【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。更多还原

【Abstract】 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 3 wt%RGO obtained by SPS can achieved 87.51%IACS in eletrical conductivity and had a 32.36%improvement in hardness compared with Cu.更多还原