C/C-SiC composite fabricated by chemical vapor infiltration combined with reactive melt infiltration
A low cost C/C-SiC composite was prepared by chemical vapor infiltration combined with reactive melt infiltration. Carbon fiber felt was firstly densified by pyrolytic carbon using chemical vapor infiltration to obtain a porous C/C preform. The silicon melt was then infiltrated into the porous preform at 1500℃ under a very low pressure up to 4×10-2 Pa to prepare the C/C-SiC composite. The as-received C/C-SiC composite was composed of C, SiC and Si phase. The flexural strength of the as-received C/C-SiC composite is 253 MPa, which is much higher than that of the C/C preform, 65.5MPa.
C/C-SiC reactive melt infiltration microstructure mechanical properties
Yonggang Tong Shuxin Bai Hong Zhang Yicong Ye
College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha, 410073, PR China
国际会议
北京
英文
923-926
2012-10-23（万方平台首次上网日期，不代表论文的发表时间）