyclic ablation and fiber bundle push-in tests of the composites were investigated. The results show that after three times ablation cycles, the bending strength of samples without PyC interface decreased by 63.6 %; the bending strength of samples with PyC interface only decreased by 37.8 %. The force displacement curve of the samples with PyC interface presented a well pseudoplastic deformation state. The mechanical behavior difference of two kinds of composites was due to crucial function of PyC interface phase including protection of fiber and weakening of fiber/matrix interface. |
| |
Keywords: | Ablation Composites Interface Bending Strength |
本文献已被 ScienceDirect 等数据库收录! |
|