铺设方式对超顺排碳纳米管增强铜基层状复合材料显微组织和性能的影响（英文）
发布时间：2018-10-30 18:25
【摘要】：采用电沉积工艺制备碳纳米管(CNT)均匀分布但铺设方式不同的超顺排碳纳米管(SACNT)薄膜增强铜基层状复合材料。结果表明,当SACNT膜的体积分数为5.0%且正交铺设时,复合材料的抗拉强度和屈服强度最大可达336.3 MPa和246.0 MPa,相比于同种条件下所制备的纯铜,分别提高了74.0%和124.5%。所制备的复合材料的导电性均大于75%IACS。透射电镜分析结果表明,SACNT的加入能细化基体中铜晶粒的尺寸和孪晶片的厚度,并且正交铺设复合材料中的细化效应比单向铺设复合材料中的更显著。Cu/SACNT复合材料的高强度不仅源于SACNT的增强作用,还与CNT铺设方式导致的铜基体晶粒细化有关。
[Abstract]:Carbon nanotubes (CNTs) (SACNT) thin film reinforced copper laminated composites with uniform distribution of carbon nanotubes (CNT) but different laying methods were prepared by electrodeposition. The results show that when the volume fraction of SACNT film is 5.0% and orthogonal laying, the maximum tensile strength and yield strength of the composite can reach 336.3 MPa and 246.0 MPa, compared with pure copper prepared under the same conditions. They were increased by 74.0% and 124.5%, respectively. The electrical conductivity of the composites is higher than that of 75 IACSs. The results of TEM analysis show that the addition of SACNT can refine the size of copper grains and the thickness of twins in the matrix. The high strength of Cu/SACNT composite is not only due to the reinforcement of SACNT, but also related to the grain refinement of copper matrix caused by CNT paving.
【作者单位】： 清华大学材料学院;清华大学清华-富士康纳米科技研究中心;
【基金】：Project(20111080980) supported by the Initiative Scientific Research Program,Tsinghua University,China Project(2013AA031201) supported by the High Technology Research and Development Program of China
【分类号】：TB333
[Abstract]:Carbon nanotubes (CNTs) (SACNT) thin film reinforced copper laminated composites with uniform distribution of carbon nanotubes (CNT) but different laying methods were prepared by electrodeposition. The results show that when the volume fraction of SACNT film is 5.0% and orthogonal laying, the maximum tensile strength and yield strength of the composite can reach 336.3 MPa and 246.0 MPa, compared with pure copper prepared under the same conditions. They were increased by 74.0% and 124.5%, respectively. The electrical conductivity of the composites is higher than that of 75 IACSs. The results of TEM analysis show that the addition of SACNT can refine the size of copper grains and the thickness of twins in the matrix. The high strength of Cu/SACNT composite is not only due to the reinforcement of SACNT, but also related to the grain refinement of copper matrix caused by CNT paving.
【作者单位】： 清华大学材料学院;清华大学清华-富士康纳米科技研究中心;
【基金】：Project(20111080980) supported by the Initiative Scientific Research Program,Tsinghua University,China Project(2013AA031201) supported by the High Technology Research and Development Program of China
【分类号】：TB333
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