碳纳米管增强镁基复合材料的性能与微观结构  

Properties and Microstructure of Carbon Nanotubes/Magnesiuum Matrix Composite

作　　者：李四年[1] 宋守志[1] 余天庆[2] 陈慧敏[2] 张友寿[2] 沈金龙[2] 

机构地区：[1]东北大学资土学院,沈阳110004 [2]湖北工学院机械工程学院,武汉430068

出　　处：《武汉理工大学学报》2003年第11期1-4,共4页Journal of Wuhan University of Technology

基　　金：武汉市晨光计划 (2 0 0 15 0 0 5 0 30 );湖北省自然科学基金 (2 0 0 2 AB4 9)

摘　　要：以纯镁作基体 ,多壁弯曲碳纳米管 (CNTs)作增强体 ,在氩气保护下 ,采用搅拌铸造的方法制成了碳纳米管增强镁基复合材料 ,对其力学性能进行了测试 ,用 TEM和 EDS方法对碳纳米管涂覆层的界面结构和成分进行分析 ,探讨CNTs与纯镁的复合机理及作用机制。试验结果表明 :CNTs的加入量不高时 ,CNTs对镁基材料具有较好的增强效果 ,复合材料抗拉强度和延伸率可同时得以提高 ,且经过涂覆处理的 CNTs的增强效果更明显。复合材料的抗拉强度比基体最高可提高 15 0 % ,延伸率比基体最高可提高 30 %。With pure Magnesium as matrix and multi-walled bended carbon nanotube as reinforced phase, carbon nanotubes/Magnesium matrix composite was fabricated by the foundry method under Argon gas protection, and its mechanical properties were tested.Furthermore it was analyzed the interface structure and component of plating carbon nanotubes by TEM and EDS, and tried to find out for the composite and the action mechanisms. The experiment results show that the CNTs can function in strengthening the Mg-based composite when the adding quantity of CNTs is not too high.The mechanical properties of nanotube-reinforced Mg-based composite, such as tensile strength and elongation percentage, are greatly heightened. The effects of coating CNTs are better for strengthening. The tensile strength and elongation ratio is higher in maximum 150% and 30% respectively than matrix′s.

关 键 词：碳纳米管 镁基复合材料 微观结构 

分 类 号：TG146.21[一般工业技术—材料科学与工程]