Ceramic Nanocomposites Reinforced with a High Volume Fraction of Carbon Nanotubes  

作　　者：杨坤 CHENG Laifei AN Linan SHAO Gang 

机构地区：[1]Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University [2]Advanced Materials Processing and Analysis Center and Department of Mechanical, Materials and Aerospace Engineering,University of Central Florida

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2017年第1期47-50,共4页武汉理工大学学报（材料科学英文版）

摘　　要：Multi-walled carbon nanotubes（MWNTs） were incorporated into precursor-derived ceramics made from a polysilazane.A ceramic nanocomposite reinforced with about 35 vol%of carbon nanotubes（CNTs）was fabricated by infiltrating CNT-preform with liquid-phased polymeric precursor followed by pyrolysis.The nanocomposite has a dense structure without micro-cracks.The results reveal that the nanocomposite has lower indentation hardness but higher fracture energy than non-reinforced ceramic from the microindentation tests results.The effect of the CNTs on the mechanical properties of the nanocomposite should be discussed accordingly.Multi-walled carbon nanotubes（MWNTs） were incorporated into precursor-derived ceramics made from a polysilazane.A ceramic nanocomposite reinforced with about 35 vol%of carbon nanotubes（CNTs）was fabricated by infiltrating CNT-preform with liquid-phased polymeric precursor followed by pyrolysis.The nanocomposite has a dense structure without micro-cracks.The results reveal that the nanocomposite has lower indentation hardness but higher fracture energy than non-reinforced ceramic from the microindentation tests results.The effect of the CNTs on the mechanical properties of the nanocomposite should be discussed accordingly.

关 键 词：carbon nanotubes MICROINDENTATION polymer-derived ceramic SICN 

分 类 号：TQ174.758.2[化学工程—陶瓷工业]