Ying Sun et al 2007 Nanotechnology 18 505704 doi:10.1088/0957-4484/18/50/505704
Ying Sun, Jianren Sun, Miao Liu and Quanfang Chen
Show affiliationsCarbon nanotubes (CNTs), including single-walled CNT (SWCNT) and multi-walled CNT (MWCNT), have been regarded as the stiffest and strongest materials ever developed and are promising reinforcement fillers for developing nanocomposites. However, the scientific community has been puzzled about the reinforcement efficiency. Here we report CNT-reinforced nickel nanocomposites fabricated with an innovative electrochemical co-deposition process for achieving good interfacial bonding between CNT and metallic matrices. Test results show that Ni/SWCNT composite produces a tensile strength as high as 2 GPa, which is more than three times stronger than that of pure nickel. The mechanical strength of Ni/CNT nanocomposites is dependent on CNT addition, while the fracture strain remains similar or better than that of pure nickel. The good reinforcement of CNT/metal nanocomposites is attributed to the good interfacial bonding as well as the stiffer matrix nature.
62.25.-g Mechanical properties of nanoscale systems
62.20.M- Structural failure of materials
81.40.Jj Elasticity and anelasticity, stress-strain relations
81.40.Lm Deformation, plasticity, and creep
81.40.Np Fatigue, corrosion fatigue, embrittlement, cracking, fracture, and failure
Issue 50 (19 December 2007)
Received 10 August 2007, in final form 17 October 2007
Published 20 November 2007
Ying Sun et al 2007 Nanotechnology 18 505704
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