摘要：利用镍纳米粒子修饰石墨烯 (GPLs) 制备石墨烯镍纳米粒子复合物 (Ni-GPLs) ;将复合物作为增强相作用于Cu基体 (NiGPLs-Cu) , 研究其力学性能;采用SEM、TEM、XRD、FT-IR和XPS等对Ni-GPLs进行表征。结果表明:Ni-GPLs由附着在GPLs上且分散均匀的镍纳米颗粒构成, 镍离子通过化学还原在GPLs表面合成Ni-GPLs;含有体积分数为0.8%Ni-GPLs的Ni-GPL-Cu复合材料的极限抗拉强度 (UTS) 显著提高, 比纯Cu的高出42%, 大大提高Ni-GPLs-Cu的力学性能。

关键词：石墨烯纳米片；金属纳米粒子；金属基复合材料；镍纳米颗粒

Abstract：Preparation and mechanical performance of graphene-metal composites were studied using Ni nanoparticles decorated graphene nanoplatelets (Ni-GPLs) as a reinforcing component in Cu matrix (Ni-GPLs-Cu) . SEM, TEM, XRD, FT-IR and XPS were used to characterize Ni-GPLs. The results show that Ni-GPLs consisting of well-dispersed Ni nanoparticles strongly attached on GPLs, are successfully synthesized by chemically reducing Ni ions on the surface of GPLs. The Ni-GPL-Cu composites with only 0.8 vol.% Ni-GPLs exhibite a significant improvement in ultimate tensile strength (UTS) , being 42 % higher than that of monolithic Cu. Ni-GPLs are novel and effective reinforcing components for greatly improving the mechanical properties of the graphene-metal composites.

Keywords：graphene nano-platelets；metal nano-particles；metal matrix composites；nickel nano-particles