放电等离子体烧结制备镀钼碳纳米管铜复合材料.pdfVIP

1放电等离子体烧结制备镀钼碳纳米管/铜复合材料 聂俊辉 贾成厂 张亚丰 史 娜 李 一 （1.北京科技大学材料科学与工程学院粉末冶金研究所，北京 100083 ； 2. 中国钢研科技集团，北京 100081 ） 摘 要 对碳纳米管（CNTs ）进行了金属有机化学气相沉积（MOCVD ）镀钼处理，将镀钼CNTs (Mo-CNTs)与铜 粉进行磁力搅拌混合与放电等离子体烧结（SPS）制备了Mo-CNTs/Cu 复合材料。探讨了Mo-CNTs 含量对复合材 料抗拉强度、电导率和热导率的影响。结果表明：Mo-CNTs 含量为1.0 wt.% 时，复合材料抗拉强度最大，较纯Cu 增加了97.0%；基体中添加 Mo-CNTs 使复合材料导电率下降，且1.0 wt.% Mo-CNTs/Cu 复合材料导电率可达纯Cu 的82.1%；复合材料的热导率随Mo-CNTs 含量的增加呈现先增大后减小的趋势。 关键词 碳纳米管 MOCVD 镀钼 铜 SPS Fabrication of Molybdenum-coated Carbon Nanotubes/Copper Composites by Using Spark Plasma Sintering Nie Junhui Jia Chengchang Zhang Yafeng Shi Na Li Yi (1.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083; 2.China Iron Steel Research Institute Group, Beijing, 100081) Abstract Carbon nanotubes (CNTs) were coated by molybdenum layer using metal organic chemical vapor deposition process (MOCVD), and then the Mo-coated CNTs (Mo-CNTs)/Cu composites were prepared by the combination of magnetic stirring (MS) and spark plasma sintering (SPS) processes. The influences of Mo-CNT content on the tensile strength, electrical conductivity and thermal conductivity of composites were investigated. The experimental results show that when the CNT content is 1.0 wt.%, the Mo-CNTs/Cu composite obtains the maximum value of tensile strength, which is increased by 97.0% compared with sintered pure Cu bulk. Moreover, the electrical conductivity of Mo-CNTs/Cu composites decreases with increasing Mo-CNT content. The thermal conductivity of composites firstly increases and then decreases with increasing Mo-CNT cont