Influence of the Porosity of C/C on the Characterization of C/C-SiC Composites Prepared by Reactive Melt Infiltration Method
C/C-SiC composites were rapidly fabricated using C/C with four different porosities in the range of 12.4%～45.7% and silicon by reactive-melt-infiltrated (RMI) method. The influence of the C/C porosity on the Si infiltration during the processing and on the microstructure and mechanical properties of the resulting C/C-SiC were investigated. The results show that β-SIC was formed by Si/C reaction and free Si remained in the composites. A higher porosity of C/C leads more Si infiltrating to the preform and produces higher density of C/C-SiC with lower porosity. The flexural strength of the composites was strong influenced by the matrix content and the interface between different phases. C/C-SiC derived from C/C with 24.8% porosity has the highest flexural strength (325.1MPa).
C/C-SiC porosity reactive melt infiltration mechanical property microstructure
Jiping Wang Min Lin Yonghui Zhang Zhuo Xu Zhihao Jin
State Key Laboratory for Mechanical Behavior of Materials, Xian Jiaotong University, Xian 710049, State Key Laboratory for Mechanical Behavior of Materials, Xian Jiaotong University, Xian 710049, Electronic Materials Research Laboratory, School of Electronics and Information Engineering, Xian J
国际会议
10th International Symposium on Eco-Materials Processing and Design(第10届国际生态材料加工与设计研讨会)
西安
英文
371-374
2009-01-13（万方平台首次上网日期，不代表论文的发表时间）