石墨烯
材料科学
纳米复合材料
纳米颗粒
纳米技术
质量(理念)
认识论
哲学
作者
Shuangyue Wang,Shaobo Han,Guoqing Xin,Jinpei Lin,Ronghua Wei,Jie Lian,Kai Sun,Xiaotao Zu,Qingkai Yu
标识
DOI:10.1016/j.matdes.2017.11.010
摘要
Abstract High-quality graphene was directly grown on the surface of Cu nanoparticles (NPs) via chemical vapor deposition (CVD) and then the graphene-covered Cu NPs were consolidated into dense Cu-graphene nanocomposites at different temperature. The surface of Cu NPs is well protected from oxidation due to the coverage of graphene. Nanocomposite consolidated at 650 °C (Cu/G-650) exhibits a hardness of 2.53 GPa with no distinctive different electrical resistivity compared with pure Cu, 2 orders of magnitude decrease in wear rate and 175% improvement in the coefficient of friction (COF) were reported for the Cu/G-650 nanocomposite as compared with pure Cu. The formation of graphene tribofilm is attributed for the effective protection of the Cu matrix from wear.
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