新型炭材料2007，Vol.22Issue(3)：247-252,6.
炭/炭复合材料新型热梯度制备工艺
A novel thermal gradient chemical vapor infiltration process for carbon-carbon composites
Shameel 1Farhan 1李克智 1郭领军2
作者信息
- 1. 西北工业大学材料学院,陕西,西安,710072
- 折叠
摘要
Abstract
Solid cylindrical carbon-carbon composites were processed using conventional thermal gradient chemical cause of the difference in thermal conductivities. The hottest portion (900-1 200 ℃ ) was along the inserted carbon fibers, where the pyrolytic reaction of natural gas occurred. The densification radially moved outwards and ultimately a density of 1. 778 g/cm3 was obtained after67h. The process parameters such as the electric power of the furnace, electrical resistance of the sample, densification time, and the position of the deposition layer were studied. A densified sample having a volume fraction of carbon fibers of 10% was tested for ablation and erosion. The microstructure of the pyrolytic carbon matrix of the as-prepared sample was investigated by polarized light microscopy and scanning electron microscoPY.关键词
炭/炭复合材料/热梯度/化学气相渗透Key words
Carbon-carbon composites/ Thermal gradient/ Chemical vapor infiltration分类
通用工业技术引用本文复制引用
Shameel,Farhan,李克智,郭领军..炭/炭复合材料新型热梯度制备工艺[J].新型炭材料,2007,22(3):247-252,6.
