摘要
将3组不同纤维体积分数的整体毡采用等温CVD进行沉积热解炭增密,结合CVD沉积过程中整体毡内气体传质数学模型,研究了整体毡的纤维体积分数对CVD增密过程的影响,研究结果表明:纤维体积低的整体毡沉积时增重率高;纤维体积分数高的整体毡容易获得较高密度的C/C复合材料;纤维体积分数超过35％的整体毡经过300 h的化学气相沉积,坯体的体积密度能达到1.52 g/cm^3。
Based on three group of integer felts with different fiber volume content were densified with CVD pyrolytic carbon, and a model of gas transport within a integer felt on the course of CVD process, the effect of carbon fiber volume content on the densification course of CVD (chemical vapor deposition) was investigated. The results indicate that, the faster relative mass gain rate, the lower the carbon fiber volume fraction; the integer felt with higher fiber volume fraction can be prone to obtain higher density C/C composites. After 300 h deposited, the integer felt with 35％ fiber volume can be achieved 1.52 g/cm^3.
出处
《粉末冶金材料科学与工程》
EI
2003年第1期93-96,共4页
Materials Science and Engineering of Powder Metallurgy
基金
国家重点工业试验资助项目(计高技[1998]-1819)
关键词
整体毡
纤维体积分数
CVD
增重率
integer felt
fiber volume content
chemical vapor deposition
relative mass gain rate
