材料科学与工程学报2008，Vol.26Issue(1)：12-15,4.
C/SiC-(W-C)复合材料的制备及烧蚀性能
Processing and Ablation Properties of C/SiC-(W-C) Composites
摘要
Abstract
A 3D C/SiC-(W-C) composite was prepared by combining chemical vapor infiltration (CVI) technology with solution impregnation method. The phase composition and microstructure of the composite before and after ablation were investigated by XRD, and SEM, respectively. The ablation properties of as-prepared C/SiC-(W-C) composite were studied.The XRD results show that the main phases of the as-prepared composite are WC, W, SiC and C while those of the ablated surface are WO3, W and SiC. SEM analysis implies that not only inter-bundle pores but also intra-bundle pores are filled by W-C. The as-prepared C/SiC-(W-C) composite attains a density of 3.3 g/cm3 with the apparent porosity of 11%. Its linear and mass ablation rates are 4. 3×10-2mm/s and 7. 2 × 10-3g/s, respectively.关键词
烧蚀/CVI/溶液浸渍/C/SiC-(W-C)复合材料Key words
ablation/CVI/solution impregnation/C/SiC-(W-C) composite分类
航空航天引用本文复制引用
童长青,成来飞,张立同,徐永东..C/SiC-(W-C)复合材料的制备及烧蚀性能[J].材料科学与工程学报,2008,26(1):12-15,4.基金项目
Natural Science Foundation of China (90405015), National Young Elitists Foundation (50245208) （90405015）
