Preparation of super-aligned carbon nanotube-reinforced nickel-matrix laminar composites with excellent mechanical properties

被引:0
作者
Ze-cheng Hou [1 ]
Lun-qiao Xiong [1 ]
Yuan-feng Liu [1 ]
Lin Zhu [2 ]
Wen-zhen Li [1 ]
机构
[1] School of Materials Science and Engineering, Tsinghua University
[2] Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University
关键词
nickel-matrix laminar composite; super-aligned carbon nanotube; electrodeposition; mechanical properties;
D O I
暂无
中图分类号
TB33 [复合材料];
学科分类号
0805 ; 080502 ;
摘要
A homogeneous and compact super-aligned carbon nanotube(SACNT)-reinforced nickel-matrix composite was successfully prepared by electrodeposition. The mechanical properties of the laminar SACNT/Ni composites were substantially improved compared with those of pure nickel. With increasing content of SACNTs, the tensile strength of the composite increased and the elongation decreased because of the high-strength SACNTs bearing part of an applied load and the fine-grained strengthening mechanism. The nanohardness of the SACNT/Ni composites was improved from 3.92 GPa(pure nickel) to 4.62 GPa(Ni-4 vol%SACNTs). The uniform distribution of SACNTs in the composites and strong interfacial bonding between the SACNTs and the nickel matrix resulted in an improvement of the mechanical properties of the SACNT/Ni composites. The introduced SACNTs refined the nickel grains, increased the amount of crystal twins, and changed the preferred orientation of grain growth.
引用
收藏
页码:133 / 141
页数:9
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