Mo₂C nanoparticles grown on reduced graphene oxide (Mo₂[email protected]) were used to prepare the Mo₂[email protected]/Cu composite. The Mo₂C nanoparticles played a bridging role in not only being firmly attached on RGO but also forming a semi-coherent interface with the Cu matrix, leading to strong interfacial bonding of the composites. The 1 vol% Mo₂[email protected]/Cu composite exhibited a yield strength of 238 MPa, 58% and 127% higher than that of 1 vol% RGO/Cu composite and pure Cu, respectively. The strengthening mechanism of Mo₂[email protected]/Cu composite relied on the dual role of Mo₂C nanoparticles that not only enhanced the load transfer strengthening of RGO but also provided the possible Orowan strengthening themselves. Nevertheless, the Mo₂[email protected]/Cu composite showed a drop in coefficient of thermal expansion but a reduced thermal conductivity compared to pure Cu and the RGO/Cu composite. This study provides new insights into the interface structure, strengthening mechanism and thermal behavior of carbide-modified graphene/metal composites.

在还原的氧化石墨烯上生长的Mo ₂ C纳米颗粒（Mo ₂ [受电子邮件保护]）用于制备Mo ₂ [受电子邮件保护] / Cu复合材料。Mo ₂ C纳米颗粒不仅起到牢固地附着在RGO上的作用，而且还与Cu基体形成半粘合界面，从而起到了桥接作用，从而导致了复合材料的牢固界面结合。1％（体积）的Mo ₂ [受电子邮件保护] / Cu复合材料的屈服强度为238 MPa，分别比1％（体积）的RGO / Cu复合材料和纯Cu的屈服强度高58％和127％。Mo ₂ [受电子邮件保护] / Cu复合材料的强化机制依赖于Mo ₂的双重作用C纳米颗粒不仅增强了RGO的载荷传递强度，而且还提供了可能的Orowan增强自身的能力。然而，与纯Cu和RGO / Cu复合材料相比，Mo ₂ [受电子邮件保护] / Cu复合材料显示出热膨胀系数下降，但导热系数降低。这项研究为碳化物改性石墨烯/金属复合材料的界面结构，强化机理和热行为提供了新的见解。