Fabrication of RGO/Cu composites based on electrostatic adsorption
(1. Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;
2. Key Laboratory of Advanced Materials of Yunnan Province, Kunming 650093, China;
3. Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK;
4. Hunan Xiangtou Goldsky Technology Group Co., Ltd., Changsha 410012, China)
2. Key Laboratory of Advanced Materials of Yunnan Province, Kunming 650093, China;
3. Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK;
4. Hunan Xiangtou Goldsky Technology Group Co., Ltd., Changsha 410012, China)
Abstract: To address the issues of reduced graphene oxide (RGO) dispersion in copper (Cu) matrix and interface bonding between RGO and Cu, an electrostatic adsorption method with interface transition phase design was employed to prepare the RGO/Cu based composites. Cu-Ti alloy powder was employed to improve the combination by forming carbides at the RGO-Cu interface. It was noted that the mechanical property of 0.3wt.%RGO/Cu-Ti composite was increased by 60% compared with that of the matrix. Strengthening mechanism analysis suggested that the enhancement of the mechanical property was ascribed to the load transfer and second phase strengthening which were from the improved dispersion of RGO and the in-situ formed titanium carbide phase.
Key words: graphene oxide (GO); electrostatic adsorption; Cu-Ti; in-situ TixCy; mechanical property