炭/炭复合材料化学液气相沉积致密化技术研究  

Study on chemical liquid-vaporized infiltration process for preparing carbon/carbon composites

作　　者：王海青[1] 赵建国[1] 张素芳[1] 郭永[1] 

机构地区：[1]大同大学化学系,山西大同037009

出　　处：《现代化工》2007年第z1期304-306,共3页Modern Chemical Industry

摘　　要：介绍了炭/炭复合材料化学液气相沉积工艺的基本原理。化学液气相沉积工艺与热梯度化学气相沉积工艺在本质上是相同的,不同之处是化学液气相沉积用液态烃作前驱体,提高了原料的利用率,加快热解炭沉积的速率。研究了不同沉积温度对炭/炭复合材料微观组织结构的影响。采用偏光显微镜观察了材料的粗糙层、光滑层热解炭微观组织结构。研究发现用环己烷作前驱体当沉积温度为1 100℃时可以得到粗糙层结构的热解炭。The foundamental principle for the preparation of carbon/carbon composites is introduced.The chemical liquid-vapor infiltration technology,by the use of liquid precursor,based on the thermal gradient chemical vapor infiltration has been developed as one of the effective techniques.A higher infiltration rate and a higher efficient utilization ratio of precursors are obtained as compared to that with the traditional thermal gradient chemical vapor infiltration technology.The effect of deposition temperature on the microstructure of pyrocarbon is discussed.The microstructure of pyrocarbon,including the rough laminar,the smooth laminar pyrocarbon,is observed and analyzed by polarized-light microscopy.High-textured carbon/carbon composites with rough laminar pyrocarbon are obtained when deposition temperature is 1 100℃ with cyclohexane as precursors.

关 键 词：炭/炭复合材料 化学液气相沉积 热解炭 微观组织 

分 类 号：TB332[一般工业技术—材料科学与工程]