Graphene-reinforced aluminum matrix composites prepared by spark plasma sintering  

作　　者：Wen-ming Tian Song-mei Li Bo Wang Xin Chen Jian-hua Liu Mei Yu 

机构地区：[1]School of Materials Science and Engineering, Beihang University

出　　处：《International Journal of Minerals,Metallurgy and Materials》2016年第6期723-729,共7页矿物冶金与材料学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No. 51271012)

摘　　要：Graphene-reinforced 7055 aluminum alloy composites with different contents of graphene were prepared by spark plasma sintering（SPS）. The structure and mechanical properties of the composites were investigated. Testing results show that the hardness, compressive strength, and yield strength of the composites are improved with the addition of 1wt% graphene. A clean, strong interface is formed between the metal matrix and graphene via metallurgical bonding on atomic scale. Harmful aluminum carbide（Al_4C_3） is not formed during SPS processing. Further addition of graphene（above 1wt%） results in the deterioration in mechanical properties of the composites. The agglomeration of graphene plates is exacerbated with increasing graphene content, which is the main reason for this deterioration.Graphene-reinforced 7055 aluminum alloy composites with different contents of graphene were prepared by spark plasma sintering（SPS）. The structure and mechanical properties of the composites were investigated. Testing results show that the hardness, compressive strength, and yield strength of the composites are improved with the addition of 1wt% graphene. A clean, strong interface is formed between the metal matrix and graphene via metallurgical bonding on atomic scale. Harmful aluminum carbide（Al_4C_3） is not formed during SPS processing. Further addition of graphene（above 1wt%） results in the deterioration in mechanical properties of the composites. The agglomeration of graphene plates is exacerbated with increasing graphene content, which is the main reason for this deterioration.

关 键 词：metal matrix composites spark plasma sintering aluminum graphene mechanical properties 

分 类 号：TF124.5[冶金工程—粉末冶金] TB333[冶金工程—冶金物理化学]