Effect of graphene content on hardness and conductivity of copper matrix
composites
WANG Shaopeng1，3，WEI Kunxia1，2，3，JIA Feilong1，3，DU Qingbo1，3，WEIWei1，2，3
1School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China; 2Jiangsu
Key Laboratory of Materials Surface Science and Technology, Changzhou 213164, China; 3 Key Laboratory of
Surface Engineering and Advanced Materials for Petroleum and Chemical Industry, Changzhou 213164, China
Abstract：Graphene copper matrix (Gr/Cu) composites were prepared by powder metallurgy, and sodium dodecyl
sulfate (SDS) was used as dispersant to study the influence of graphene content on the microhardness and conductivity
of the composites, so as to determine the optimal content of graphene in copper matrix to obtain high hardness
and high conductivity graphene copper matrix composites. The results show that graphene is evenly distributed
in the composites. After adding graphene, the hardness of copper matrix increases, while the conductivity decreases.
When the content of graphene is 0.5%, the composite has high hardness and good electrical conductivity.
The microhardness is increased by 25% to 57HV0.025, and the conductivity is 84%IACS.
2021, Vol. 31 
