Microstructure and Mechanical Properties of Graphene Oxide/Copper Composites

• Main Authors: HONG Qi-hu, YAN Shao-jiu, YANG Cheng, ZHANG Xiao-yan, DAI Sheng-long
• Format: Article
• Language: zho
• Published: Journal of Materials Engineering 2016-09-01
• Series: Journal of Materials Engineering
• Subjects: graphene oxide/copper composite; vacuum hot press sintering; microstructure; mechanical property
• Online Access: http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.09.001

Graphene oxide/copper (GO/Cu) composites were successfully synthesized through the ball milling and vacuum hot press sintering process. The morphologies of the mixture powders, and the microstructure and mechanical properties of GO/Cu composites were investigated by OM, SEM, XRD, hardness tester and electronic universal testing machine, respectively. The results show that the GO/Cu composites are compact. Graphene oxide with flake morphology is uniformly dispersed and well consolidated with copper matrix. When the mass fraction of graphene oxide is 0.5%, the microhardness and compress strength at RT reach up to 63HV and 276MPa, increased by 8.6% and 28%, respectively. The strengthening mechanism is load transfer effect, dislocation strengthening and fine crystal reinforcing.