还原氧化石墨烯增强铜基复合材料的制备及性能研究

Preparation and properties of reduced graphene oxide reinforced copper matrix composites

借助分子级混合法和均质机剥离共同作用,采用放电等离子体烧结技术(SPS)制备出还原氧化石墨烯/铜基复合材料。利用SEM、XRD、Roman、XPS和压缩测试对其微观组织结构及综合性能进行了研究。结果表明,适量的氧化石墨烯能够均匀分散在铜基中并显著提高复合材料的综合性能。复合材料的压缩屈服强度最高达到481 MPa,比纯铜相应值提升了约2.2倍,维氏硬度较纯铜相应值也提升了约0.7倍。

With the help of molecular-level mixing technology and the exfoliation effect of homogenizer,the reduced graphene oxide/Cu(RGO/Cu)composites were prepared by spark plasma sintering(SPS).The microstructure,mechanical properties of the RGO reinforced copper matrix composites were investigated by SEM,XRD,Roman,XPS and compression tests.The results show that graphene oxide can be uniformly dispersed in Cu-based composites and thus can effectively improve the properties of the composites.The compressive yield strength of the composites is increased from 150 MPa of pure copper to 481 MPa,which is nearly three times as high as that of pure copper,and the HV hardness is increased by about 0.7 times.