欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以可再生的资源无水乙醇为前驱体，在负压条件下，沉积温度为900℃～1200℃，采用压力梯度CVI工艺制备C／C复合材料。考察了沉积时间与密度的变化规律，采用偏光显微镜和扫描电镜观察了材料的组织结构和断口形貌，利用三点弯曲测定了材料的弯曲强度。结果表明：采用乙醇为前驱体，可大幅度提高致密化效率，96h制备出密度为1．47g／cm^3的C／C复合材料；易于获得高织构的组织，制备试样的热解炭组织以粗糙层为主，断裂方式为假塑性断裂。乙醇是一种很有应用前景的制备C／C复合材料的前驱体。
英文摘要：
Ethanol, which is a renewable resource, was used as a precursor to prepare carbon/carbon （C/C） composites by chemical vapor infiltration （CVI）, and the relationship between density and infiltration time was investigated. The flexural strength was determined by a three-point bend test. The microstructure and fracture- surface morphology of the composites were observed by polarized light microscopy and scanning electron micros- copy respectively. Results show that the bulk density reaches 1.47 g/cm3 for a 96 h densification, a significant improvement in densification efficiency compared with other precursors. A high-textured carbon matrix, consisting of rough laminar pyrocarbon, can be easily obtained. The C/C composites exhibit a pseudo-plastic failure behavior. Ethanol is a new promising precursor for the densification of C/C composites.
同期刊论文项目
同项目期刊论文
Fabrication of Isotropic Pyrocarbon at 1400℃ by Thermal Gradient Chemical Vapor Deposition Apparatus
Carbon nanotube-templated copper phthalocyanine derivative assemblies via solid-phase synthesis: eff
Microstructure and anti-oxidation properties of multi-composition ceramic coatings for carbon/carbon
A Si-SiC oxidation protective coating for carbon/carbon composites prepared by a two-step pack cemen
Oxidation protection of carbon/carbon composites with SiC/indialite coating for intermediate tempera
Finite element simulation of the effects of process parameters on deposition uniformity of chemical-
Effect of thermal shock and oxidation on mechanical property of carbon/carbon composites with a sili
Finite element simulation of effects of process parameters on deposition rate of SiC by chemical vap
Oxidation protective C/SiC/Si-SiC multilayer coating for carbon/carbon composites applying at 1873 K
期刊信息
位置：