Nam Dong Hoon, Kim Jae Hwang, Cha Seung Il, Jung Seung Il, Lee Jong Kook, Park Hoon Mo, Park Hyun Dal, Hong Hyung
J Nanosci Nanotechnol. 2014 Dec;14(12):9134-8. doi: 10.1166/jnn.2014.10084.
Recently, carbon nanotubes (CNTs) have been attracted to reinforcement of composite materials due to their extraordinary mechanical, thermal and electrical properties. Many researchers have attempted to develop CNT reinforced metal composites with various fabrication methods and have shown possibilities for structural and functional applications. Among them, CNT reinforced Al matrix composites have become very attractive due to their huge structural application in industry. In this study, CNT reinforced Al-Cu matrix composites with a microstructure of homogeneous dispersion of CNTs in the Al-Cu matrix are investigated. The CNT/Al-Cu composites are fabricated by mixing of CNT/Cu composite powders and Al powders by high energy ball mill process followed by hot extrusion process. The hardness and wear resistance of the CNT/Al-Cu composites are enhanced by 1.4 and 3 times, respectively, compared to those values for the Al-Cu matrix. This remarkable enhancement mainly originates from the homogeneous dispersion of CNTs in Al-Cu matrix and self-lubricant effect of CNTs.
近年来，碳纳米管（CNTs）因其优异的机械、热和电学性能而被用于增强复合材料。许多研究人员尝试用各种制造方法开发碳纳米管增强金属复合材料，并展示了其在结构和功能应用方面的潜力。其中，碳纳米管增强铝基复合材料因其在工业中的巨大结构应用潜力而备受关注。在本研究中，对具有碳纳米管在铝铜基体中均匀分散微观结构的碳纳米管增强铝铜基复合材料进行了研究。通过高能球磨工艺将碳纳米管/铜复合粉末与铝粉混合，随后进行热挤压工艺来制备碳纳米管/铝铜复合材料。与铝铜基体相比，碳纳米管/铝铜复合材料的硬度和耐磨性分别提高了1.4倍和3倍。这种显著的增强主要源于碳纳米管在铝铜基体中的均匀分散以及碳纳米管的自润滑作用。
