材料科学
微观结构
烧结
复合材料
复合数
极限抗拉强度
碳纳米管
多孔性
微波食品加热
电阻率和电导率
铜
相对密度
延伸率
电导率
冶金
物理化学
化学
工程类
物理
电气工程
量子力学
作者
Bohua Duan,Yu Zhou,Dezhi Wang,Yingrui Zhao
标识
DOI:10.1016/j.jallcom.2018.08.315
摘要
Cu matrix composites reinforced with 0-3 wt% CNTs are fabricated via molecular-level mixing, microwave sintering and rolling technology. A homogeneous distribution of CNTs is exhibited in copper matrix. Clean CNTs/Cu interfaces perform high bonding strength. Electrical conductivity and relative density of microwave sintered CNTs/Cu composites decrease with increase in CNTs content. There exists maximum for hardness of CNTs/Cu composites which rise and then fall with the rise of CNTs content. When CNT contents are less than 1 wt%, it provides a good control over microstructures with low porosity and small pore size. Subsequent rolling process enables better microstructure and performance of sintered composites which shows tensile strength of 218 MPa, the elongation of 37.75%, and the electrical conductivity of >98% IACS compared to pure copper. Our studies provide a robust approach to high-performance CNTs/Cu composites by microwave sintering.
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