镀镍单壁碳纳米管镁基复合材料的微观组织研究  

Effects of Single-walled Carbon Nanotubes with Ni Layers on Microstructure of Magnesium-matrix Composites

作　　者：李维学[1,2] 金辉[1] 戴剑锋[1,2] 王青[1,2] 徐莺歌[1] 

机构地区：[1]兰州理工大学理学院,甘肃兰州730050 [2]甘肃省有色金属新材料重点实验室,甘肃兰州730050

出　　处：《甘肃科学学报》2010年第3期80-83,共4页Journal of Gansu Sciences

基　　金：国家自然科学基金"碳纳米管在聚合物基体中的定向排列"(50873047)

摘　　要：用化学镀法在单壁碳纳米管(SWNTs)外表面包覆Ni-P层,厚度约为20 nm.采用全液态搅拌铸造的方法,制备了镀镍单壁碳纳米管镁基复合材料,随镀镍单壁碳纳米管加入量的增加,复合材料的晶粒尺寸减小,但过多的加入会导致增强体团聚现象严重.观察复合材料的拉伸断口,发现碳纳米管在基体中能起到连接作用和阻碍裂纹行进的作用,提高复合材料的性能.The single-walled carbon nanotubes（SWNTs） with Ni-P coated layers were obtained by an electroless deposition process.A Ni-P layer on individual nanotube with a thickness of 20 nm can be obtained after the deposition process.SWNTs/Mg composite was fabricated by the method of stirring the liquid slurry.With SWNTs increased,the size of grains is decreasing.But when the addition is too much,the conglobation will take place.The connection effect of SWNTs has been revealed during the fracture.CNTs can improve the properties of composites.

关 键 词：碳纳米管 化学镀 镁基复合材料 微观组织 

分 类 号：TB333[一般工业技术—材料科学与工程] TG292[金属学及工艺—铸造]