催化化学气相渗透法制备C/C复合材料  

Fabrication of C/C composites by catalytic chemical vapor infiltration

作　　者：周振中[1] 李铁虎[1] 艾艳玲[1] 宋发举[1] 林起浪[1] 

机构地区：[1]西北工业大学材料学院,陕西西安710072

出　　处：《新型炭材料》2006年第1期43-47,共5页New Carbon Materials

基　　金：国家自然科学基金资助项目(50472081)。~~

摘　　要：为了提高基体炭的沉积效率和抗氧化性能,采用常规化学气相渗透法催化制备C/C复合材料。研究了Ni/ZSM-5负载型催化剂对热解炭的致密化速率和性能的影响,并借助偏光显微镜(PLM)、扫描电子显微镜(SEM)和X射线衍射法(XRD)表征了热解炭微观结构。结果表明:在添加Ni/ZSM-5的炭布预制体中,热解炭有较快的沉积速率,其微观结构和抗氧化性能均与催化剂有关。Catalytic isothermal chemical vapor infiltration fabrication of carbon/carbon （C/C） composites was investigated by polarized light microscopy, SEM and XRD in order to speed up the deposition efficiency and to enhance the oxidation-resistance of the matrix carbon. The influence of Ni/ZSM-5 supported catalysts on the deposition rate of matrix carbon is investigated by comparing pure C/C composites and C/C composites added with catalytic Ni/ZSM-5 powder. Results show that the pyrocarbon growth rate is faster in carbon fiber cloth sub- strates doped with supported catalysts than in the undoped one. Both the microstructure of the pyrolytic carbon and its oxidation-resistance have a close correlation with the amount of Ni/ZSM-5.

关 键 词：催化化学气相渗透 C/C复合材料 微观结构 Ni/ZSM-5 

分 类 号：TB332[一般工业技术—材料科学与工程]