喷雾干燥法制备RGO/Cu复合粉体及其复合材料性能研究  

Renforced mechanical properties of reduced graphene oxide/copper composites using spray drying

作　　者：熊轶娜[1,2] 胡柏新[2] 陈小华[2] 许龙山 XIONG Yi-na;HU Bai-xin;CHEN Xiao-hua;XU Long-shan(Changsha Aeronautical Vocational Technical College,Changsha 410124,China;College of Materials Science and Engineering,Hunan University,Changsha 410082,China;College of Materials Science and Engineering,Xiamen University of Technology,Xiamen 361024,China)

机构地区：[1]长沙航空职业技术学院,湖南长沙410124 [2]湖南大学材料科学与工程学院,湖南长沙410082 [3]厦门理工学院材料科学与工程学院,福建厦门361024

出　　处：《化学研究与应用》2019年第4期697-703,共7页Chemical Research and Application

基　　金：国家自然科学基金项目(51272073;51154001)资助;湖南省自然科学基金科教联合项目(2018JJ5059)资助

摘　　要：以铜盐和氧化石墨烯(GO)为原料,采用喷雾干燥-煅烧-还原工艺获得了超细RGO/Cu复合粉体,X射线衍射(XRD)和扫描电镜(SEM)结果表明,复合粉体纯度高,粒径细小,RGO分散均匀。利用快速等离子体烧结工艺(SPS)和模压成型(MP)制备出不同含量RGO/Cu复合材料,对两种样品的微观结构、硬度和导电性能进行研究,结果显示,SPS工艺远优于MP成型烧结工艺,RGO含量为3wt%时,复合材料综合性能最佳。SPS工艺制备样品显微硬度(164.45HV)相比于同工艺下纯铜硬度值提高了32.36%,电导率达87.51%IACS。Reduced graphene oxide(RGO)/Cu ultrafine powders were fabricated by copper salt and graphene oxide(GO)via spraying drying-calcination-hydrogen reduction method.The results of X-ray diffraction(XRD)and scanning electron microscopy show that the powders have high purity,small particle size and RGO homogeneous distribution.The RGO/Cu composites with different content were prepared by mould pressing(MP)and spark plasma sintering(SPS).The microhardness,eletrical conductivity and microstructure of RGO/Cu composites were researched.The results display that SPS was superior to MP,and the composite with 3wt%RGO obtained by SPS can achieved 87.51%IACS in eletrical conductivity and had a 32.36%improvement in hardness compared with Cu.

关 键 词：石墨烯 铜基复合材料 SPS 喷雾干燥 

分 类 号：O614.12[理学—无机化学]