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.

中文翻译：

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直接在铜纳米颗粒上生长的高质量石墨烯，用于铜-石墨烯纳米复合材料

摘要 通过化学气相沉积 (CVD) 在 Cu 纳米粒子 (NPs) 表面直接生长高质量的石墨烯，然后在不同温度下将石墨烯覆盖的 Cu NPs 固结成致密的 Cu-石墨烯纳米复合材料。由于石墨烯的覆盖，Cu NPs 的表面可以很好地防止氧化。在 650 °C 下固结的纳米复合材料 (Cu/G-650) 的硬度为 2.53 GPa，与纯铜相比，电阻率没有明显不同，磨损率降低 2 个数量级，摩擦系数 (COF) 提高 175%据报道，与纯铜相比，铜/G-650 纳米复合材料。石墨烯摩擦膜的形成是为了有效保护铜基体免受磨损。