快速致密C/C复合材料中的热解碳形貌与沉积机理  

Research on Morphology and Deposition Mechanism of Pyrolitic Carbon in Rapid Densifing C/C Composites

作　　者：舒武炳[1] 乔生儒[1] 白世鸿[1] 吕宝桐[1] 李玫[1] 

机构地区：[1]西北工业大学,西安710072

出　　处：《材料工程》2001年第6期7-9,6,共4页Journal of Materials Engineering

摘　　要：采用 X射线衍射 (XRD)和扫描电镜 (SEM)对煤油、汽油、柴油和环已烷四种液烃前驱体的热解碳分析表明 :热解碳的石墨化能力依次为煤油 >柴油 >汽油 >环已烷热解碳。热解碳的沉积按“成核 -增长”机理有序进行 ,碳纤维、碳黑粒子都是有效籽核而促成碳的沉积。WT5BZ]The analytical results for the pyrolytic carbons made from kerosene (Ck),gasoline(Cg),diesel oil(Cd)and cyclohexane(Cc)with XRD shown that the graphitization degree of these pyrolytic carbons was on the sequence of Ck>Cd>Cg>Cc, SEM micrographs indicated that the pyrolytic carbons was orderly aggregated on the mechanism of nucleation growth The carbon fiber and carbon black produced in pyrolyzing precursors were the crystal seeds which promoted the deposition of the pyrolytic carbons

关 键 词：C/C复合材料 快速致密化 碳/碳复合材料 热解碳 液烃 前驱体 

分 类 号：TB332[一般工业技术—材料科学与工程]