石墨烯增强铝基纳米复合材料（Graphene reinforced aluminum matrix nanocomposite）.docVIP

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石墨烯增强铝基纳米复合材料（Graphene reinforced aluminum matrix nanocomposite）.doc

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石墨烯增强铝基纳米复合材料（Graphene reinforced aluminum matrix nanocomposite）

石墨烯增强铝基纳米复合材料（Graphene reinforced aluminum matrix nanocomposite） Graphene nanosheets are two dimensional materials consisting of SP2 hybrid carbon atoms with a single layer of atomic thickness. They exhibit a range of unusual physical properties. In 2004, Novoselov and [1] prepared graphene nanosheets by tape stripping method, and their microstructure and physical properties were characterized. Graphene nanosheets due to its unique two-dimensional structure, physics, chemistry and materials has attracted great interest of scholars, the graphene based research and engineering application of [2] has become a research hotspot in recent years. Graphene is the most tenacious, electrically conductive, and heat - conductive material ever found experimentally. In order to make graphene to the engineering application state as soon as possible, the European Union in 2012 launched flagship project of graphene [3], the United States has invested heavily, and in the application of graphene as a super capacitor has made breakthrough progress in [3]. The preparation of graphene nanosheets by wet chemical reduction is easy, and the obtained graphene has good hydrophilic and monodisperse properties. It is an ideal composite nanomaterial [4]. Because graphene has high strength, its tensile strength can reach 1060GPa, so how to use it to improve the strength of composite has become the focus of research. At present, there are reports about graphene nanosheets reinforced polymer [5] and ceramic material [6]. Fill grahene with 0.7% mass fraction of PVA, the tensile strength increased by 76%[5]; Al2O3 ceramic matrix with graphene nano films with 0.78% volume fraction, the flexural strength increased by 30.75%, while improving the breaking strength of 27.20%[6]. But no reports about graphene nanosheets reinforced metal matrix composites have been reported. Aluminum alloys are widely used in aviation, aerospace and other fields because of their low density, high strength and good ductility