Effect of nanofibers at surface of carbon fibers on microstructure of carbon/carbon composites during chemical vapor infiltration  

作　　者：肖鹏 陈洁 徐先锋 卢雪峰 

机构地区：[1]State Key Laboratory of Powder Metallurgy (Central South University)

出　　处：《Journal of Central South University》2014年第7期2590-2595,共6页中南大学学报（英文版）

基　　金：Project(12JJ6051) supported by the Natural Science Foundation of Hunan Province,China;Project(2011CB605806) supported by the National Basic Research Program of China

摘　　要：Before densification by chemical vapor infiltration,carbon or SiC nanofibers were grown on the surface of carbon fibers by catalytic chemical vapor deposition using electroplated Ni as catalyst.The modification and mechanism of nanofibers on the pyrocarbon deposition during chemical vapor infiltration were investigated.The results show that the nanofibers improve the surface activity of the carbon fibers and become active nucleation centers during chemical vapor infiltration.They can induce the ordered deposition of pyrocarbon and adjust the interface bonding between pyrocarbon and carbon fibers during the infiltration.Before densification by chemical vapor infiltration,carbon or SiC nanofibers were grown on the surface of carbon fibers by catalytic chemical vapor deposition using electroplated Ni as catalyst.The modification and mechanism of nanofibers on the pyrocarbon deposition during chemical vapor infiltration were investigated.The results show that the nanofibers improve the surface activity of the carbon fibers and become active nucleation centers during chemical vapor infiltration.They can induce the ordered deposition of pyrocarbon and adjust the interface bonding between pyrocarbon and carbon fibers during the infiltration.

关 键 词：carbon nanofiber SiC nanofiber PYROCARBON interface bonding 

分 类 号：TB332[一般工业技术—材料科学与工程] TB383