Preparation of graphene/Cu layered composites based on the self-assembly of flake powder

2019 2nd International Conference on Advanced Materials, Intelligent Manufacturing and Automation

Zhang, Dandan^1 ; Jiang, Wei^1 ; Ye, Yusong^1^2 ; Cao, Xia^1 ; Xiao, Huaxing^1

Department of Material Shaping and Control Technology, Changzhou Institute of Technology, Changzhou, Jiangsu

213032, China^1

Department of Materials Science and Engineering, Changzhou University, Changzhou, Jiangsu

213164, China^2

关键词: Electrical conductivity;    Graphene nanoplatelets;    Interfacial bonding strength;    Lateral sizes;    Layered composites;    Metal composites;    Metal matrices;    Microstructure observation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/569/2/022015/pdf
DOI  :  10.1088/1757-899X/569/2/022015

来源: IOP

【 摘 要 】

Graphene with ultrahigh tensile strength and excellent electrical and thermal conductivity has been regarded as a promising reinforcement of metal matrix composites. The key issues for preparation high performance graphene reinforced metal composites are to disperse graphene uniformly, align graphene in the metal matrix and enhance interfacial bonding strength between graphene and metal. In this work, powder metallurgy method based on the self-assembly of flake powder was adopted to prepare graphene nanoplatelets (GNPs)/Cu layered composites. 10 vol.% GNPs sheets with average thickness of 2 nm and average lateral size of 6 μm were used. The microstructure observation shows that GNPs sheets are uniformly distributed and well aligned in the Cu matrix. No obvious voids and cracks are observed at the interface. The addition of fine GNPs leads to ∼31% higher tensile strength and approximately equal electrical conductivity compared to pure Cu.